UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
 
FORM 10-Q
 
(Mark One)
xQUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended June 30, 2018March 31, 2019
OR 
oTRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from_____ to _____         
Commission File Number: 001-37557
 
Penumbra, Inc.
(Exact name of registrant as specified in its charter)
 
Delaware 05-0605598
(State or other jurisdiction of
incorporation or organization)
 
(I.R.S. Employer
Identification No.)
One Penumbra Place
Alameda, CA
 94502
(Address of principal executive offices) (Zip code)

(510) 748-3200
(Registrant’s telephone number, including area code)
 
Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes: x    No:  o
Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes:  x    No:  o
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.
Large accelerated filerx Accelerated filero
Non-accelerated filero(Do not check if a smaller reporting company)Smaller reporting companyo
Emerging growth companyo   
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with accounting standards provided pursuant to Section 13(a) of the Exchange Act. o 
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes:  o  No:  x
As of July 24, 2018,April 23, 2019, the registrant had 34,379,35434,737,497 shares of common stock, par value $0.001 per share, outstanding.
 

Penumbra, Inc.
FORM 10-Q
TABLE OF CONTENTS
 
  Page
 
 
 
 
   
   
 

PART I - FINANCIAL INFORMATION

ITEM 1. CONDENSED CONSOLIDATED FINANCIAL STATEMENTS.

Penumbra, Inc.
Condensed Consolidated Balance Sheets
(unaudited)
(in thousands)
 June 30,
2018
 December 31,
2017
 March 31,
2019
 December 31,
2018
Assets        
Current assets:        
Cash and cash equivalents $59,705
 $50,637
 $95,606
 $67,850
Marketable investments 147,185
 163,954
 99,241
 133,039
Accounts receivable, net of doubtful accounts of $1,571 and $1,290 at June 30, 2018 and December 31, 2017, respectively 74,059
 58,007
Accounts receivable, net of doubtful accounts of $2,877 and $2,782 at March 31, 2019 and December 31, 2018, respectively 94,679
 81,896
Inventories 97,556
 94,901
 121,691
 115,741
Prepaid expenses and other current assets 13,994
 14,735
 11,869
 12,200
Total current assets 392,499
 382,234
 423,086
 410,726
Property and equipment, net 33,719
 30,899
 35,380
 35,407
Operating lease right-of-use assets 42,376
 
Intangible assets, net 27,344
 23,778
 26,813
 27,245
Goodwill 7,977
 8,178
 7,659
 7,813
Long-term investments (Note 3) 2,597
 3,872
Deferred taxes 34,129
 26,690
 31,862
 32,940
Other non-current assets 1,049
 1,016
 1,613
 875
Total assets $499,314
 $476,667
 $568,789
 $515,006
Liabilities and Stockholders’ Equity        
Current liabilities:        
Accounts payable $7,432
 $6,757
 $7,692
 $8,176
Accrued liabilities 42,255
 44,825
 58,032
 57,886
Current operating lease liabilities 3,688
 
Total current liabilities 49,687
 51,582
 69,412
 66,062
Deferred rent 7,430
 6,199
 
 7,586
Non-current operating lease liabilities 46,070
 
Other non-current liabilities 16,998
 18,478
 16,644
 18,943
Total liabilities 74,115
 76,259
 132,126
 92,591
Commitments and contingencies (Note 8) 

 

Commitments and contingencies (Note 9) 

 

Stockholders’ equity:        
Common stock 34
 33
 34
 34
Additional paid-in capital 404,493
 396,810
 419,514
 415,084
Accumulated other comprehensive (loss) income (661) 1,569
Accumulated other comprehensive loss (2,578) (1,942)
Retained earnings 21,333
 1,996
 19,762
 9,064
Total Penumbra, Inc. stockholders’ equity 436,732
 422,240
Non-controlling interest (69) 175
Total stockholders’ equity 425,199
 400,408
 436,663
 422,415
Total liabilities and stockholders’ equity $499,314
 $476,667
 $568,789
 $515,006
See accompanying notes to the unaudited condensed consolidated financial statements

Penumbra, Inc.
Condensed Consolidated Statements of Operations and Comprehensive Income (Loss)
(unaudited)
(in thousands, except share and per share amounts)
  Three Months Ended June 30, Six Months Ended June 30,
  2018 2017 2018 2017
Revenue $109,638
 $80,589
 $212,339
 $153,802
Cost of revenue 37,386
 29,660
 73,530
 55,164
Gross profit 72,252
 50,929
 138,809
 98,638
Operating expenses:        
Research and development 8,193
 8,094
 16,206
 15,128
Sales, general and administrative 54,776
 44,163
 109,275
 86,884
Total operating expenses 62,969
 52,257
 125,481
 102,012
Income (loss) from operations 9,283
 (1,328) 13,328
 (3,374)
Interest income, net 720
 624
 1,469
 1,268
Other expense, net (340) (214) (630) (563)
Income (loss) before income taxes and equity in losses of unconsolidated investee 9,663
 (918) 14,167
 (2,669)
(Benefit from) provision for income taxes (4,948) 482
 (6,886) 1,837
Income (loss) before equity in losses of unconsolidated investee 14,611
 (1,400) 21,053
 (4,506)
Equity in losses of unconsolidated investee (1,230) (158) (2,181) (158)
Net income (loss) 13,381
 (1,558) 18,872
 (4,664)
Other comprehensive (loss) income, net of tax:        
Foreign currency translation adjustments, net of tax (3,400) (766) (2,014) (74)
Net change in unrealized (losses) gains on available-for-sale securities, net of tax 102
 (3) (216) 67
Total other comprehensive loss, net of tax (3,298) (769) (2,230) (7)
Comprehensive income (loss) $10,083
 $(2,327) $16,642
 $(4,671)
Net income (loss) $13,381
 $(1,558) $18,872
 $(4,664)
Net income (loss) per share:        
Basic $0.39
 $(0.05) $0.56
 $(0.14)
Diluted $0.37
 $(0.05) $0.52
 $(0.14)
Weighted average shares used to compute net income (loss) per share:        
Basic 34,072,223
 33,219,487
 33,959,997
 32,420,105
Diluted 36,116,254
 33,219,487
 36,030,304
 32,420,105
  Three Months Ended March 31,
  2019 2018
Revenue $128,439
 $102,701
Cost of revenue 44,529
 36,144
Gross profit 83,910
 66,557
Operating expenses:    
Research and development 11,667
 8,013
Sales, general and administrative 61,091
 54,499
Total operating expenses 72,758
 62,512
Income from operations 11,152
 4,045
Interest income, net 733
 749
Other income (expense), net 24
 (290)
Income before income taxes and equity in losses of unconsolidated investee 11,909
 4,504
Provision for (benefit from) income taxes 1,455
 (1,938)
Income before equity in losses of unconsolidated investee 10,454
 6,442
Equity in losses of unconsolidated investee 
 (951)
Consolidated net income $10,454
 $5,491
Net loss attributable to non-controlling interest (244) 
Net income attributable to Penumbra, Inc. $10,698
 $5,491
     
Net income attributable to Penumbra, Inc. per share:    
Basic $0.31
 $0.16
Diluted $0.30
 $0.15
Weighted average shares outstanding:    
Basic 34,507,279
 33,846,142
Diluted 36,213,164
 35,917,051
See accompanying notes to the unaudited condensed consolidated financial statements

Penumbra, Inc.
Condensed Consolidated Statements of Comprehensive Income
(unaudited)
(in thousands)
  Three Months Ended March 31,
  2019 2018
Consolidated net income $10,454
 $5,491
Other comprehensive (loss) income, net of tax:    
Foreign currency translation adjustments, net of tax (1,098) 1,386
Net change in unrealized gains (losses) on available-for-sale securities, net of tax 462
 (318)
Total other comprehensive (loss) income, net of tax (636) 1,068
Consolidated comprehensive income $9,818
 $6,559
Net loss attributable to non-controlling interest (244) 
Comprehensive income attributable to Penumbra, Inc. $10,062
 $6,559
See accompanying notes to the unaudited condensed consolidated financial statements

Penumbra, Inc.
Condensed Consolidated Statements of Stockholders’ Equity
(unaudited)
(in thousands, except share amounts)
  Common Stock Additional Paid-in Capital Accumulated Other Comprehensive Loss Retained Earnings Total Penumbra, Inc. Stockholders’ Equity Non-Controlling Interest Total Stockholders’ Equity
  Shares Amount      
Balance at December 31, 2018 34,437,339
 $34
 $415,084
 $(1,942) $9,064
 $422,240
 $175
 $422,415
Issuance of common stock 140,598
 
 1,071
 
 
 1,071
 
 1,071
Shares held for tax withholdings (14,284) 
 (2,098) 
 
 (2,098) 
 (2,098)
Stock-based compensation 
 
 5,457
 
 
 5,457
 
 5,457
Other comprehensive loss 
 
 
 (636) 
 (636) 
 (636)
Net income 
 
 
 
 10,698
 10,698
 (244) 10,454
Balance at March 31, 2019 34,563,653
 $34
 $419,514
 $(2,578) $19,762
 $436,732
 $(69) $436,663
  Common Stock Additional Paid-in Capital Accumulated Other Comprehensive Income Retained Earnings Total Penumbra, Inc. Stockholders’ Equity Non-Controlling Interest Total Stockholders’ Equity
  Shares Amount      
Balance at December 31, 2017 33,685,146
 $33
 $396,810
 $1,569
 $1,996
 $400,408
 $
 $400,408
Issuance of common stock 232,943
 1
 1,328
 
 
 1,329
 
 1,329
Issuance of common stock pursuant to royalty buy-out 53,256
 
 5,256
 
 
 5,256
 
 5,256
Shares held for tax withholdings (38,677) 
 (3,530) 
 
 (3,530) 
 (3,530)
Stock-based compensation 
 
 4,435
 
 
 4,435
 
 4,435
Cumulative effect adjustments(1)
 
 
 
 
 464
 464
 
 464
Other comprehensive income 
 
 
 1,068
 
 1,068
 
 1,068
Net income 
 
 
 
 5,491
 5,491
 
 5,491
Balance at March 31, 2018 33,932,668
 $34
 $404,299
 $2,637
 $7,951
 $414,921
 $
 $414,921
(1) Cumulative effect adjustments relate to the adoption of Accounting Standard Update (“ASU”) No. 2014-09 - Revenue from Contracts with Customers (“Topic 606”), ASU No. 2016-16 - Income Taxes (“Topic 740”), and ASU No. 2018-02 - Income Statement - Reporting Comprehensive Income (“Topic 220”).
See accompanying notes to the unaudited condensed consolidated financial statements

Penumbra, Inc.
Condensed Consolidated Statements of Cash Flows
(unaudited)
(in thousands)
 Six Months Ended June 30, Three Months Ended March 31,
 2018 2017 2019 2018
CASH FLOWS FROM OPERATING ACTIVITIES:        
Net income (loss) $18,872
 $(4,664)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:    
Net income $10,454
 $5,491
Adjustments to reconcile consolidated net income to net cash (used in) provided by operating activities:    
Depreciation and amortization 2,948
 1,422
 1,804
 1,399
Amortization of premium on marketable investments 
 436
Stock-based compensation 9,139
 8,605
 5,095
 4,154
Loss on non-marketable equity investments 2,181
 158
 
 951
Inventory write-downs 670
 440
 658
 300
Deferred taxes (7,514) 
 1,078
 (2,209)
Change in fair value of contingent consideration 725
 
 
 442
Other 388
 209
 396
 389
Changes in operating assets and liabilities:        
Accounts receivable (16,297) (4,551) (13,373) (6,109)
Inventories (3,948) (6,827) (6,728) 208
Prepaid expenses and other current and non-current assets 1,405
 2,903
 45
 2,986
Accounts payable 625
 293
 (1,503) 622
Accrued expenses and other non-current liabilities 1,638
 4,420
 6
 2,084
Net cash provided by operating activities 10,832
 2,844
Net cash (used in) provided by operating activities (2,068) 10,708
CASH FLOWS FROM INVESTING ACTIVITIES: 

   

  
Contributions to non-marketable investments (868) (5,074) 
 (352)
Purchase of marketable investments (61,495) (90,384)
Purchases of marketable investments 
 (42,552)
Proceeds from sales of marketable investments 236
 28,167
 1,018
 
Proceeds from maturities of marketable investments 77,869
 35,669
 33,300
 43,540
Purchases of property and equipment (5,105) (5,364) (2,463) (2,823)
Deposit payments for acquisition 
 (454)
Net cash provided by (used in) investing activities 10,637
 (37,440) 31,855
 (2,187)
CASH FLOWS FROM FINANCING ACTIVITIES:        
Proceeds from issuance of common stock upon underwritten public offering, net of issuance cost 
 106,265
Proceeds from exercises of stock options 3,171
 2,625
 1,071
 1,328
Proceeds from issuance of stock under employee stock purchase plan 3,584
 2,914
Payment of employee taxes related to vested restricted stock (13,845) (9,190)
Payment of employee taxes related to vested common and restricted stock (2,098) (3,530)
Payment of acquisition-related obligations (4,431) 
 (683) (4,323)
Other (415) 
 
 (219)
Net cash (used in) provided by financing activities (11,936) 102,614
Net cash used in financing activities (1,710) (6,744)
Effect of foreign exchange rate changes on cash and cash equivalents (465) (2,859) (321) 391
Net Increase in Cash and Cash Equivalents and Restricted Cash 9,068
 65,159
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH—Beginning of period 50,637
 13,236
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH—End of period $59,705
 $78,395
NET INCREASE IN CASH AND CASH EQUIVALENTS 27,756
 2,168
CASH AND CASH EQUIVALENTS—Beginning of period 67,850
 50,637
CASH AND CASH EQUIVALENTS—End of period $95,606
 $52,805
NONCASH INVESTING AND FINANCING ACTIVITIES:        
Common shares issued as consideration in connection with a buyout agreement (Notes 6, 8 and 9) $5,256
 $
Common shares issued as consideration in connection with a buyout agreement (Notes 9 and 10) $
 $5,256
Purchase of property and equipment funded through accounts payable and accrued liabilities $1,126
 $411
 $860
 $427
RECONCILIATION OF CASH AND CASH EQUIVALENTS AND RESTRICTED CASH:    
Cash and cash equivalents $59,705
 $76,576
Restricted cash $
 $1,819
Total cash and cash equivalent and restricted cash - End of period $59,705
 $78,395
See accompanying notes to the unaudited condensed consolidated financial statements

Penumbra, Inc.
Notes to Condensed Consolidated Financial Statements
(unaudited)
1. Organization and Description of Business
Penumbra, Inc. (the “Company”) is a global healthcare company focused on innovative therapies. The Company designs, develops, manufactures and markets medical devices and has a broad portfolio of products that addresses challenging medical conditions and significant clinical needs.
2. Summary of Significant Accounting Policies
Basis of Presentation and Consolidation
The accompanying condensed consolidated balance sheet as of June 30, 2018,March 31, 2019, the condensed consolidated statements of operations and comprehensive income (loss) for the three and six months ended June 30,March 31, 2019 and 2018, the condensed consolidated statements of comprehensive income for the three months ended March 31, 2019 and 2017,2018, the condensed consolidated statements of stockholders’ equity for the three months ended March 31, 2019 and 2018, and the condensed consolidated statements of cash flows for the sixthree months ended June 30,March 31, 2019 and 2018 and 2017 are unaudited. The unaudited condensed consolidated financial statements included herein have been prepared by the Company in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and the applicable rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”) for interim financial information. Accordingly, they do not include all of the information and notes required by U.S. GAAP for complete financial statements. The condensed consolidated balance sheet as of December 31, 20172018 was derived from the audited financial statements as of that date.
The unaudited condensed consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements and, in the opinion of management, reflect all adjustments of a normal recurring nature considered necessary to state fairly the Company’s financial position as of June 30, 2018,March 31, 2019, the results of its operations for the three and six months ended June 30,March 31, 2019 and 2018, the changes in stockholders’ equity for the three months ended March 31, 2019 and 2017,2018, and the cash flows for the sixthree months ended June 30, 2018March 31, 2019 and 2017.2018. The results for the three and six months ended June 30, 2018March 31, 2019 are not necessarily indicative of the results that may be expected for the year ending December 31, 20182019 or for any other future annual or interim period.Certain changes in presentation were made in the condensed consolidated financial statements for the three and six months ended June 30, 2017 to conform to the presentation for the three and six months ended June 30, 2018, including the retrospective application of the Accounting Standards Update (“ASU”) 2016-18 as discussed further below.
The information included in this Quarterly Report on Form 10-Q should be read in conjunction with the audited consolidated financial statements and notes thereto for the year ended December 31, 2017,2018, included in the Company’s Annual Report on Form 10-K. There have been no changes to the Company’s significant accounting policies during the sixthree months ended June 30, 2018,March 31, 2019, as compared to the significant accounting policies described in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2017,2018, other than changes to the Company’s revenueleasing policy described below in connection with the adoption of the guidance under the Accounting Standards Codification (“ASC”) 606.842.
The condensed consolidated financial statements include the accounts of the Company, its wholly-owned subsidiaries and its wholly-owned subsidiaries.majority-owned subsidiary. The portion of equity not attributable to the Company is considered non-controlling interest and is classified separately in the condensed consolidated financial statements. Any subsequent changes in the Company’s ownership interest while the Company retains its controlling interest in its majority-owned subsidiary will be accounted for as equity transactions. All intercompany accountsbalances and transactions have been eliminated.eliminated in consolidation.
Use of Estimates
The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities and equity accounts; disclosure of contingent assets and liabilities at the date of the financial statements; and the reported amounts of revenues and expenses during the reporting period. On an ongoing basis, the Company evaluates its estimates, including those related to marketable investments, provisions for doubtful accounts, the amount of variable consideration included in the transaction price, warranty reserve, valuation of inventories, useful lives of property and equipment, operating lease right-of-use (“ROU”) assets and liabilities, income taxes, contingent consideration and other contingencies, among others. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other data. Actual results could differ from those estimates.
Revenue Recognition
Revenue is comprised of product revenue net of returns, discounts, administration fees and sales rebates. The Company adopted the guidance under ASC 606 on January 1, 2018 using the modified retrospective method for all contracts not completed as of the date of adoption. Therefore, the comparative prior year information has not been adjusted and continues to be reported under ASC 605 with the impact of the adoption reflected in opening retained earnings. Under ASC 606, the Company recognizes revenue when control of the promised goods or services is transferred to our customers, in an amount that


5
7

Table of Contents
Penumbra, Inc.
Notes to Condensed Consolidated Financial Statements
(unaudited)

Recently Adopted Accounting Standards
reflectsOn January 1, 2019, the consideration we expectCompany adopted Accounting Standard Update (“ASU”) No. 2016-02, Leases (Topic 842), and its associated amendments using the modified retrospective transition approach by applying the new standard to be entitled to in exchange for those goods or services. Revenue from product sales continue to be recognized either onall leases existing at the date of shipmentinitial application and not restating comparative periods. There was no cumulative-effect adjustment recorded to retained earnings upon adoption. Under the standard, a lessee is required to recognize a lease liability and ROU asset for all leases. The new guidance also modified the classification criteria and requires additional disclosures to enable users of financial statements to understand the amount, timing, and uncertainty of cash flows arising from leases. Consistent with current guidance, a lessee’s recognition, measurement, and presentation of expenses and cash flows arising from a lease continues to depend primarily on its classification. The Company elected the package of practical expedients permitted under the transition guidance, which allowed the Company to carryforward its historical lease classification, its assessment on whether a contract was or contains a lease, and its initial direct costs for any leases that existed prior to January 1, 2019. In addition, the Company elected the following transitional practical expedients: (1) the short-term lease exception and (2) to not separate its non-lease components for its real estate, vehicle and equipment leases. The impact of adoption and additional disclosures required by the ASU have been included in “Significant Accounting Policies - Leases” below and in Note “8. Leases.”
Significant Accounting Policies - Leases
The Company adopted the guidance under ASC 842 on January 1, 2019 using the modified retrospective transition approach. There was no cumulative-effect adjustment recorded to retained earnings upon adoption.
Under ASC 842, the Company determines if an arrangement is a lease at inception. In addition, the Company determines whether leases meet the classification criteria of a finance or operating lease at the lease commencement date considering: (1) whether the lease transfers ownership of the underlying asset to the lessee at the end of the lease term, (2) whether the lease contains a bargain purchase option, (3) whether the lease term is for a major part of the remaining economic life of the underlying asset, (4) whether the present value of the sum of the lease payments and residual value guaranteed by the lessee equals or exceeds substantially all of the fair value of the underlying asset, and (5) whether the underlying asset is of such a specialized nature that it is expected to have no alternative use to the lessor at the end of the lease term. As of March 31, 2019, the Company's contracts that contained a lease consisted of real estate, equipment and vehicle leases. As of the date of receipt byadoption of ASC 842 and March 31, 2019, the customer, butCompany did not have material finance leases.
Operating leases are included in operating lease right-of-use assets, current operating lease liabilities, and non-current operating lease liabilities in our condensed consolidated balance sheet. ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. In determining the present value of lease payments, the Company uses its incremental borrowing rate based on the information available at the lease commencement date if the rate implicit in the lease is deferrednot readily determinable. The determination of the Company’s incremental borrowing rate requires management judgment including, the development of a synthetic credit rating and cost of debt as the Company currently does not carry any debt. The operating lease ROU assets also include adjustments for certain transactionsprepayments, accrued lease payments and exclude lease incentives. The Company’s lease terms may include options to extend or terminate the lease when control has not yet transferred. However, with respect to productsit is reasonably certain that the Company consigns to hospitals, which primarily consist of coils, the Company recognizes revenue at the time hospitals utilize products inwill exercise such options. Operating lease cost is recognized on a procedure.
Deferred revenue represents amounts that the Company has already invoiced its customers and that are ultimately expected to be recognized as revenue, but for which not all revenue recognition criteria have been met. As of June 30, 2018 and December 31, 2017, respectively, the Company's deferred revenue balance was not material.
Revenue is recorded at the net sales price, which includes estimates of variable consideration such as product returns utilizing historical return rates, rebates, discounts, and other adjustments to net revenue. To the extent the transaction price includes variable consideration, the Company estimates the amount of variable consideration that should be included in the transaction price. Variable consideration is included in revenue only to the extent that it is probable that a significant reversal of the revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved.
The Company’s terms and conditions permit product returns and exchanges. The Company bases its estimates for sales returns on actual historical returnsstraight-line basis over the prior three yearsexpected lease term. Lease agreements entered into after the adoption of ASC 842 that include lease and theynon-lease components are accounted for as a single lease component. Lease agreements with a noncancelable term of less than 12 months are not recorded as reductions in revenue aton the time of sale. Upon recognition, the Company reduces revenue and cost of revenue for the estimated return. Return rates can fluctuate over time, but are sufficiently predictable to allow the Company to estimate expected future product returns.
Company’s condensed consolidated balance sheet. For more information about the impact of adoption and disclosures on the Company’s revenue,leases, refer to Note “13. Revenues.8. Leases.
Segments
The Company determined its operating segment on the same basis that it uses to evaluate its performance internally. The Company has one business activity: the design, development, manufacturing and marketing of innovative devices, and operates as one operating segment. The Company’s chief operating decision-maker, its Chief Executive Officer, reviews its consolidated operating results for the purpose of allocating resources and evaluating financial performance. The Company assigns revenue to a geographic area based on the destination to which it ships its products.
Recent Accounting Guidance
Recently Adopted Accounting Standards
In the first quarter of 2018, the Company adopted ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), and its associated amendments. Under the standard, revenue is recognized when a customer obtains control of promised goods or services in an amount that reflects the consideration the entity expects to receive in exchange for those goods or services. In addition, the standard requires disclosure of the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. The Company applied the five step method outlined in the ASU to all revenue streams and elected to utilize the modified retrospective implementation method. The additional disclosures required by the ASU have been included in Note “13. Revenues.”
In the first quarter of 2018, the Company adopted ASU No. 2016-18, Statement of Cash Flows: Restricted Cash, a consensus of the Financial Accounting Standards Board (“FASB”) Emerging Issues Task Force. Under the standard, restricted cash and restricted cash equivalent amounts are presented within cash and cash equivalents when reconciling the total beginning and ending amounts shown on the statement of cash flows. When cash, cash equivalents, restricted cash and restricted cash equivalents are presented in more than one line item on the balance sheet, a reconciliation of the totals in the statement of cash flows to the related captions in the balance sheet is required. The impact of the adoption of ASU No. 2016-18 resulted in an increase in the ending cash and cash equivalents of $1.8 million in the statement of cash flows for the six months ended June 30, 2017, with a corresponding $1.7 million change in cash used in investing activities and the remaining change impacted the effect of foreign exchange rates on cash and cash equivalents.
In the first quarter of 2018, the Company adopted ASU No. 2017-09, Compensation - Stock Compensation - Scope of Modification Accounting. The standard provides clarification on when modification accounting should be used for changes to the terms or conditions of a share-based payment award. This standard does not change the accounting for modifications but clarifies that modification accounting guidance should only be applied if there is a change to the value, vesting conditions, or award classification and would not be required if the changes are considered non-substantive. The standard is effective for annual periods beginning after December 15, 2017, and interim periods within those annual periods. The guidance was adopted on a prospective basis in the first quarter of 2018 and did not have any impact upon adoption.

68

Table of Contents
Penumbra, Inc.
Notes to Condensed Consolidated Financial Statements
(unaudited)

In the first quarter of 2018, the Company adopted ASU No. 2018-02, Income Statement - Reporting Comprehensive Income. The standard allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act of 2017 (the “Tax Reform Act”). The standard is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted for any interim and annual financial statements that have not yet been issued. The Company elected to early adopt this standard on a prospective basis in the first quarter of 2018 and reclassify the stranded tax effects resulting from the Tax Reform Act from accumulated other comprehensive income to retained earnings. There were no additional income tax effects resulting from the Tax Reform Act reclassified from accumulated comprehensive income to retained earnings. The adoption did not have a material impact on the Company’s financial position.
In the first quarter of 2018, the Company adopted ASU No. 2018-05, Income Taxes (Topic 740): Amendments to SEC Paragraphs Pursuant to SEC StaffRecent Accounting Bulletin No. 118, which included amendments to expand income tax accounting and disclosure guidance pursuant to SEC Staff Accounting Bulletin No. 118 (“SAB 118”) issued by the SEC in December 2017. SAB 118 provides guidance on accounting for the income tax effects of the Tax Reform Act. Refer to Note “11. Income Taxes” for more information and disclosures related to this amended guidance.

Guidance
Recently Issued Accounting Standards
In February 2016, the FASB issued ASU No. 2016-02, Leases, which amends the existing accounting standards for leases. In September 2017, the FASB issued ASU No. 2017-13 which provides additional clarification and implementation guidance on the previously issued ASU No. 2016-02. Under the new guidance, a lessee will be required to recognize a lease liability and right-of-use asset for all leases with terms in excess of twelve months. The new guidance also modifies the classification criteria and accounting for sales-type and direct financing leases, and requires additional disclosures to enable users of financial statements to understand the amount, timing, and uncertainty of cash flows arising from leases. Consistent with current guidance, a lessee’s recognition, measurement, and presentation of expenses and cash flows arising from a lease will continue to depend primarily on its classification. In July 2018, the FASB issued ASU No. 2018-10 and ASU No. 2018-11, which further clarifies the application of the guidance issued under ASU No. 2016-02 and provides updates to transition methods and practical expedients. ASU No. 2018-11 provides an optional transition method in addition to the existing transition method which allows entities, at the adoption date, to recognize a cumulative effect adjustment to the opening balance of retained earnings in the period of adoption. The accounting standard is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years, and must be applied using a modified retrospective approach. Early adoption is permitted. While the Company is continuing to assess all potential impacts of the standard, it expects that most of its lease commitments will be subject to the updated standard and recognized as lease liabilities and right-of-use assets upon adoption.
In June 2016, the FASBFinancial Accounting Standards Board (“FASB”) issued ASU No. 2016-13, Financial Instruments-Credit Losses. The standard changes how entities will measure credit losses for most financial assets and certain other instruments that are not measured at fair value through net income. The Company will recognize an allowance for credit losses on available-for-sale securities rather than deductions in amortized cost. In April 2019, the FASB issued ASU No. 2019-04 which provides additional clarification and address stakeholders’ specific issues about certain aspects of the amendments in the previously issued ASU No. 2016-13.The standard is effective for fiscal years and interim periods beginning after December 15, 2019. Early adoption is permitted for all periods beginning after December 15, 2018. The Company is currently evaluating the impact of adopting this standard.
In JuneAugust 2018, the FASB issued ASU No. 2018-07, Compensation – Stock Compensation (Topic 718): Improvements2018-13, Disclosure Framework—Changes to Nonemployee Share-Based Payment Accounting, which simplifies the accounting and reportingDisclosure Requirements for share-based payments granted to nonemployees for goods and servicesFair Value Measurement. UnderThe primary focus of the new guidance, paymentsstandard is to nonemployees would be more closely aligned withimprove the effectiveness of the disclosure requirements for share-based payments granted to employees.fair value measurements. The standard is effective for fiscal years and interim periods beginning after December 15, 2018.2019. As the Company adopted ASC 606 in the first quarter of 2018, the CompanyAn entity is permitted to early adopt thisthe removed or modified disclosures upon the issuance of the standard. and may delay adoption of the additional disclosures until their effective date. The Company does not anticipateis currently evaluating the adoptionimpact of adopting this standard to have a material impact on its financial statements.standard.
3. Investments and Fair Value of Financial Instruments
Marketable Investments
The Company’s marketable investments have been classified and accounted for as available-for-sale. The following table presents the Company’s marketable investments as of June 30, 2018March 31, 2019 and December 31, 2017 were as follows2018 (in thousands):
  March 31, 2019
  Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value
Commercial paper $1,500
 $
 $
 $1,500
U.S. treasury 2,400
 
 (9) 2,391
U.S. agency and government sponsored securities 7,708
 21
 (14) 7,715
U.S. states and municipalities 3,631
 1
 
 3,632
Corporate bonds 84,039
 94
 (130) 84,003
Total $99,278
 $116
 $(153) $99,241
  December 31, 2018
  Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value
Commercial paper $13,701
 $
 $(3) $13,698
U.S. treasury 6,400
 
 (22) 6,378
U.S. agency and government sponsored securities 7,699
 18
 (27) 7,690
U.S. states and municipalities 5,134
 
 (12) 5,122
Corporate bonds 100,606
 14
 (469) 100,151
Total $133,540
 $32
 $(533) $133,039

79

Table of Contents
Penumbra, Inc.
Notes to Condensed Consolidated Financial Statements
(unaudited)

  June 30, 2018
  Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value
Commercial paper $13,707
 $
 $(2) $13,705
U.S. treasury 6,401
 
 (43) 6,358
U.S. agency and government sponsored securities 6,217
 
 (35) 6,182
U.S. states and municipalities 11,465
 
 (21) 11,444
Corporate bonds 109,985
 31
 (520) 109,496
Total $147,775
 $31
 $(621) $147,185
  December 31, 2017
  Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value
Commercial paper $19,941
 $
 $(8) $19,933
U.S. treasury 6,402
 
 (28) 6,374
U.S. agency and government sponsored securities 4,787
 
 (18) 4,769
U.S. states and municipalities 12,510
 
 (23) 12,487
Corporate bonds 120,648
 23
 (280) 120,391
Total $164,288
 $23
 $(357) $163,954
The following tables present the gross unrealized losses and the fair value for those marketable investments that were in an unrealized loss position for less than twelve months or for twelve months or longermore as of June 30, 2018March 31, 2019 and December 31, 20172018 (in thousands):
 June 30, 2018 March 31, 2019
 Less than 12 months 12 months or more Total Less than 12 months 12 months or more Total
 Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses
Commercial paper $9,717
 $(2) $
 $
 $9,717
 $(2)
U.S. treasury 6,359
 (43) 
 
 6,359
 (43) $
 $
 $2,391
 $(9) $2,391
 $(9)
U.S. agency and government sponsored securities 4,183
 (33) 1,998
 (2) 6,181
 (35) 
 
 4,211
 (14) 4,211
 (14)
U.S. states and municipalities 8,444
 (21) 
 
 8,444
 (21)
Corporate bonds 74,101
 (395) 9,421
 (125) 83,522
 (520) 8,307
 (6) 31,435
 (124) 39,742
 (130)
Total $102,804
 $(494) $11,419
 $(127) $114,223
 $(621) $8,307
 $(6) $38,037
 $(147) $46,344
 $(153)
  December 31, 2017
  Less than 12 months 12 months or more Total
  Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses
Commercial paper $19,933
 $(8) $
 $
 $19,933
 $(8)
U.S. treasury 6,374
 (28) 
 
 6,374
 (28)
U.S. agency and government sponsored securities 2,778
 (9) 1,991
 (9) 4,769
 (18)
U.S. states and municipalities 10,092
 (23) 
 
 10,092
 (23)
Corporate bonds 93,284
 (188) 10,201
 (92) 103,485
 (280)
Total $132,461
 $(256) $12,192
 $(101) $144,653
 $(357)

8

Table of Contents
Penumbra, Inc.
Notes to Condensed Consolidated Financial Statements
(unaudited)

  December 31, 2018
  Less than 12 months 12 months or more Total
  Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses
Commercial paper $12,208
 $(3) $
 $
 $12,208
 $(3)
U.S. treasury 
 
 6,378
 (22) 6,378
 (22)
U.S. agency and government sponsored securities 1,436
 (5) 2,759
 (22) 4,195
 (27)
U.S. states and municipalities 1,529
 (5) 3,593
 (7) 5,122
 (12)
Corporate bonds 58,961
 (176) 33,215
 (293) 92,176
 (469)
Total $74,134
 $(189) $45,945
 $(344) $120,079
 $(533)
The following table presents the contractual maturities of the Company’s marketable investments as of June 30, 2018March 31, 2019 and December 31, 2017 were as follows2018 (in thousands):
  June 30, 2018 December 31, 2017
  Fair Value Fair Value
Due in less than one year $89,335
 $104,272
Due in one to five years 57,850
 59,682
Total $147,185
 $163,954
Non-Marketable Equity Investments
During the second quarter of 2017, the Company and Sixense Enterprises, Inc. formed a privately-held company, MVI Health Inc. (MVI), with each party holding 50% of the issued and outstanding equity of MVI. Pursuant to agreements between the parties at the time of MVI’s formation, the Company will be obligated to perform certain services or make additional cash contributions to MVI for no additional equity interest. These services include, but are not limited to, information technology, accounting, other administrative services and research and development. The Company’s contributions are presented as a component of “Contributions to non-marketable investments” in the statement of cash flows.
The Company accounted for its investment under the equity method and is not required to consolidate MVI under the voting model. As of June 30, 2018, the Company determined that MVI was not a variable interest entity (“VIE”). The Company will reassess in subsequent periods whether MVI becomes a VIE due to changes in facts and circumstances, including changes to the sufficiency of the equity investment at risk, management and governance structure or capital structure.
As of June 30, 2018 and December 31, 2017, the carrying value of the non-marketable equity investment was approximately $2.6 million and $3.9 million, respectively, representing the Company’s contributions to MVI offset by the Company’s share of equity method investee losses. The non-marketable equity method investment is presented in long-term investments on the condensed consolidated balance sheet. During the three months ended June 30, 2018 and 2017, MVI had no revenue and recorded a net loss of $2.5 million and $0.3 million, respectively. During the six months ended June 30, 2018 and 2017, MVI had no revenue and recorded a net loss of $4.4 million and $0.3 million, respectively. The Company reflected its 50% share of MVI’s losses in equity in losses of unconsolidated investees in the condensed consolidated statements of operations and comprehensive income (loss).
  March 31, 2019 December 31, 2018
  Fair Value Fair Value
Due in less than one year $53,205
 $83,391
Due in one to five years 46,036
 49,648
Total $99,241
 $133,039
Fair Value of Financial Instruments
Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (an exit price) in an orderly transaction between market participants at the measurement date. The accounting guidance establishes a three-tiered hierarchy, which prioritizes the inputs used in the valuation methodologies in measuring fair value:
Level 1 - Quoted prices in active markets for identical assets or liabilities.
Level 2 - Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.
Level 3 - Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.
The categorization of a financial instrument within the valuation hierarchy is based on the lowest level of input that is significant to the fair value measurement.

10

Table of Contents
Penumbra, Inc.
Notes to Condensed Consolidated Financial Statements
(unaudited)

The Company classifies its cash equivalents and marketable investments within Level 1 and Level 2, as it uses quoted market prices or alternative pricing sources and models utilizing market observable inputs.
The Company determined the fair value of its Level 1 financial instruments, which are traded in active markets, using quoted market prices for identical instruments.
Financial instruments classified within Level 2 of the fair value hierarchy are valued based on other observable inputs, including broker or dealer quotations or alternative pricing sources. When quoted prices in active markets for identical assets or

9

Table of Contents
Penumbra, Inc.
Notes to Condensed Consolidated Financial Statements
(unaudited)

liabilities are not available, the Company relies on non-binding quotes from its investment managers, which are based on proprietary valuation models of independent pricing services. These models generally use inputs such as observable market data, quoted market prices for similar instruments, or historical pricing trends of a security relative to its peers. To validate the fair value determination provided by its investment managers, the Company reviews the pricing movement in the context of overall market trends and trading information from its investment managers. In addition, the Company assesses the inputs and methods used in determining the fair value in order to determine the classification of securities in the fair value hierarchy.
The following table setstables set forth the Company’s financial assets measured at fair value by level within the fair value hierarchy as of March 31, 2019 and December 31, 2018 (in thousands):
  As of June 30, 2018
  Level 1 Level 2 Level 3 Fair Value
Financial Assets        
Cash equivalents:        
Commercial paper $
 $27,656
 $
 $27,656
Money market funds 1,725
 
 
 1,725
Marketable investments:        
Commercial paper 
 13,705
 
 13,705
U.S. treasury 6,358
 
 
 6,358
U.S. agency and government sponsored securities 
 6,182
 
 6,182
U.S. states and municipalities 
 11,444
 
 11,444
Corporate bonds 
 109,496
 
 109,496
Total $8,083
 $168,483

$

$176,566
Financial Liabilities:        
Contingent consideration obligations(1)
 $
 
 14,181
 14,181
Total $
 $
 $14,181
 $14,181
 As of December 31, 2017 As of March 31, 2019
 Level 1 Level 2 Level 3 Fair Value Level 1 Level 2 Level 3 Fair Value
Financial Assets                
Cash equivalents:                
Commercial paper $
 $9,185
 $
 $9,185
Money market funds 2,264
 
 
 2,264
 $44,331
 $
 $
 $44,331
Marketable investments:                
Commercial paper 
 19,933
 
 19,933
 
 1,500
 
 1,500
U.S. treasury 6,374
 
 
 6,374
 2,391
 
 
 2,391
U.S. agency and government sponsored securities 
 4,769
 
 4,769
 
 7,715
 
 7,715
U.S. states and municipalities 
 12,487
 
 12,487
 
 3,632
 
 3,632
Corporate bonds 
 120,391
 
 120,391
 
 84,003
 
 84,003
Total $8,638
 $166,765
 $
 $175,403
 $46,722
 $96,850

$

$143,572
Financial Liabilities:                
Contingent consideration obligations(1)
 
 
 17,392
 17,392
 $
 $
 $1,248
 $1,248
Total $
 $
 $17,392
 $17,392
 $
 $
 $1,248
 $1,248
 
(1) More information on the contingent consideration obligations and the changes in fair value are presented below.
As of June 30, 2018, the Company’s contingent consideration liabilities are classified as Level 3 measurements for which fair value is derived from various inputs, including forecasted revenues during the earn-out and milestone periods, revenue volatilities, discount rates, and estimates in the timing and likelihood of achieving revenue-based milestones. The fair value of the contingent consideration liability will be remeasured each reporting period.

1011

Table of Contents
Penumbra, Inc.
Notes to Condensed Consolidated Financial Statements
(unaudited)

In addition
  As of December 31, 2018
  Level 1 Level 2 Level 3 Fair Value
Financial Assets        
Cash equivalents:        
Commercial paper $
 $10,967
 $
 $10,967
Money market funds 12,087
 
 
 12,087
Marketable investments:        
Commercial paper 
 13,698
 
 13,698
U.S. treasury 6,378
 
 
 6,378
U.S. agency and government sponsored securities 
 7,690
 
 7,690
U.S. states and municipalities 
 5,122
 
 5,122
Corporate bonds 
 100,151
 
 100,151
Total $18,465
 $137,628
 $
 $156,093
Financial Liabilities:        
Contingent consideration obligations(1)
 $
 $
 $2,571
 $2,571
Total $
 $
 $2,571
 $2,571
(1) More information on the contingent consideration obligations and the changes in fair value are presented below.
Contingent Consideration Obligations
As of March 31, 2019 and December 31, 2018, the Company’s contingent consideration liability relates to milestone payments due in connection with the revenue generatedacquisition of Crossmed and is classified as a Level 3 measurement for which fair value is derived from various inputs, including forecasted revenues during the earn-out and milestone periods, revenue volatilities, discount rates, and estimates in the likelihood of achieving revenue-based milestones. The fair value of the contingent consideration liability is remeasured each reporting period. The following table presents certain quantitative information about certain unobservable inputs used in the Level 3 fair value measurement of the Company’s contingent consideration liabilities:liability, other than the forecasted revenues during the earn-out milestone period:
  Fair Value at June 30, 2018 (in thousands) Valuation Method Unobservable Inputs 
Input
(range where applicable)
Crossmed:
Revenue-based milestones
 $2,400
 Monte Carlo Simulation Earn-out period over which revenue-based milestone payments are made 2018 - 2019
      Risk-adjusted discount rate 15%
      Revenue volatilities for each type of revenue-based milestone 8.9% and 14.8%
Technology Licensing Agreement: Revenue-based milestones $11,781
 Income approach Earn-out period over which revenue-based milestone payments are made 2019 - 2021
      Discount rate 2.6%
  Fair Value at March 31, 2019 (in thousands) Valuation Method Unobservable Inputs 
Input
(range where applicable)
Crossmed:
Revenue-based milestones
 $1,248
 Monte Carlo Simulation Earn-out period over which revenue-based milestone payments are made 2019
      Risk-adjusted discount rate 15%
      Revenue volatilities for each type of revenue-based milestone 5.1% and 18.4%
The following table summarizestables summarize the changes in fair value of the contingent consideration obligation for the sixthree months ended June 30,March 31, 2019 and March 31, 2018 (in thousands):
 Fair Value of Contingent Consideration Fair Value of Contingent Consideration
 
Crossmed(1)
 
Technology Licensing Agreement(2)
 Total
Balance at December 31, 2017 $4,675
 $12,717
 $17,392
Balance at December 31, 2018 $2,571
Payments of contingent consideration liabilities (3,017) 
 (3,017) (1,296)
Changes in fair value 725
 (936) (211) 
Foreign currency remeasurement 17
 
 17
 (27)
Balance at June 30, 2018 $2,400
 $11,781
 $14,181
Balance at March 31, 2019 $1,248

12

Table of Contents
Penumbra, Inc.
Notes to Condensed Consolidated Financial Statements
(unaudited)

  Fair Value of Contingent Consideration
Balance at December 31, 2017 $4,675
Payments of contingent consideration liabilities (3,017)
Changes in fair value 442
Foreign currency remeasurement 133
Balance at March 31, 2018 $2,233
(1) During the three and six months ended June 30,March 31, 2019, the were no changes to the fair value of the contingent consideration obligation. During the three months ended March 31, 2018, the fair value of the contingent consideration obligations related to the acquisition of Crossmed S.p.A. (“Crossmed”)obligation increased by $0.3$0.4 million and $0.7 million, respectively, which was recorded in sales, general and administrative expense in the condensed consolidated statements of operations and comprehensive income.operations. The fair value of the contingent consideration increased as a result of updates to the underlying forecasts based on actual results to date and changes in estimates.
(2) During For more information related to the three and six months ended June 30, 2018, the fair valuepayment of the contingent consideration obligations related to the exclusive technology license agreement decreased by $0.1 million and $0.9 million, respectively, which resulted in a reduction in gross carrying amount of the related indefinite-lived intangible asset and the liability for the contingent consideration in the condensed consolidated balance sheets. The fair value of the contingent consideration decreased as a result of changes in the underlying revenue forecasts used to estimate the future milestone payments.
For more information with respect to the nature of the Company’s contingent consideration obligations,liabilities refer to Note “5. Asset Acquisitions and Business Combination” and Note “6. Intangible Assets,Combinations. respectively.
During the three and six months ended June 30,March 31, 2019 and 2018, and 2017, the Company did not record impairment charges related to its marketable investments and the Company did not hold any Level 3 marketable investments as of June 30, 2018March 31, 2019 or December 31, 2017. Also, during2018. During the sixthree months ended June 30,March 31, 2019 and 2018, and 2017, the Company did not have any transfers between Level 1, Level 2 or Level 3 of the fair value hierarchy. TheAdditionally, the Company did not have any financial assets and liabilities measured at fair value on a non-recurring basis as of June 30, 2018March 31, 2019 or December 31, 2017.2018.

11

Table of Contents
Penumbra, Inc.
Notes to Condensed Consolidated Financial Statements
(unaudited)

4. Balance Sheet Components
Inventories
The following table shows the components of inventories as of June 30, 2018March 31, 2019 and December 31, 20172018 (in thousands):
 June 30,
2018
 December 31,
2017
 March 31,
2019
 December 31,
2018
Raw materials $14,009
 $13,529
 $18,968
 $18,829
Work in process 9,911
 6,073
 12,502
 10,630
Finished goods 73,636
 75,299
 90,221
 86,282
Inventories $97,556
 $94,901
 $121,691
 $115,741
Accrued Liabilities
The following table shows the components of accrued liabilities as of June 30, 2018March 31, 2019 and December 31, 20172018 (in thousands):
 June 30,
2018
 December 31,
2017
 March 31,
2019
 December 31,
2018
Payroll and employee-related cost $24,453
 $22,001
 $31,940
 $33,838
Accrued expenses 5,094
 4,088
Sales return provision 3,009
 3,035
 2,269
 2,986
Preclinical and clinical trial cost 864
 1,514
Royalty 791
 1,115
Product warranty 1,717
 1,088
 2,077
 1,875
Leasehold improvement expenditures 918
 1,012
Acquisition-related liabilities(1)
 1,616
 4,752
Contingent consideration & other acquisition-related costs(1)
 4,611
 4,439
Other accrued liabilities 8,887
 10,308
 12,041
 10,660
Total accrued liabilities $42,255
 $44,825
 $58,032
 $57,886
 
(1) Acquisition-related liabilitiesAmount consists of the current portion of contingent considerationliabilities related to (1) the cash milestone payments and working capital adjustment liabilities for the 2017 acquisition of Crossmed.Crossmed and (2) an anti-dilution provision for the 2018 asset acquisition of MVI. Refer to Note “5. Asset Acquisitions and Business Combination”Combinations” for more information.information on the acquisition of Crossmed and asset acquisition of MVI.

13

Table of Contents
Penumbra, Inc.
Notes to Condensed Consolidated Financial Statements
(unaudited)

The following table shows the changes in the Company’s estimated product warranty accrual, included in accrued liabilities, as of June 30, 2018March 31, 2019 and December 31, 20172018 (in thousands):
  June 30,
2018
 December 31,
2017
Balance at the beginning of the period $1,088
 $1,254
Accruals of warranties issued 889
 471
Settlements of warranty claims (260) (637)
Balance at the end of the period $1,717
 $1,088

12

Table of Contents
Penumbra, Inc.
Notes to Condensed Consolidated Financial Statements
(unaudited)

  March 31,
2019
 December 31,
2018
Balance at the beginning of the period $1,875
 $1,088
Accruals of warranties issued 355
 1,336
Settlements of warranty claims (153) (549)
Balance at the end of the period $2,077
 $1,875
Other Non-Current Liabilities
The following table shows the components of other non-current liabilities as of June 30, 2018March 31, 2019 and December 31, 20172018 (in thousands):
 June 30,
2018
 December 31,
2017
 March 31,
2019
 December 31,
2018
Deferred tax liabilities $3,249
 $3,299
 $3,972
 $4,171
Licensing-related cost(1)
 11,781
 12,717
 11,463
 11,506
Asset acquisition-related costs(2)
 1,000
 2,500
Other non-current liabilities 1,968
 2,462
 209
 766
Total other non-current liabilities $16,998
 $18,478
 $16,644
 $18,943
 
(1) Amount relates to the non-current liability recorded for probable future milestone payments to be made under the licensing agreement described in Note “6. Intangible Assets.” Refer therein for more information.
(2) Asset acquisition-related costs represents the non-current portion of the probable contingent liability related to an anti-dilution provision for the 2018 asset acquisition of MVI.
5. Asset Acquisitions and Business CombinationCombinations
Payments Related to 2017 Crossmed Acquisition
On July 3, 2017, (the “Closing Date”), the Company completed theits acquisition of Crossmed, a joint stock company organized under the laws of Italy. Crossmed is engaged in the businessAs of distributing medical suppliesMarch 31, 2019 and equipment in Italy, San Marino, the Vatican, and Switzerland. Crossmed wasDecember 31, 2018, the Company’s exclusive distributorcondensed consolidated balance sheet included $1.3 million and $2.6 million, respectively, in Italy, San Marino and the Vatican and the acquisition provides the Company with a direct relationship with its customers in these regions. As of the Closing Date, Crossmed became a wholly-owned subsidiary of the Company and was integrated into the Company’s core business. The acquisition of Crossmed did not result in any changescurrent liabilities primarily related to the Company’s operating or reportable segment structure and the Company continuesadditional consideration due to operate as one operating segment.
The following table summarizes the Closing Date fair value of the consideration transferred, reflecting the measurement period adjustments recorded in the fourth quarter of 2017 (in thousands):
Cash, net of working capital and financial debt adjustments $11,088
Fair value of contingent consideration for milestone payments 4,343
Contract purchase price $15,431
Consideration for settlement of pre-existing receivable due from Crossmed to Penumbra 3,273
Total value of consideration transferred $18,704
On the Closing Date, the Company paid the sellers of Crossmed an initial payment of €8.2 million, or approximately $9.4 million, subject to post-closing adjustments(the “Sellers”) for working capital and financial debt. The Company is also obligated to pay additional consideration in the form ofrevenue-based milestone payments, based on Crossmed’s net revenue and may be required to pay additional consideration based on incremental net revenue, for the year ended December 31, 2017, and each ofin the years ending December 31, 2018 and 2019. There is no limit on the milestone payments that can be paid out. During the six months ended June 30, 2018, the Company made $4.4 million in cash payments to the Sellers, of which $3.0 million related to the achievement of the 2017 milestones2019, and the remainder related to other working capital and financial debt adjustments. TheseDuring the three months ended March 31, 2019, the Company made $1.3 million in milestone payments have beenof which $0.6 million is presented as a component ofin operating activities and $0.7 million is presented in financing activities in the condensed consolidated statement of cash flows dueflows. During the three months ended March 31, 2018, the Company made $4.3 million in payments to the natureSellers which is presented in financing activities in the condensed consolidated statement of cash flows.
Payments Related to 2018 MVI Asset Acquisition
In 2017, the Company and timingSixense Enterprises, Inc. (“Sixense”) formed MVI Health Inc. (“MVI”) as a privately-held joint venture for the purpose of exploring healthcare applications of virtual reality technology, with each party holding 50% of the payments.issued and outstanding equity of MVI. On August 31, 2018 (“Transfer Agreement Closing Date”), the Company completed its asset acquisition of MVI
pursuant to a Stock Transfer Agreement (the “Transfer Agreement”) between the Company, MVI and Sixense to obtain a controlling interest of MVI for $20.0 million, excluding the additional $4.5 million of probable future payments relating to an anti-dilution provision in the Transfer Agreement. Following the Transfer Agreement Closing Date, the Company owns a 90% controlling interest in MVI and Sixense retains the remaining 10% minority interest. During the year ended December 31, 2018, the Company contributed $0.5 million to MVI related to the anti-dilution provision. As of June 30,December 31, 2018, the fair value of the current and non-current portion of the related liabilities for the future cash milestone payments recorded on theCompany’s condensed consolidated balance sheet was $1.2included $1.5 million and $2.5 million, respectively, $1.2 million, respectively. For more information with respectin current and non-current liabilities related to the nature and fair valueanti-dilution provision in the Transfer Agreement. As of March 31, 2019, the Company’s contingent consideration obligations, refercondensed consolidated balance sheet included $3.0 million and $1.0 million, respectively, in current and non-current liabilities related to Note “3. Investments and Fair Value of Financial Instruments.”the anti-dilution provision in the Transfer Agreement.

1314

Table of Contents
Penumbra, Inc.
Notes to Condensed Consolidated Financial Statements
(unaudited)

The purchase price measurement period was closed as of June 30, 2018. The following table presents the allocation of the purchase price for Crossmed, reflecting the measurement period adjustments recorded in 2017 (in thousands):
  Acquisition-Date Fair ValueEstimated Useful Life of Finite-Lived Intangible Assets
Tangible assets acquired and (liabilities) assumed:   
Accounts receivable $4,406
 
Inventories 1,343
 
Other current and non-current assets 1,596
 
Property and equipment, net 829
 
Accounts payable (740) 
Accrued liabilities and obligations for short-term debt and credit facilities (1,868) 
Deferred tax liabilities (2,472) 
Other non-current liabilities (797) 
Intangible assets acquired:   
Customer relationships $6,790
15 years
Other 1,750
5 years
Goodwill 7,867
 
Total purchase price $18,704
 
Acquired intangible assets are classified as Level 3 measurements for which fair value is derived from valuations based on inputs that are unobservable and significant to the overall fair value measurement. The Company used the income approach, specifically the discounted cash flow method and the incremental cash flow approach, to derive the fair value of the customer relationships and other intangible assets. Customer relationships are direct relationships with physicians and hospitals performing procedures with the distributed products. Other intangibles consist of non-Penumbra supplier relationships and sub-distributor relationships with third parties used to sell products, both as of the Closing Date. The intangible assets are amortized on a straight-line basis over their assigned estimated useful lives. The amortization of the acquired intangible assets are not deductible for tax purposes. As a result, a $2.5 million deferred tax liability was recorded as of the Closing Date.
The goodwill arising from the Crossmed acquisition is primarily attributed to expected synergies from future growth and assembled workforce. Goodwill will not be deductible for tax purposes.
6. Intangible Assets
Acquired Intangible Assets
The following table presentstables present details of the Company’s acquired finite-lived and indefinite-lived intangible assets, as of June 30, 2018March 31, 2019 and December 31, 20172018 (in thousands, except weighted-average amortization period):
March 31, 2019 Weighted-Average Amortization Period Gross Carrying Amount Accumulated Amortization Net
Customer relationships 15.0 years $6,688
 $(781) $5,907
Trade secrets and processes 20.0 years 5,256
 (329) 4,927
Other 5.0 years 1,725
 (603) 1,122
Total intangible assets subject to amortization 16.1 years $13,669
 $(1,713) $11,956
Intangible assets related to licensed technology   14,857
 
 14,857
Total intangible assets   $28,526
 $(1,713) $26,813
As of June 30, 2018 Weighted-Average Amortization Period Gross Carrying Amount Accumulated Amortization Net
December 31, 2018 
Weighted-Average
Amortization Period
 Gross Carrying Amount Accumulated Amortization Net
Customer relationships 15.0 years $6,966
 $(465) $6,501
 15.0 years $6,823
 $(681) $6,142
Trade secrets and processes 20.0 years 5,256
 (131) 5,125
 20.0 years 5,256
 (263) 4,993
Other 5.0 years 1,796
 (359) 1,437
 5.0 years 1,759
 (528) 1,231
Total intangible assets subject to amortization 15.9 years $14,018
 $(955) $13,063
 16.0 years $13,838
 $(1,472) $12,366
Intangible assets related to licensed technology 14,281
 
 14,281
 14,879
 
 14,879
Total intangible assets $28,299
 $(955) $27,344
 $28,717
 $(1,472) $27,245

14

Table of Contents
Penumbra, Inc.
Notes to Condensed Consolidated Financial Statements
(unaudited)

As of December 31, 2017 
Weighted-Average
Amortization Period
 Gross Carrying Amount Accumulated Amortization Net
Customer relationships 15.0 years $7,141
 $(238) $6,903
Other 5.0 years 1,841
 (183) 1,658
Total intangible assets subject to amortization 13.1 years $8,982
 $(421) $8,561
Intangible assets related to licensed technology   15,217
 
 15,217
Total intangible assets   $24,199
 $(421) $23,778
The customer relationships and other intangible assets subject to amortization relate to the acquisition of Crossmed during the third quarter of 2017. The gross carrying amount and accumulated amortization of these intangible assets are subject to foreign currency translation effects. Refer to Note “5. Asset Acquisitions and Business Combination”Combinations” for more information. The Company’s $5.3 million trade secrets and processes intangible asset was recognized in connection with a royalty buyout agreement during the first quarter of 2018, which is discussed further in Note “8.“9. Commitments and Contingencies” and Note “9.10. Stockholders’ Equity.”
The following table presents the amortization expense recorded related to the Company’s finite-lived intangible assets for the three months ended March 31, 2019 and March 31, 2018 (in thousands):
 Three Months Ended June 30, Six Months Ended June 30, Three Months Ended March 31,
 2018 2017 2018 2017 2019 2018
Cost of revenue $101
 $
 $131
 $
 $66
 $31
Sales, general and administrative 210
 
 427
 
 200
 216
Total $311
 $
 $558
 $
 $266
 $247
Licensed technology
During the third quarter of 2017, the Company entered into an exclusive technology license agreement (the “License Agreement”) that required the Company to pay an upfront payment to the licensor of $2.5 million and future revenue milestone-based payments on sales of products covered by the licensed intellectual property. The Company recorded an intangible asset equal to the total payments made and expected to be made under the License Agreement and a corresponding contingent consideration liability for the probable future milestone payments not yet paid. TheAs of March 31, 2019, the licensed technology is accounted for as an indefinite-lived intangible asset. Once regulatory approval is received to market and commercialize productsUpon the commercialization of the underlying product utilizing the underlyinglicensed technology, the Companycapitalized amount will begin amortizing the intangible asset.be amortized over its estimated useful life.
The fair value of the contingent consideration liability is evaluated atAt the end of each reporting period.period the Company adjusts the contingent liabilities to reflect the amount of future milestone payments that are probable to be paid. Prior to the commercialization of products utilizing the underlying technology, any changes in fair value of the contingent consideration liability are recorded as an adjustment between the liability balancebalances and the gross carrying amount of

15

Table of Contents
Penumbra, Inc.
Notes to Condensed Consolidated Financial Statements
(unaudited)

the indefinite-lived intangible asset. During the three months ended March 31, 2019, there were no material changes to the contingent liability related to the License Agreement. As of June 30, 2018March 31, 2019, the balance of the contingent consideration liability related to probable future milestone payments under the LicensingLicense Agreement was $11.8$12.4 million, of which $0.9 million and is$11.5 million were included in accrued liabilities and other non-current liabilities on the condensed consolidated balance sheet. sheet, respectively. As of December 31, 2018, the balance of the contingent liability related to probable future milestone payments under the License Agreement was $12.4 million, of which $0.9 million and $11.5 millionwere included in accrued liabilities and other non-current liabilities on the consolidated balance sheet, respectively.
As of June 30, 2018March 31, 2019, the gross carrying amount of the indefinite-lived intangible asset was $14.3 million. Refer to Note “3. Investments and Fair Value of Financial Instruments” for more information.$14.9 million. During the sixthree months ended June 30, 2018March 31, 2019, the Company noted no events or circumstances that indicate the carrying value of the licensed technology may no longer be recoverable and that an impairment loss may have occurred.
7. Goodwill
The following table presents the changes in goodwill during the sixthree months ended June 30, 2018March 31, 2019 (in thousands):
  Total Company
Balance as of December 31, 2017 $8,178
Foreign currency translation (201)
Balance as of June 30, 2018 $7,977

15

Table of Contents
Penumbra, Inc.
Notes to Condensed Consolidated Financial Statements
(unaudited)

  Total Company
Balance as of December 31, 2018 $7,813
Foreign currency translation (154)
Balance as of March 31, 2019 $7,659
Goodwill Impairment Review
The Company reviews goodwill for impairment annually during the fourth quarter, on October 31st, or more frequently if events or circumstances indicate that an impairment loss may have occurred. During the sixthree months ended June 30, 2018March 31, 2019, there were no events or changes in circumstances which triggered an impairment review.
8. CommitmentsLeases
Adoption of ASC Topic 842, “Leases”
The Company adopted the guidance under ASC 842 on January 1, 2019 using the modified retrospective transition approach. Therefore the comparative prior year information has not been adjusted and Contingenciescontinues to be reported under ASC 840.

16

Table of Contents
Penumbra, Inc.
Notes to Condensed Consolidated Financial Statements
(unaudited)

The impact of the adoption of ASC 842 on the Company’s condensed consolidated balance sheet as of January 1, 2019 was as follows (in thousands):
  December 31, 2018 Adjustments due to the adoption of Topic 842 January 1, 2019
Assets      
    Prepaid expenses and other current assets(1)
 12,200
 (424) 11,776
          Total current assets 410,726
 (424) 410,302
    Operating lease right-of-use assets(1)
 
 43,277
 43,277
          Total assets $515,006
 $42,853
 $557,859
       
Liabilities and Stockholders’ Equity      
    Current liabilities:      
       Accrued liabilities(2)
 57,886
 (132) 57,754
       Current operating lease liabilities(2)
 
 3,608
 3,608
          Total current liabilities 66,062
 3,476
 69,538
       Deferred rent(2)
 7,586
 (7,586) 
       Non-current operating lease liabilities(2)
 
 46,963
 46,963
          Total liabilities 92,591
 42,853
 135,444
             Total liabilities and stockholders’ equity $515,006
 $42,853
 $557,859
(1) Upon the adoption of ASC 842, prepaid rent is included in the operating lease right-of-use assets.
(2) Upon the adoption of ASC 842, current and non-current deferred rent is included in the current and non-current operating lease liabilities.
Lease CommitmentsOverview
As of December 31, 2018 and March 31, 2019, the Company's contracts that contained a lease consisted of real estate, equipment and vehicle leases.
The Company leases its officesreal estate for office and warehouse space primarily under non-cancelable operating leases that expire at various dates through 2031, subject to itsthe Company’s option to renew certain leases for an additional 5five to 15 years. Rent expense for non-cancelable operating leases with scheduled rent increases is recognized on a straight-line basis over the lease term. Rent expense for the three months ended June 30, 2018 and 2017 was $1.4 million and $1.5 million, respectively, and for the sixfifteen months ended June 30, 2018 and 2017 was $2.9 million and $2.9 million, respectively. In addition, the Company’s lease commitments also require it to make additional payments during the lease term for taxes, insurance and other operating expenses.years. The Company also leases other equipment and vehicles primarily under non-cancelable operating leases that expire at various dates through 2021.2023. As of December 31, 2018 and March 31, 2019, the Company did not have material finance leases.
The following table presents the components of the Company’s lease cost, lease term and discount rate during the three months ended March 31, 2019 (in thousands, expect years and percentages):
  Three Months Ended
March 31, 2019
Operating lease cost $1,768
Variable lease cost 758
Total lease costs $2,526
   
Weighted Average Remaining Lease Term  
Operating leases 10.6 years
   
Weighted Average Discount Rate  
Operating leases 6.2%
(1) Variable lease costs represent payments that are dependent on usage, a rate or index. Variable lease cost primarily relates to common area maintenance charges for its real estate leases as the Company elected not to separate non-lease components from lease components upon adoption of ASC 842.

17

Table of Contents
Penumbra, Inc.
Notes to Condensed Consolidated Financial Statements
(unaudited)


Prior to January 1, 2019, the Company recorded operating lease rent expense under ASC 840 on a straight-line basis over the non-cancellable lease term. Rent expense for the three months ended March 31, 2018 was $1.4 million.
During the third quarter of 2018, the Company signed a fifteen year lease for a manufacturing facility in Roseville, California (the “Roseville Lease”) which has not yet commenced as of March 31, 2019. The Roseville Lease is expected to commence upon substantial completion of lessor owned improvements to the building which the Company anticipates will be in 2020.
The following table is a schedule, by years, of maturities of the Company's lease liabilities as of March 31, 2019 (in thousands):
  
Lease Payments(1)
Remainder of 2019 $5,000
Year ending December 31, 2020 6,586
Year ending December 31, 2021 5,887
Year ending December 31, 2022 5,801
Year ending December 31, 2023 5,787
Year ending December 31, 2024 5,849
Thereafter 33,929
Total undiscounted lease payments $68,839
Less imputed interest (19,081)
Present value of lease liabilities $49,758
(1) The table above excludes the estimated future minimum lease payment for the Roseville Lease, due to the uncertainty around the timing of when the Roseville Lease will commence and payments will be due. The total estimated lease payments over the fifteen year lease term is approximately $40.9 million. The table also excludes lease payments that were not fixed at commencement or modification.
The following table below shows the maturities of the Company’s operating lease liabilities previously disclosed under ASC 840 as of December 31, 2018 (in thousands):
  
Lease Payments(1)
Year Ending December 31:  
2019 $6,575
2020 6,571
2021 5,809
2022 5,772
2023 5,735
Thereafter 40,194
Total future minimum lease payments $70,656
(1) The table above excludes the estimated future minimum lease payment for the Roseville Lease, due to the uncertainty around the timing of when the Roseville Lease will commence and payments will be due.
Supplemental cash flow information related to leases during the three months ended March 31, 2019 are as follows (in thousands):
  Three Months Ended
March 31, 2019
Cash paid for amounts included in the measurement of lease liabilities:  
Operating cash flows from operating leases $1,623

18

Table of Contents
Penumbra, Inc.
Notes to Condensed Consolidated Financial Statements
(unaudited)

9. Commitments and Contingencies
Royalty Obligations
In March 2005, the Company entered into a license agreement that requires the Company to make minimum royalty payments to the licensor on a quarterly basis. As of both June 30, 2018March 31, 2019 and December 31, 2017,2018, the license agreement required minimum annual royalty payments of $0.1 million in equal quarterly installments. On each January 1, the quarterly calendar year minimum royalty shall be adjusted to equal the prior year’s minimum royalty adjusted by a percentage equal to the percentage change in the “consumer price index for all urban consumers” for the prior calendar year as reported by the U.S. Department of Labor. Unless terminated earlier, the term of the license agreement shall continue until the expiration of the last to expire patent that covers that licensed product or for the period of 15fifteen years following the first commercial sale of such licensed product, whichever is longer. The first commercial sale of covered products occurred in June 2007.
In April 2012, the Company entered into an agreement that requires the Company to pay, on a quarterly basis, a 5% royalty on sales of products covered under applicable patents. The first commercial sale of covered products occurred in April 2014. Unless terminated earlier, the royalty term for each applicable product shall continue for 15fifteen years following the first commercial sale of such patented product, or when the applicable patent covering such product has expired, whichever is sooner.
In November 2013, the Company entered into an agreement that required the Company to pay, on a quarterly basis, a 3% royalty on the first $5.0 million in sales and a 1% royalty on sales thereafter of products covered under applicable patents. The agreement was terminated effective January 1, 2018.
In April 2015, the Company entered into a royalty agreement that required the Company to pay a 2% royalty on sales of certain products covered by the agreement, on a quarterly basis, in exchange for certain trade secrets and processes which were used to develop such covered products. The Company began the first commercial sale of the covered products in July 2015. In the first quarter of 2018, the Company entered into a buyout of this agreement (the “Buyout Agreement”) in which future royalty payments under the royalty agreement were canceled in exchange for shares of the Company’s common stock with a fair value of $5.3 million. The Company recorded an intangible asset equal to the $5.3 million buyout amount which will be amortized into cost of sales over the period in which the Company receives future economic benefit. After determining that the pattern of future cash flows associated with this intangible asset could not be reliably estimated with a high level of precision, the Company concluded that the intangible asset will be amortized on a straight‑line basis over its estimated useful life. For more information refer to Note “6. Intangible Assets” and Note “9.10. Stockholders’ Equity.”
Royalty expense included in cost of revenue for the three months ended June 30, 2018 and 2017, was $0.8 million and $1.2 million, respectively, and for the sixthree months ended June 30,March 31, 2019 and 2018, and 2017 was $1.6$1.1 million and $2.0$0.7 million, respectively.
Contingencies
From time to time, the Company may have certain contingent liabilities that arise in the ordinary course of business. The Company accrues a liability for such matters when it is probable that future expenditures will be made and such expenditures can be reasonably estimated. Refer to Note “3. Investments and Fair Value of Financial Instruments,” Note “5. Asset Acquisitions and Business Combination”Combinations” and Note “6. Intangible Assets” for more information on contingent liabilities recorded on the condensed consolidated balance sheet.

16

Table of Contents
Penumbra, Inc.
Notes to Condensed Consolidated Financial Statements
(unaudited)

Indemnification
The Company enters into standard indemnification arrangements in the ordinary course of business. In many such arrangements, the Company agrees to indemnify, hold harmless, and reimburse the indemnified parties for losses suffered or incurred by the indemnified parties in connection with any trade secret, copyright, patent or other intellectual property infringement claim by any third-party with respect to the Company’s technology. The Company also agrees to indemnify many purchasers for product defect and similar claims. The term of these indemnification agreements is generally perpetual. The maximum potential amount of future payments the Company could be required to make under these agreements is not determinable because it involves claims that may be made against the Company in the future, but have not yet been made.
The Company has entered into indemnification agreements with its directors and officers that may require the Company to indemnify its directors and officers against liabilities that may arise by reason of their status or service as directors or officers, other than liabilities arising from willful misconduct of the individual.

19

Table of Contents
Penumbra, Inc.
Notes to Condensed Consolidated Financial Statements
(unaudited)

The Company has not incurred costs to defend lawsuits or settle claims related to these indemnification agreements. No liability associated with any of these indemnification requirements has been recorded to date.
Litigation
From time to time, the Company is subject to other claims and assessments in the ordinary course of business. The Company is not currently a party to any such litigation matter that, individually or in the aggregate, is expected to have a material adverse effect on the Company’s business, financial condition, results of operations or cash flows.
9.10. Stockholders’ Equity
Common Stock
In the first quarter of 2017, the Company issued and sold an aggregate of 1,495,000 shares of common stock at a public offering price of $76.00 per share, less the underwriters’ discounts and commissions, pursuant to an underwritten public offering. The Company received approximately $106.3 million in net cash proceeds after deducting underwriting discounts and commissions of $6.8 million and other offering expenses of $0.5 million.
In the first quarter of 2018, the Company issued 53,256 fully vested restricted stock units with a fair value of $5.3 million in connection with the Buyout Agreement, as discussed in Note “6. Intangible Assets” and Note “8.“9. Commitments and Contingencies.” The Company recorded the $5.3 million fair value of the shares issued to additional-paid in capital on the condensed consolidated balance sheet upon the issuance of the awards, with the associated expense being amortized into cost of sales over the period in which the Company receives future economic benefit from the buyout.
Equity Incentive Plans
Stock Options
Activity of stock options under the Penumbra, Inc. 2005 Stock Plan, the Penumbra, Inc. 2011 Equity Incentive Plan and the Amended and Restated Penumbra, Inc. 2014 Equity Incentive Plan (collectively the “Plans”) during the sixthree months ended June 30, 2018March 31, 2019 is set forth below:
 Number of Shares 
Weighted-Average
Exercise Price
 Number of Shares 
Weighted-Average
Exercise Price
Balance at December 31, 2017 2,107,104
 $17.58
Balance at December 31, 2018 1,688,881
 $18.91
Exercised (244,166) 12.97
 (89,451) 11.97
Canceled/Forfeited (2,014) 22.04
 (3,175) 21.94
Balance at June 30, 2018 1,860,924
 18.18
Balance at March 31, 2019 1,596,255
 19.29
 
Restricted Stock and Restricted Stock Units
Activity of unvested restricted stock awards and restricted stock units under the Plans during the three months ended March 31, 2019 is set forth below:
  Number of Shares 
Weighted -Average
Grant Date Fair Value
Unvested at December 31, 2018 451,463
 $57.29
Granted 63,113
 146.80
Vested (51,147) 60.82
Canceled/Forfeited (1,350) 92.69
Unvested at March 31, 2019 462,079
 69.02
As of March 31, 2019, 449,313 restricted stock awards and restricted stock units are expected to vest.

1720

Penumbra, Inc.
Notes to Condensed Consolidated Financial Statements
(unaudited)

Restricted Stock and Restricted Stock Units
Activity of unvested restricted stock and restricted stock units under the Plans during the six months ended June 30, 2018 is set forth below:
  Number of Shares 
Weighted -Average
Grant Date Fair Value
Unvested at December 31, 2017 742,405
 $38.86
Granted 89,436
 103.09
Vested (330,374) 33.57
Canceled/Forfeited (3,125) 77.14
Unvested at June 30, 2018 498,342
 53.65
As of June 30, 2018, 486,889 restricted stock and restricted stock units are expected to vest.
Stock-based Compensation
The following table sets forth the stock-based compensation expense included in the Company’s condensed consolidated statements of operations and comprehensive income (loss) for the three and six months ended June 30,March 31, 2019 and 2018 and 2017 (in thousands):
 Three Months Ended June 30, Six Months Ended June 30, Three Months Ended March 31,
 2018 2017 2018 2017 2019 2018
Cost of revenue $198
 $191
 $417
 $501
 $291
 $219
Research and development 375
 308
 743
 561
 524
 368
Sales, general and administrative 4,412
 4,094
 7,979
 7,543
 4,280
 3,567
Total $4,985
 $4,593
 $9,139
 $8,605
 $5,095
 $4,154
As of June 30, 2018,March 31, 2019, total unrecognized compensation cost was $25.5$25.8 million related to unvested share-based compensation arrangements which is expected to be recognized over a weighted average period of 2.12.5 years.
The total stock-based compensation cost capitalized in inventory was $0.3$0.5 million and $0.2$0.4 million as of June 30, 2018March 31, 2019 and December 31, 2017,2018, respectively.
10.11. Accumulated Other Comprehensive (Loss) Income (Loss)
Other comprehensive (loss) income (loss) consists of two components: unrealized gains or losses on the Company’s available-for-sale marketable investments and gains or losses from foreign currency translation adjustments. Until realized and reported as a component of net (loss) income, (loss), these comprehensive income (loss) items accumulate and are included within accumulated other comprehensive income (loss). income. Unrealized gains and losses on the Company’s marketable investments are reclassified from accumulated other comprehensive (loss) income (loss) into earnings when realized upon sale, and are determined based on specific identification of securities sold. Gains and losses from the translation of assets and liabilities denominated in non-U.S. dollar functional currencies are included in accumulated other comprehensive income (loss). income.

18

Penumbra, Inc.
Notes to Condensed Consolidated Financial Statements
(unaudited)

The following table summarizes the changes in the accumulated balances during the three and six months ended June 30,March 31, 2019 and March 31, 2018, and June 30, 2017, and includes information regarding the manner in which the reclassifications out of accumulated other comprehensive (loss) income (loss) into earnings affect the Company’s condensed consolidated statements of operations and consolidated statements of comprehensive (loss) income (loss) (in thousands):
  Three Months Ended June 30, 2018 Three Months Ended June 30, 2017
   Marketable
Investments
  Currency Translation
Adjustments
  Total  Marketable
Investments
  Currency Translation
Adjustments
  Total
Balance at beginning of the period $(553) $3,190
 $2,637
 $(35) $(3,891) $(3,926)
Other comprehensive income before reclassifications:            
Unrealized gain— marketable investments 132
 
 132
 2
 
 2
Foreign currency translation (losses) 
 (3,400) (3,400) 
 (766) (766)
Income tax effect — (expense) (30) 
 (30) 
 
 
Net of tax 102
 (3,400) (3,298) 2
 (766) (764)
Amounts reclassified from accumulated other comprehensive income to earnings:            
Realized gains — marketable investments 
 
 
 (5) 
 (5)
Income tax effect — (expense) 
 
 
 
 
 
Net of tax 
 
 
 (5) 
 (5)
Net current-year other comprehensive income (loss) 102
 (3,400) (3,298) (3) (766) (769)
Balance at end of the period $(451) $(210) $(661) $(38) $(4,657) $(4,695)
 Six Months Ended June 30, 2018 Six Months Ended June 30, 2017 Three Months Ended March 31, 2019 Three Months Ended March 31, 2018
  Marketable
Investments
  Currency Translation
Adjustments
  Total  Marketable
Investments
  Currency Translation
Adjustments
  Total  Marketable
Investments
  Currency Translation
Adjustments
  Total  Marketable
Investments
  Currency Translation
Adjustments
  Total
Balance at beginning of the period $(235) $1,804
 $1,569
 $(105) $(4,583) $(4,688) $(500) $(1,442) $(1,942) $(235) $1,804
 $1,569
Other comprehensive income before reclassifications:            
Unrealized (losses) gain— marketable investments (253) 
 (253) 103
 
 103
Foreign currency translation (losses) 
 (1,792) (1,792) 
 (74) (74)
Other comprehensive (loss) income before reclassifications:            
Unrealized gain (losses)— marketable investments 462
 
 462
 (386) 
 (386)
Foreign currency translation (losses) gains 
 (1,098) (1,098) 
 1,608
 1,608
Income tax effect — benefit (expense) 37
 (222) (185) 
 
 
 
 
 
 68
 (222) (154)
Net of tax (216) (2,014) (2,230) 103
 (74) 29
 462
 (1,098) (636) (318) 1,386
 1,068
Amounts reclassified from accumulated other comprehensive income to earnings:                        
Realized gains — marketable investments 
 
 
 (36) 
 (36)
Income tax effect — expense 
 
 
 
 
 
Income tax effect — expenses 
 
 
 
 
 
Net of tax 
 
 
 (36) 
 (36) 
 
 
 
 
 
Net current-year other comprehensive (loss) income (216) (2,014) (2,230) 67
 (74) (7) 462
 (1,098) (636) (318) 1,386
 1,068
Balance at end of the period $(451) $(210) $(661) $(38) $(4,657) $(4,695) $(38) $(2,540) $(2,578) $(553) $3,190
 $2,637

11.12. Income Taxes
The Company’s income tax expense, deferred tax assets and liabilities, and reserves for unrecognized tax benefits reflect management’s best assessment of estimated current and future taxes to be paid. The Company is subject to income taxes in both the United States and foreign jurisdictions. Significant judgment and estimates are required in determining the consolidated income tax expense.

21

Penumbra, Inc.
Notes to Condensed Consolidated Financial Statements
(unaudited)

During interim periods, the Company generally utilizes the estimated annual effective tax rate method which involves the use of forecasted information. Under this method, the provision is calculated by applying an estimate of the annual effective tax rate for the full fiscal year to “ordinary” income or loss (pretax income or loss excluding unusual or infrequently occurring discrete items) for the reporting period. Jurisdictions with tax assets for which the Company believes a tax benefit cannot be realized are excluded from the computation of its annual effective tax rate.
The Company’s provision for income taxes was $1.5 million for the three months ended March 31, 2019, compared to a $4.9$1.9 million of tax benefit for the three months ended June 30, 2018, compared to a $0.5 million tax expense for the three months ended June 30, 2017.March 31, 2018. The Company’s effective tax rate changed to

19

Penumbra, Inc.
Notes 12.2% for the three months ended March 31, 2019, compared to Condensed Consolidated Financial Statements
(unaudited)

(51.2)(43.0)% for the three months ended June 30, 2018, compared to (52.5)%March 31, 2018. The Company’s provision for (benefit from) income taxes for the three months ended June 30, 2017. The Company’s provision for income taxes was a $6.9 million tax benefit in the six months ended June 30,March 31, 2019 and 2018 compared to a $1.8 million tax expense in the six months ended June 30, 2017. The Company’s effective tax rate changed to (48.6)% for the six months ended June 30, 2018, compared to (68.8)% for the six months ended June 30, 2017. The tax benefit from income taxes for the three and six months ended June 30, 2018 waswere primarily due to the inclusion ofincome taxes attributable to its worldwide profits offset by excess tax benefits from stock-based compensation attributable to the Company’s US jurisdiction, offset byU.S. jurisdiction. The change in rate was primarily attributable to income taxes attributable to the Company’son higher worldwide profits. Theprofits combined with lower excess stock-based compensation tax provisionbenefits for the three and six months ended June 30, 2017 was primarily due to income taxes attributableMarch 31, 2019, when compared to the Company’s foreign jurisdictions, and the tax impact from recognizing the deferred tax assets associated with intra-entity asset transfers. The tax benefits attributable to the Company’s US jurisdiction were excluded from its tax provision for the three and six months ended June 30,March 31, 2018.
The 2017 due to the partial valuation allowance recorded against the Company’s domestic DTAs as of June 30, 2017.
On December 22, 2017, the Tax Reform Act was enacted. The Tax Reform Act significantly revised the U.S. corporate income tax regime by, including but not limited to, lowering the U.S. corporate income tax rate to 21% effective January 1, 2018, implementing a territorial tax system, imposing a one-time transition tax on previously untaxed accumulated earnings and profits of foreign subsidiaries, and creating new taxes on foreign sourced earnings. Also on December 22, 2017,regime. In addition, the Securities and Exchange Commission issued Staff Accounting Bulletin 118 (“SAB 118”), which provides guidance on accounting for tax effects of the Tax Reform Act. SAB 118 providesprovided a measurement period, that should not extend beyond one year from the Tax Reform Act enactment date, for companies to completedate. In the accounting under ASC 740. In accordance with SAB 118, a company must reflectperiod ended December 31, 2018, the income tax effects of those aspects of the Tax Reform Act for which the accounting under ASC 740 is complete. To the extent that a company’sCompany completed its accounting for certain incomethe tax effects of the Tax Reform Act is incomplete but it is ableunder FASB ASC 740 “Income Taxes” based on authoritative guidance available to determine a reasonable estimate, it must record a provisional estimatedate. The Company will continue to be included inevaluate the impact of further guidance from federal and state tax authorities on the financial statements.
Instatements and determine if any adjustments to the six months ended June 30, 2018, the Companypreviously recorded a provisional tax charge for the deemed repatriation tax on the undistributed earnings of its foreign subsidiaries. The Company also made sufficient progress on its global intangible low-taxed income tax analysis to reasonably estimate the effects and therefore reflected provisional amounts in the Company’s financial statements for the six months ended June 30, 2018. Recording estimates of the tax impact of the deemed repatriation and the global intangible low-taxed income did not have a material effect on the Company’s financial statements. The final impact of the Tax Reform Act may differ from these estimates, due to, among other things, changes in the Company’s interpretations and assumptions, and additional guidance that mayunder ASC 740 will be issued.required.
With the adoption of ASU 2016-09, additionalSignificant domestic deferred tax assets (“DTAs”) were generated in recent years, primarily due to excess tax benefits from stock option exercises and vesting of NOLrestricted stock. The Company evaluates all available positive and credit carryforwards were created. With any DTAs, an assessment is necessarynegative evidence, objective and subjective in nature, in each reporting period to determine if sufficient taxable income will be generated to realize the benefits of its DTAs and, if not, a substantial valuation allowance to reduce the DTAs may be required. The Company assessed its ability to realize the benefitsis recorded. As of its domestic DTAs by evaluating all available positiveMarch 31, 2019 and negative evidence, objective and subjective in nature, including (1) cumulative results of operations in recent years, (2) sources of recent pre-tax income, (3) estimates of future taxable income, and (4) the length of net operating loss (“NOL”) carryforward periods.
The Company considered its projections of future taxable income in conjunction with relevant provisions of the Tax Reform Act, and concluded that sufficient future taxable income will be generated to realize the benefits of its federal DTAs prior to expiration other than its federal research and development tax credit DTAs. The Company’s federal research and development tax credit DTAs, which have a 20 year carryforward period, are expected to expire prior to utilization based on future projected taxable income. As a result,2018, the Company maintains a valuation allowance against its federal researchFederal Research and development tax creditDevelopment Tax Credit and California DTAs as of June 30, 2018.
Consistent with prior periods, the Company maintainedcould not conclude at the required more-likely-than-not level of certainty, that the benefit of these tax attributes would be realized prior to expiration. As of March 31, 2019, the Company also maintains a full valuation allowance against DTAs acquired from MVI which are subject to Separate Return Limitation Year (“SRLY”) rules that limit the utilization of the pre-acquisition tax attributes to offset future taxable income solely generated by MVI.

The Company maintains that all foreign earnings, with the exception of a portion of the earnings of its California DTAsGerman subsidiary, are permanently reinvested outside the United States and therefore deferred taxes attributable to such are not provided for in the Company’s financial statements as of June 30, 2018.March 31, 2019. The Company will repatriate foreign earnings only to the extent doing so will not result in any material U.S. tax consequences. Thus, deferred taxes on any potential future repatriation of a portion of the earnings of its German subsidiary were not reflected in the Company’s financial statements as of March 31, 2019.
12.13. Net Income (Loss) perAttributable to Penumbra, Inc. Per Share
The Company’s basic net income (loss)attributable to Penumbra, Inc. per share is calculated by dividing the net income (loss)attributable to Penumbra, Inc. by the weighted average number of shares of common stock outstanding for the period. The diluted net income (loss) per share is computed by giving effect to all potential dilutive common stock equivalents outstanding for the period. For purposes of this calculation, options to purchase common stock, restricted stock, restricted stock units and stock sold through the Company’s employee stock purchase plan are considered common stock equivalents.

2022

Penumbra, Inc.
Notes to Condensed Consolidated Financial Statements
(unaudited)

A reconciliation of the numerator and denominator used in the calculation of the basic and diluted net income (loss) per share for the three and six months ended June 30,March 31, 2019 and 2018 and 2017 is as follows (in thousands, except share and per share amounts):
 Three Months Ended June 30, Six Months Ended June 30, Three Months Ended March 31,
 2018 2017 2018 2017 2019 2018
Numerator:            
Net income (loss) — basic and diluted $13,381
 $(1,558) $18,872
 $(4,664)
Net income attributable to Penumbra, Inc. $10,698
 $5,491
Denominator:            
Weighted average shares used to compute net income (loss):        
Weighted average shares used to compute net income:    
Basic 34,072,223
 33,219,487
 33,959,997
 32,420,105
 34,507,279
 33,846,142
Effect of dilutive securities from stock-based benefit plans, as calculated using treasury stock method 2,044,031
 
 2,070,307
 
 1,705,885
 2,070,909
Diluted 36,116,254
 33,219,487
 36,030,304
 32,420,105
 36,213,164
 35,917,051
Net income (loss) per share from:
        
Net income attributable to Penumbra, Inc. per share from:    
Basic $0.39
 $(0.05) $0.56
 $(0.14) $0.31
 $0.16
Diluted $0.37
 $(0.05) $0.52
 $(0.14) $0.30
 $0.15
Outstanding common stock equivalents of 857 thousand and 3.2 million24 thousand shares for the three months ended June 30,March 31, 2019 and 2018, and 2017, respectively, and 63 thousand and 3.2 million shares for the six months ended June 30, 2018 and 2017, respectively, were excluded from the computation of diluted net income (loss)attributable to Penumbra, Inc. per share because their effect would have been anti-dilutive.

2123

Penumbra, Inc.
Notes to Condensed Consolidated Financial Statements
(unaudited)

13.14. Revenues
Adoption of ASC Topic 606, “Revenue from Contracts with Customers”
The Company adopted the guidance under ASC 606 on January 1, 2018 using the modified retrospective method for all contracts not completed as of the date of adoption. Therefore, the comparative prior year information has not been adjusted and continues to be reported under ASC 605 with the impact of the adoption reflected in opening retained earnings. As a result of adoption, the cumulative impact to our retained earnings at January 1, 2018 was $0.3 million.
The adoption of ASC 606 represents a change in accounting principle that more closely aligns the timing of revenue recognition with the point in time that a performance obligation is satisfied. The Company’s performance obligations are satisfied at a point in time. The implementation of the new standard did not have a material impact on the measurement or recognition of revenue from prior periods, however additional disclosures have been added in accordance with the guidance.
As required by ASC 606, the impact of adoption of the new revenue standard on the Company's condensed consolidated statements of operations and comprehensive income and condensed consolidated balance sheets was as follows (in thousands):
  As of June 30, 2018
      Adjusted Balance
  As Reported Adjustments Without 606 Adoption
Consolidated Balance Sheet Data:      
Assets      
Accounts receivable, net of doubtful accounts 74,059
 (898) 73,161
Inventories 97,556
 305
 97,861
Deferred taxes 34,129
 187
 34,316
Equity      
Retained Earnings 21,333
 (406) 20,927
  Three Months Ended June 30, 2018 Six Months Ended June 30, 2018
      Adjusted Balance     Adjusted Balance
  As Reported Adjustments Without 606 Adoption As Reported Adjustments Without 606 Adoption
Consolidated Income Statement Data:            
Revenue 109,638
 (118) 109,520
 212,339
 (240) 212,099
Cost of revenue 37,386
 (30) 37,356
 73,530
 (88) 73,442
Income (loss) from operations 9,283
 (88) 9,195
 13,328
 (152) 13,176
Income (loss) before income taxes and equity in losses of unconsolidated investee 9,663
 (88) 9,575
 14,167
 (152) 14,015
(Benefit from) provision for income taxes (4,948) (28) (4,976) (6,886) (48) (6,934)
Net income (loss) 13,381
 (60) 13,321
 18,872
 (104) 18,768
Revenue Recognition
Revenue is recognized in an amount that reflects the consideration we expectthe Company expects to be entitled to in exchange for those goods or services. All revenue recognized in the income statement is considered to be revenue from contracts with customers.

22

Penumbra, Inc.
Notes to Condensed Consolidated Financial Statements
(unaudited)

The following table presents the Company’s revenues disaggregated by geography, based on the destination to which the Company ships its products, for the three and six months ended June 30, 2018March 31, 2019 and 20172018 was as follows (in thousands):
 Three Months Ended June 30, Six Months Ended June 30, Three Months Ended March 31,
 2018 2017 2018 2017 2019 2018
United States $71,279
 $53,420
 $137,080
 $101,907
 $82,511
 $65,801
Japan 10,614
 8,342
 21,296
 15,984
 9,522
 10,682
Other International 27,745
 18,827
 53,963
 35,911
 36,406
 26,218
Total $109,638
 $80,589
 $212,339
 $153,802
 $128,439
 $102,701
The following table presents the Company’s revenues disaggregated by product category, for the three and six months ended June 30, 2018March 31, 2019 and 20172018 was as follows (in thousands):
 Three Months Ended June 30, Six Months Ended June 30, Three Months Ended March 31,
 2018 2017 2018 2017 2019 2018
Neuro $74,196
 $56,203
 $145,624
 $106,452
 $81,471
 $71,433
Peripheral Vascular 35,442
 24,386
 66,715
 47,350
Vascular 46,968
 31,268
Total $109,638
 $80,589
 $212,339
 $153,802
 $128,439
 $102,701
Performance Obligations
Delivery of Penumbra products - Penumbra’sThe Company’s contracts with customers typically contain a single performance obligation, delivery of Penumbra products. Satisfaction of that performance obligation occurs when control of the promised goods transfers to the customer, which is generally upon shipment for non-consignment sale agreements and upon utilization for consignment sale agreements.
Payment terms - OurThe Company’s payment terms vary by the type and location of our customer. The timing between fulfillment of performance obligations and when payment is due is not significant and does not give rise to financing transactions. The Company did not have any contracts with significant financing components as of June 30, 2018March 31, 2019.
Product returns - The Company may allow customers to return products purchased at the Company’s discretion. The Company estimates the amount of its product sales that may be returned by its customers and records this estimate as a reduction of revenue in the period the related product revenue is recognized. The Company currently estimates product return liabilities using its own historic sales information, trends, industry data, and other relevant data points.
Warranties - PenumbraThe Company offers its standard warranty to all customers and it is not available for sale on a standalone basis. Penumbra’sThe Company’s standard warranty represents its guarantee that its products function as intended, are free from defects, and comply with agreed-upon specifications and quality standards. This assurance does not constitute a service and is not a separate performance obligation.
Transaction Price
Revenue is recorded at the net sales price, which includes estimates of variable consideration such as product returns utilizing historical return rates, rebates, discounts, and other adjustments to net revenue. To the extent the transaction price includes variable consideration, the Company estimates the amount of variable consideration that should be included in the transaction price. When determining if variable consideration should be constrained, management considers whether there are factors that could result in a significant reversal of revenue and the likelihood of a potential reversal.reversal. Variable consideration is included in revenue only to the extent that it is probable that a significant reversal of the revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved. These estimates are re-assessed each

24

Penumbra, Inc.
Notes to Condensed Consolidated Financial Statements
(unaudited)

reporting period as required. During the three months ended March 31, 2019, the Company made no changes in estimates for variable consideration. When the Company performs shipping and handling activities after control of goods is transferred to the customer, they are considered as fulfillment activities, and costs are accrued for when the related revenue is recognized. Taxes collected from customers relating to product sales and remitted to governmental authorities are excluded from revenues.

ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS.
The following discussion and analysis of our financial condition and results of operations should be read in conjunction with the unaudited condensed consolidated financial statements and the related notes thereto included elsewhere in this Quarterly Report on Form 10-Q and the audited consolidated financial statements and notes thereto and management’s discussion and analysis of financial condition and results of operations for the year ended December 31, 2017,2018, included in our Annual Report on Form 10-K filed with the Securities and Exchange Commission (“SEC”) on February 27, 2018.26, 2019.
This Quarterly Report on Form 10-Q contains “forward-looking statements” within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). In some cases, you can identify these statements by forward-looking words such as “may,” “will,” “expect,” “believe,” “anticipate,” “intend,” “could,” “should,” “estimate,” or “continue,” and similar expressions or variations. Such forward-looking statements are subject to risks, uncertainties and other factors that could cause actual results and the timing of certain events to differ materially from future results expressed or implied by such forward-looking statements. Factors that could cause or contribute to such differences include, but are not limited to, those identified below, and those discussed in the section titled “Risk Factors” included in our Annual Report on Form 10-K for the year ended December 31, 2017.2018. The forward-looking statements in this Quarterly Report on Form 10-Q represent our views as of the date of this Quarterly Report on Form 10-Q. Except as may be required by law, we assume no obligation to update these forward-looking statements or the reasons that results could differ from these forward-looking statements. You should, therefore, not rely on these forward-looking statements as representing our views as of any date subsequent to the date of this Quarterly Report on Form 10-Q.
Overview
Penumbra (“we,” “our,” “us,” “Penumbra,” and the “Company”) is a global healthcare company focused on innovative therapies. We design, develop, manufacture and market medical devices and have a broad portfolio of products that addresses challenging medical conditions and significant clinical needs across twoour major markets.
Our team focuses on developing, manufacturing and marketing products for use by specialist physicians including interventional neuroradiologists, neurosurgeons, interventional neurologists, interventional radiologists, interventional cardiologists and vascular surgeons. We design our products to provide these specialist physicians with a means to drive improved clinical outcomes, and weoutcomes. We believe that the cost-effectiveness of our products is attractive to our hospital customers.
Since our founding in 2004, we have invested heavily in our product development capabilities in our two keymajor markets: neuro and peripheral vascular. We launched our first neurovascularneuro product in 2007, our first peripheral vascular product in 2013 and our first neurosurgical product in 2014. We expect to continue to develop and build our portfolio of products based on our thrombectomy, embolization and access technologies. Generally, when we introduce a next generation product or a new product designed to replace a current product, sales of the earlier generation product or the product replaced decline. Our research and development activities are centered around the development of new products and clinical activities designed to support our regulatory submissions and demonstrate the effectiveness of our products.
To address the challenging and significant clinical needs of our two key markets, we developed products that fall into the following broad product offering families:
Our neuro products fall into four broad product families:
Neuro thrombectomy - the Penumbra System consisting ofdesigned for mechanical thrombectomy, including Penumbra JET and ACE reperfusion catheters, and separators, aspiration tubing, and aspiration pump, and the 3D revascularization device designed for mechanical thrombectomyRevascularization Device
Neuro embolization - Penumbra SMART COIL, Penumbra Coil 400 Penumbra SMART COIL and PX SLIM
Neuro access - delivery catheters, consisting of Neuron, Neuron MAX, Select, BENCHMARK and DDC
Neurosurgical - the Artemis Neuro Evacuation Device
Our peripheralvascular products fall into two broad product families:
Peripheral
Vascular thrombectomy - the Indigo System consisting ofdesigned for mechanical thrombectomy, including aspiration catheters, separators, aspiration pump and accessories
PeripheralVascular embolization - the Ruby Coil System, POD System POD(POD and Packing Coil,Coil) and the Penumbra LANTERN Delivery Microcatheter
We sell our products to hospitals primarily through our direct sales organization in the United States, most of Europe, Canada and Australia, as well as through distributors in select international markets. In the sixthree months ended June 30,March 31, 2019 and 2018, 35.8% and 2017, 35.4% and 33.7%35.9% of our revenue, respectively, was generated from customers located outside of the United States. Our

sales outside of the United States are denominated principally in the euro and Japanese yen, with some sales being denominated in other currencies. As a result, we have foreign exchange exposure, but do not currently engage in hedging.

We generated revenue of $212.3$128.4 million and $153.8$102.7 million for the sixthree months ended June 30,March 31, 2019 and 2018, and 2017, respectively, an increase of $58.5$25.7 million. We generated operating income of $13.3$11.2 million and $4.0 million for the sixthree months ended June 30,March 31, 2019 and March 31, 2018, and an operating loss of $3.4 million for the six months ended June 30, 2017.respectively.
Factors Affecting Our Performance
There are a number of factors that have impacted, and we believe will continue to impact, our results of operations and growth. These factors include: 
The rate at which we grow our salesforce and the speed at which newly hired salespeople become fully effective can impact our revenue growth or our costs incurred in anticipation of such growth.
Our industry is intensely competitive and, in particular, we compete with a number of large, well-capitalized companies. We must continue to successfully compete in light of our competitors’ existing and future products and their resources to successfully market to the specialist physicians who use our products.
We must continue to successfully introduce new products that gain acceptance with specialist physicians and successfully transition from existing products to new products, ensuring adequate supply. In addition, as we introduce new products, we generally hire and train additional personnel and build our inventory of components and finished goods in advance of sales, which may cause quarterly fluctuations in our operating results and financial condition.
Publications of clinical results by us, our competitors and other third parties can have a significant influence on whether, and the degree to which, our products are used by specialist physicians and the procedures and treatments those physicians choose to administer for a given condition.
The specialist physicians who use our products may not perform procedures during certain times of the year, such as those periods when they are at major medical conferences or are away from their practices for other reasons, the timing of which occurs irregularly during the year and from year to year.
Most of our sales outside of the United States are denominated in the local currency of the country in which we sell our products. As a result, our revenue from international sales can be significantly impacted by fluctuations in foreign currency exchange rates.
In addition, we have experienced and expect to continue to experience meaningful variability in our quarterly revenue, gross profit and gross margin percentage as a result of a number of factors, including, but not limited to: the number of available selling days, which can be impacted by holidays; the mix of products sold; the geographic mix of where products are sold; the demand for our products and the products of our competitors; the timing of or failure to obtain regulatory approvals or clearances for products; increased competition; the timing of customer orders; inventory write-offs due to obsolescence; costs, benefits and timing of new product introductions; costs, benefits and timing of the acquisition and integration of businesses and product lines we may acquire; the availability and cost of components and raw materials; and fluctuations in foreign currency exchange rates. We may experience quarters in which we have significant revenue growth sequentially followed by quarters of moderate or no revenue growth. Additionally, we may experience quarters in which operating expenses, in particular research and development expenses, fluctuate depending on the stage and timing of product development.
Components of Results of Operations
Revenue. We sell our products directly to hospitals and through distributors for use in procedures performed by specialist physicians to treat patients in two key markets: neuro and peripheral vascular disease. We sell our products through purchase orders, and we do not have long term purchase commitments from our customers. However, withRevenue from product sales is recognized either on the date of shipment or the date of receipt by the customer. With respect to products that we consign to hospitals, which primarily consist of coils, we recognize revenue at the time hospitals utilize products in a procedure. Revenue also includes shipping and handling costs that we charge to customers.
Cost of Revenue. Cost of revenue consists primarily of the cost of raw materials and components, personnel costs, including stock-based compensation, inbound freight charges, receiving costs, inspection and testing costs, warehousing costs, royalty expense, shipping and handling costs and other labor and overhead costs incurred in the manufacturing of products. We manufacture substantially all of our products in our manufacturing facility at our campus in Alameda, California.
Operating Expenses
Research and Development (R&D). R&D expenses primarily consist of product development, clinical and regulatory expenses, materials, depreciation and other costs associated with the development of our products. R&D expenses also include salaries,

benefits and other related costs, including stock-based compensation, for personnel and consultants. We expense R&D costs as they are incurred.
We expect our R&D expenses to continue to increase as we innovate and develop new products, add personnel, engage in ongoing clinical research and expand our information technologies.
Sales, General and Administrative (SG&A). SG&A expenses primarily consist of salaries, benefits and other related costs, including stock-based compensation, for personnel and consultants engaged in sales, marketing, finance, legal, compliance, administrative, facilities and information technology and human resource activities. Our SG&A expenses also include marketing trials, medical education, training, commissions, generally based on a percentage of sales, to direct sales representatives, amortization of acquired intangible assets and acquisition-related costs.
We expect our SG&A expenses to continue to increase as we expand our marketing programs, information technologies, operations and salesforce. Further, while the medical device excise tax was suspended for an additional two-year period commencing January 1, 2018, absent further legislative action, it will be reinstated in 2020.
Income Tax Expense. We are taxed at the rates applicable within each jurisdiction in which we operate. The composite income tax rate, tax provisions, deferred tax assets and deferred tax liabilities will vary according to the jurisdiction in which profits arise. Tax laws are complex and subject to different interpretations by management and the respective governmental taxing authorities, and require us to exercise judgment in determining our income tax provision, our deferred tax assets and deferred tax liabilities and the potential valuation allowance recorded against our net DTAs. Deferred tax assets and liabilities are determined using the enacted tax rates in effect for the years in which those tax assets are expected to be realized. A valuation allowance is established when it is more likely than not that the future realization of all or some of the DTAs will not be achieved.
Results of Operations
The following table sets forth the components of our condensed consolidated statements of operations in dollars and as a percentage of revenue for the periods presented:
Three Months Ended June 30, Six Months Ended June 30,Three Months Ended March 31,
2018 2017 2018 20172019 2018
(in thousands, except for percentages)(in thousands, except for percentages)
Revenue$109,638
 100.0 % $80,589
 100.0 % $212,339
 100.0 % $153,802
 100.0 %$128,439
 100.0 % $102,701
 100.0 %
Cost of revenue37,386
 34.1
 29,660
 36.8
 73,530
 34.6
 55,164
 35.9
44,529
 34.7
 36,144
 35.2
Gross profit72,252
 65.9
 50,929
 63.2
 138,809
 65.4
 98,638
 64.1
83,910
 65.3
 66,557
 64.8
Operating expenses:                      
Research and development8,193
 7.5
 8,094
 10.0
 16,206
 7.6
 15,128
 9.8
11,667
 9.1
 8,013
 7.8
Sales, general and administrative54,776
 50.0
 44,163
 54.8
 109,275
 51.5
 86,884
 56.5
61,091
 47.6
 54,499
 53.1
Total operating expenses62,969
 57.4
 52,257
 64.8
 125,481
 59.1
 102,012
 66.3
72,758
 56.6
 62,512
 60.9
Income (loss) from operations9,283
 8.5
 (1,328) (1.6) 13,328
 6.3
 (3,374) (2.2)
Income from operations11,152
 8.7
 4,045
 3.9
Interest income, net720
 0.7
 624
 0.8
 1,469
 0.7
 1,268
 0.8
733
 0.6
 749
 0.7
Other expense, net(340) (0.3) (214) (0.3) (630) (0.3) (563) (0.4)
Income (loss) before income taxes and equity in losses of unconsolidated investee9,663
 8.8
 (918) (1.1) 14,167
 6.7
 (2,669) (1.7)
(Benefit from) provision for income taxes(4,948) (4.5) 482
 0.6
 (6,886) (3.2) 1,837
 1.2
Other income (expense), net24
 
 (290) (0.3)
Income before income taxes and equity in losses of unconsolidated investee11,909
 9.3
 4,504
 4.4
Provision for (benefit from) income taxes1,455
 1.1
 (1,938) (1.9)
Income before equity in losses of unconsolidated investee14,611
 13.3
 (1,400) (1.7) $21,053
 9.9 % (4,506) (2.9)10,454
 8.1
 6,442
 6.3
Equity in losses of unconsolidated investee(1,230) (1.1) (158) (0.2) $(2,181) (1.0)% (158) (0.1)
 
 (951) (0.9)
Net income (loss)$13,381
 12.2 % $(1,558) (1.9)% $18,872
 8.9 % $(4,664) (3.0)%
Consolidated net income$10,454
 8.1 % $5,491
 5.3 %
Net loss attributable to non-controlling interest(244) (0.2) 
 
Net income attributable to Penumbra, Inc.$10,698
 8.3 % $5,491
 5.3 %

Three Months Ended June 30, 2018March 31, 2019 Compared to the Three Months Ended June 30, 2017March 31, 2018
Revenue
Three Months Ended June 30, ChangeThree Months Ended March 31, Change
2018 2017 $ %2019 2018 $ %
(in thousands, except for percentages)(in thousands, except for percentages)
Neuro$74,196
 $56,203
 $17,993
 32.0%$81,471
 $71,433
 $10,038
 14.1%
Peripheral Vascular35,442
 24,386
 11,056
 45.3%
Vascular46,968
 31,268
 15,700
 50.2%
Total$109,638
 $80,589
 $29,049
 36.0%$128,439
 $102,701
 $25,738
 25.1%

Revenue increased $29.0$25.7 million, or 36.0%25.1%, to $109.6$128.4 million in the three months ended June 30, 2018,March 31, 2019, from $80.6$102.7 million in the three months ended June 30, 2017.March 31, 2018. Our revenue growth resulted from further market penetration of our existing products and sales of new products. Sales within our neuro and peripheral vascular businesses accounted for slightly more thanapproximately 40% and 60% and slightly less than 40% of the revenue increase, respectively, in the three months ended June 30, 2018.March 31, 2019.
Revenue from our neuro products increased $18.0$10.0 million, or 32.0%14.1%, to $74.2$81.5 million in the three months ended June 30, 2018,March 31, 2019, from $56.2$71.4 million in the three months ended June 30, 2017. March 31, 2018. This was primarily attributable to increased sales of our Penumbra System, and neuro access products, which accounted for slightly more than 75% and approximately 15%90% of the total change in neuro revenue increase, respectively. . Our neuro product sales experienced strong momentum due to further market penetration and growth in the market for endovascular treatment of stroke. The overall market growth hasstroke, which led to increasesan increase in the number of procedures performed by specialist physicians using these products. This growth was partially offset by a decrease in sales of our neuro embolization products,. Further, there was greater which decreased by approximately 20% of the total change in neuro revenue, as demand for our neuro accessembolization products which can fluctuatefluctuates from period to period due to the number of procedures performed. Prices for our neuro products remained substantially unchanged during the period.
Revenue from our peripheral vascular products increased $11.1$15.7 million, or 45.3%50.2%, to $35.4$47.0 million in the three months ended June 30, 2018,March 31, 2019, from $24.4$31.3 million in the three months ended June 30, 2017.March 31, 2018. This increase was driven by sales of our Indigo System products which accounted for approximately 45%half of the peripheral vascular revenue increase in the three months ended June 30, 2018.March 31, 2019. This was primarily attributable to further market penetration which led to increases in the number of procedures performed by specialist physicians using our products. Prices for our peripheral vascular products remained substantially unchanged during the period.
Revenue by Geographic Area
The following table presents revenue by geographic area and from countries that exceeded 10% of our total revenue, based on our customers’ shipping destinations:
 Three Months Ended June 30, Change Three Months Ended March 31, Change
 2018 2017 $ % 2019 2018 $ %
 (in thousands, except for percentages) (in thousands, except for percentages)
United States $71,279
 65.0% $53,420
 66.3% $17,859
 33.4% $82,511
 64.2% $65,801
 64.1% $16,710
 25.4 %
Japan 10,614
 9.7% 8,342
 10.4% 2,272
 27.2% 9,522
 7.4% 10,682
 10.4% (1,160) (10.9)%
Other International 27,745
 25.3% 18,827
 23.3% 8,918
 47.4% 36,406
 28.4% 26,218
 25.5% 10,188
 38.9 %
Total $109,638
 100.0% $80,589
 100.0% $29,049
 36.0% $128,439
 100.0% $102,701
 100.0% $25,738
 25.1 %
Revenue from sales in international markets increased $11.2$9.0 million, or 41.2%24.5%, to $38.4$45.9 million in the three months ended June 30, 2018,March 31, 2019, from $27.2$36.9 million in the three months ended June 30, 2017.March 31, 2018. Revenue from international sales represented 35.0%35.8% and 33.7%35.9% of our total revenue for the three months ended June 30,March 31, 2019 and 2018, and 2017, respectively.

Gross Margin
Three Months Ended June 30, ChangeThree Months Ended March 31, Change
2018 2017 $ %2019 2018 $ %
(in thousands, except for percentages)(in thousands, except for percentages)
Cost of revenue$37,386
 $29,660
 $7,726
 26.0%$44,529
 $36,144
 $8,385
 23.2%
Gross profit$72,252
 $50,929
 $21,323
 41.9%$83,910
 $66,557
 $17,353
 26.1%
Gross margin %65.9% 63.2%    65.3% 64.8%    
Gross margin increased remained relatively flat, increasing by 2.70.5 percentage points to 65.9%65.3% in the three months ended June 30, 2018,March 31, 2019, from 63.2%64.8% in the three months ended June 30, 2017. The increase in gross margin was primarily due to a more favorable product mix.March 31, 2018.
Research and Development (R&D)
Three Months Ended June 30, ChangeThree Months Ended March 31, Change
2018 2017 $ %2019 2018 $ %
(in thousands, except for percentages)(in thousands, except for percentages)
R&D$8,193
 $8,094
 $99
 1.2%$11,667
 $8,013
 $3,654
 45.6%
R&D as a percentage of revenue7.5% 10.0%    9.1% 7.8%    

R&D expenses increased by $0.1$3.7 million, or 1.2%45.6%, to $8.2$11.7 million in the three months ended June 30, 2018,March 31, 2019, from $8.1$8.0 million in the three months ended June 30, 2017.March 31, 2018. The increase was primarily due to a $0.9$1.6 million increase in product development and testing costs and a $1.4 million increase in personnel-related expenses primarily due to an increase in headcount to support our growth. This was partially offset by a $0.7 million decrease in product development, testing and clinical trial cost.
We have made investments, and plan to continue to make investments, in the development of our products, which includesmay include hiring additional research and development employees. As a result, we expect operating expenses to increase in the near term. In addition, we have experienced in the past, and may continue to experience in the future, variability in expenses incurred due to the timing and costs of clinical trials.
Sales, General and Administrative (SG&A)
Three Months Ended June 30, ChangeThree Months Ended March 31, Change
2018 2017 $ %2019 2018 $ %
(in thousands, except for percentages)(in thousands, except for percentages)
SG&A$54,776
 $44,163
 $10,613
 24.0%$61,091
 $54,499
 $6,592
 12.1%
SG&A as a percentage of revenue50.0% 54.8%    47.6% 53.1%    
SG&A expenses increased by $10.6$6.6 million, or 24.0%12.1%, to $54.8$61.1 million in the three months ended June 30, 2018,March 31, 2019, from $44.2$54.5 million in the three months ended June 30, 2017.March 31, 2018. The increase was primarily due to a $7.2$5.0 million increase in personnel-related expenses largely attributable to an increase in headcount to support our growth a $1.2 million increase related to travel-related expenses and a $0.5$1.0 million increaserelated to marketing events.
As we continue to invest in our growth, we have expanded and expect to continue to expand our sales, marketing, general and administrative teams through the hiring of additional employees. In the current quarter, the majority of our SG&A hiring took place towards the end of the period and therefore the full quarter impact is not reflected in our current period expenses. As a result, we expect operating expenses to increase in the near term. In addition, we have experienced in the past, and may continue to experience in the future, variability in expenses incurred due to the timing and costs of investments in infrastructure to support the business.
(Benefit from)
Provision for (Benefit from) Income Taxes
Three Months Ended June 30, ChangeThree Months Ended March 31, Change
2018 2017 $ %2019 2018 $ %
(in thousands, except for percentages)(in thousands, except for percentages)
(Benefit from) provision for income taxes$(4,948) $482
 $(5,430) (1,126.6)%
Provision for (benefit from) income taxes$1,455
 $(1,938) $3,393
 (175.1)%
Effective tax rate(51.2)% (52.5)%    12.2% (43.0)%    

Our provision for our income taxes changed by $5.4was $1.5 million to a $4.9 million tax benefit infor the three months ended June 30, 2018, from $0.5March 31, 2019, compared to $1.9 million of tax provision inbenefit for the three months ended June 30, 2017.March 31, 2018. Our effective tax rate changed to (51.2)12.2% for the three months ended March 31, 2019, compared to (43.0)% for the three months ended June 30, 2018, compared to (52.5)%March 31, 2018. Our provision for the three months ended June 30, 2017. The tax benefit from(benefit from) income taxes for the three months ended June 30,March 31, 2019 and 2018 waswere primarily due to the inclusion ofincome taxes attributable to our worldwide profits offset by excess tax benefits from stock-based compensation attributable to our U.S. jurisdiction, offset byjurisdiction. Our change in rate was primarily attributable to income taxes attributable to ouron higher worldwide profits. Theprofits combined with lower stock-based compensation excess tax provision forbenefit generated in the three months ended June 30, 2017 was primarily dueMarch 31, 2019, when compared to income taxes attributable to our foreign jurisdictions, and the tax impact associated with intra-entity asset transfers. The tax benefits attributable to our U.S. jurisdiction were excluded from our tax provision for the three months ended June 30, 2017 due to the partial valuation allowance recorded against our domestic DTAs as of June 30, 2017.
A valuation allowance is established when it is more likely than not that the future realization of all or some of the DTAs will not be achieved. Valuation allowances can be affected by changes to tax laws, statutory tax rates, and projections of future taxable income. Changes to the valuation allowance could cause us to experience an effective tax rate significantly different from previous periods.
Six Months Ended June 30, 2018 Compared to the Six Months Ended June 30, 2017March 31, 2018.
Revenue
 Six Months Ended June 30, Change
 2018 2017 $ %
 (in thousands, except for percentages)
Neuro$145,624
 $106,452
 $39,172
 36.8%
Peripheral Vascular66,715
 47,350
 19,365
 40.9%
Total$212,339
 $153,802
 $58,537
 38.1%
Revenue increased $58.5 million, or 38.1%, to $212.3 million in the six months ended June 30, 2018, from $153.8 million in the six months ended June 30, 2017. Our revenue growth resulted from further market penetration of our existing products and sales of new products. Increased sales within our neuro and peripheral vascular businesses accounted for approximately two-thirds and one-thirds of the revenue increase, respectively, in the six months ended June 30, 2018.
Revenue from our neuro products increased $39.2 million, or 36.8%, to $145.6 million in the six months ended June 30, 2018, from $106.5 million in the six months ended June 30, 2017. This was primarily attributable to increased sales of our Penumbra System and neuro access products which accounted for slightly more than 75% and approximately 15% of the neuro revenue increase, respectively. Our neuro product sales experienced strong momentum due to further market penetration and growth in the market for endovascular treatment of stroke. The overall market growth has led to increases in the number of procedures performed by specialist physicians using our products. Further, there was greater demand for our neuro access products, which can fluctuate from period to period due to the number of procedures performed. Prices for our neuro products remained substantially unchanged during the period.
Revenue from our peripheral vascular products increased $19.4 million, or 40.9%, to $66.7 million in the six months ended June 30, 2018, from $47.4 million in the six months ended June 30, 2017. This was driven by increased sales of Indigo System products, which accounted for slightly less than half of the peripheral vascular revenue increase. This increase was driven by further market penetration which led to increases in the number of procedures performed by specialist physicians using our products. Prices for our peripheral vascular products remained substantially unchanged during the period.
Revenue by Geographic Area
The following table presents revenue by geographic area and from countries that exceeded 10% of our total revenue, based on our customer’s shipping destination, for the six months ended June 30, 2018 and 2017:
  Six Months Ended June 30, Change
  2018 2017 $ %
  (in thousands, except for percentages)
United States $137,080
 64.6% $101,907
 66.3% $35,173
 34.5%
Japan 21,296
 10.0% 15,984
 10.4% 5,312
 33.2%
Other International 53,963
 25.4% 35,911
 23.3% 18,052
 50.3%
Total $212,339
 100.0% $153,802
 100.0% $58,537
 38.1%

Revenue from sales in international markets increased $23.4 million, or 45.0%, to $75.3 million in the six months ended June 30, 2018, from $51.9 million in the six months ended June 30, 2017. Revenue from international sales represented 35.4% and 33.7% of our total revenue for the six months ended June 30, 2018 and 2017, respectively.
Gross Margin
 Six Months Ended June 30, Change
 2018 2017 $ %
 (in thousands, except for percentages)
Cost of revenue$73,530
 $55,164
 $18,366
 33.3%
Gross profit$138,809
 $98,638
 $40,171
 40.7%
Gross margin %65.4% 64.1%    
Gross margin increased 1.3 percentage points to 65.4% in the six months ended June 30, 2018, from 64.1% in the six months ended June 30, 2017. The increase in gross margin was primarily due to a more favorable product mix.
Research and Development (R&D)
 Six Months Ended June 30, Change
 2018 2017 $ %
 (in thousands, except for percentages)
R&D$16,206
 $15,128
 $1,078
 7.1%
R&D as a percentage of revenue7.6% 9.8%    
R&D expenses increased by $1.1 million, or 7.1%, to $16.2 million in the six months ended June 30, 2018, from $15.1 million in the six months ended June 30, 2017. The increase was primarily a $2.0 million increase in personnel-related expenses primarily due to an increase in headcount to support our growth. This was partially offset by a $0.7 million decrease in product development, testing and clinical trial costs and a $0.4 million decrease in consultant and contractor expenses.
We have made investments, and plan to continue to make investments, in the development of our products, which includes hiring additional research and development employees. As a result, we expect operating expenses to increase in the near term. In addition, we have experienced in the past, and may continue to experience in the future, variability in expenses incurred due to the timing and costs of clinical trials.
Sales, General and Administrative (SG&A)
 Six Months Ended June 30, Change
 2018 2017 $ %
 (in thousands, except for percentages)
SG&A$109,275
 $86,884
 $22,391
 25.8%
SG&A as a percentage of revenue
51.5% 56.5%    
SG&A expenses increased by $22.4 million, or 25.8%, to $109.3 million in the six months ended June 30, 2018, from $86.9 million in the six months ended June 30, 2017. The increase was primarily due to a $15.8 million increase in personnel-related expense due to an increase in headcount to support our growth and a $2.3 million increase in travel-related expenses.
As we continue to invest in our growth, we have expanded and expect to continue to expand our sales, marketing, general and administrative teams through the hiring of additional employees. In the current quarter, the majority of our SG&A hiring took place towards the end of the period and therefore the full quarter impact is not reflected in our current period expenses. As a result, we expect operating expenses to increase in the near term. In addition, we have experienced in the past, and may continue to experience in the future, variability in expenses incurred due to the timing and costs of investments in infrastructure to support the business.

(Benefit from) Provision for Income Taxes
 Six Months Ended June 30, Change
 2018 2017 $ %
 (in thousands, except for percentages)
(Benefit from) provision for income taxes$(6,886) $1,837
 $(8,723) (474.9)%
Effective tax rate(48.6)% (68.8)%    
Our provision for income taxes changed by $8.7 million, to a $6.9 million tax benefit in the six months ended June 30, 2018, from $1.8 million of tax provision in the six months ended June 30, 2017. Our effective tax rate changed to (48.6)% for the six months ended June 30, 2018, compared to (68.8)% for the six months ended June 30, 2017. The tax benefit from income taxes for the six months ended June 30, 2018, was primarily due to the inclusion of excess tax benefits from stock-based compensation attributable to our U.S. jurisdiction, offset by income taxes attributable to our worldwide profits. The tax provision for the six months ended June 30, 2017 was primarily due to income taxes attributable to our foreign jurisdictions, and the tax impact from recognizing the deferred tax assets associated with intra-entity asset transfers. The tax benefits attributable to our U.S. jurisdiction were excluded from our tax provision for the six months ended June 30, 2017 due to the partial valuation allowance recorded against our domestic DTAs as of June 30, 2017.
A valuation allowance is established when it is more likely than not that the future realization of all or some of the DTAs will not be achieved. Valuation allowances can be affected by changes to tax laws, statutory tax rates, and projections of future taxable income. Changes to the valuation allowance could cause us to experience an effective tax rate significantly different from previous periods.
Prospectively, our effective tax rate will likely be driven by (1) permanent differences in taxable income for tax and financial reporting purposes, (2) tax expense attributable to our foreign jurisdictions,worldwide profits, and (3) discrete tax adjustments such as excess tax benefits related to stock basedstock-based compensation. Our income tax provision is subject to volatility as the amount of excess tax benefits can fluctuate from period to period based on the price of our stock, the volume of share-based grants settled or vested, and the fair value assigned to equity awards under U.S. GAAP.

Liquidity and Capital Resources
As of June 30, 2018,March 31, 2019, we had $342.8$353.7 million in working capital, which included $59.7$95.6 million in cash and cash equivalents and $147.2$99.2 million in marketable investments. As of June 30, 2018,March 31, 2019, we held approximately 32.0%27.8% of our cash and cash equivalents in foreign entities.
In March 2017, we issued and sold an aggregate of 1,495,000 shares of our common stock at public offering price of $76.00 per share, less the underwriters’ discounts and commissions, pursuant to an underwritten public offering. We received approximately $106.3 million in net cash proceeds after deducting underwriting discounts and commissions of $6.8 million and other offering expenses of $0.5 million. We intendwill continue to use the net proceeds from this offering for general corporate purposes, including working capital, continued development of our products, including research and development and clinical trials, potential acquisitions and other business opportunities. Pending the use of the net proceeds from this offering, we are investing the net proceeds in investment grade, interest bearing securities.
In addition to our existing cash and cash equivalents and marketable investment balances, our principal source of liquidity is our accounts receivable. We believe our sources of liquidity will be sufficient to meet our liquidity requirements for at least the next 12 months. Our principal liquidity requirements are to fund our operations, includingwhich includes, but is not limited to, maintaining sufficient levels of inventory to meet the anticipated demand of our customers, funding research and development activities and funding our capital expenditures and contingent consideration.expenditures. We may also lease or purchase additional facilities to facilitate our growth. We expect to continue to make investments as we launch new products, expand our manufacturing operations and further expand into international markets. We may, however, require or elect to secure additional financing as we continue to execute our business strategy. If we require or elect to raise additional funds, we may do so through equity or debt financing, which may not be available on favorable terms, which could result in dilution to our stockholders and could require us to agree to covenants that limit our operating flexibility.

The following table summarizes our cash and cash equivalents, marketable investments and selected working capital data as of June 30, 2018March 31, 2019 and December 31, 2017:2018:
June 30,
2018
 December 31,
2017
March 31,
2019
 December 31,
2018
(in thousands)(in thousands)
Cash and cash equivalents$59,705
 $50,637
$95,606
 $67,850
Marketable investments147,185
 163,954
99,241
 133,039
Accounts receivable, net74,059
 58,007
94,679
 81,896
Accounts payable7,432
 6,757
7,692
 8,176
Accrued liabilities42,255
 44,825
58,032
 57,886
Working capital(1)
342,812
 330,652
353,674
 344,664
__________________
(1) 
Working capital consists of total current assets less total current liabilities.
The following table sets forth, for the periods indicated, our beginning balance of cash and cash equivalents, net cash flows provided by (used in) operating, investing and financing activities and our ending balance of cash and cash equivalents:
Six Months Ended June 30,Three Months Ended March 31,
2018 20172019 2018
(in thousands)(in thousands)
Cash and cash equivalents and restricted cash at beginning of period$50,637
 $13,236
$67,850
 $50,637
Net cash provided by operating activities10,832
 2,844
Net cash (used in) provided by operating activities(2,068) 10,708
Net cash provided by (used in) investing activities10,637
 (37,440)31,855
 (2,187)
Net cash (used in) provided by financing activities(11,936) 102,614
Net cash used in financing activities(1,710) (6,744)
Cash and cash equivalents and restricted cash at end of period59,705
 78,395
95,606
 52,805
Net Cash (Used In) Provided byBy Operating Activities
Net cash (used in) provided by operating activities consists primarily of net income adjusted for certain non-cash items (including depreciation and amortization, amortization of premium on marketable investments, stock-based compensation expense, loss on non-marketable equity investments, provision for doubtful accounts, inventory write-offs and write-downs, changes in deferred tax balances and changes in the fair value of contingent consideration), and the effect of changes in working capital and other activities.

Net cash provided byused in operating activities was $10.8$2.1 million during the sixthree months ended June 30, 2018March 31, 2019 and consisted of a consolidated net income of $18.9$10.5 million and non-cash items of $8.5$9.0 million, offset by net changes in operating assets and liabilities of $16.6$21.6 million. The change in operating assets and liabilities includes an increase in accounts receivable of $16.3$13.4 million, and an increase in inventories of $3.9$6.7 million to support our revenue growth and , partially offset by an increase in accrued expenses and other non-current liabilities of $1.6 million, a decrease in prepaid expenses and other current and non-current assets of $1.4 million and an increase in accounts payable of $0.6 million as a result of the growth in our business activities.$1.5 million.
Net cash provided by operating activities was $2.8$10.7 million during the sixthree months ended June 30, 2017March 31, 2018 and consisted of net lossincome of $4.7$5.5 million and non-cash items of $11.3$5.4 million, offset by net changes in operating assets and liabilities of $3.80.2 million. The change in operating assets and liabilities include the increase in inventories of $6.8 million to support our revenue growth andincludes an increase in accounts receivable of $4.66.1 million, partially offset by a decrease in prepaid expenses and other current and non-current assets of $3.0 million, partially offset by an increase in accrued expenses and other non-current liabilities of $4.42.1 million,, a decrease in prepaid expenses and other current and non-current assets of $2.9 million and an increase in accounts payable of $0.3$0.6 million, as a result of the growth in our business activities.activities and a decrease in inventories of $0.2 million.
Net Cash Provided By (Used In) Investing Activities
Net Cash Used in Investing Activities
Net cash used inprovided by (used in) investing activities relates primarily to proceeds from maturities and sales of marketable investments, partially offset by purchases of marketable investments, capital expenditures and contributions towards non-marketable investments, offset by proceeds from sales or maturities of marketable investments.
Net cash provided by investing activities was $10.6$31.9 million during the sixthree months ended June 30, 2018March 31, 2019 and consisted of proceeds from maturities and sales of marketable investments net of purchases, of $16.6$34.3 million, partially offset by capital expenditures of $5.1 million and contributions to non-marketable investments of $0.9$2.5 million.

Net cash used in investing activities was $37.4$2.2 million during the sixthree months ended June 30, 2017March 31, 2018 and consisted of net purchases from sales and maturities of marketable investments of$26.5 million, capital expenditures of $2.8 million and contributions towards $5.4 million, purchase
of non-marketable investments of $5.10.4 million, and deposit payments for acquisitionpartially offset by proceeds from maturities of marketable investments, net of purchases, of$0.51.0 million.
Net Cash (Used in) Provided byUsed In Financing Activities
Net cash used in and provided by financing activities primarily relates to capital raising activities through equitypayments of employee taxes related to vested restricted stock and restricted stock units and certain acquisition-related payments.payments, partially offset by proceeds from exercises of stock options.
Net cash used in financing activities was $11.9$1.7 million during the sixthree months ended June 30, 2018March 31, 2019 and primarily consisted of $13.8$2.1 million of payments of employee taxes related to vested restricted stock and restricted stock units and $4.4$0.7 million ofrelated to contingent consideration payments made in 2018the first quarter of 2019 in connection with our acquisition in 2017. This was partially offset by proceeds from issuance of stock under our employee stock purchase plan of $3.6 million and proceeds from exercises of stock options of $3.2$1.1 million.
Financing activities in the sixthree months ended June 30, 2017 providedMarch 31, 2018 used net cash of $102.6$6.7 million due to proceeds from issuance$4.3 million of common stock netpayments made in the first quarter of issuance cost2018 in connection with our acquisition in 2017 and $3.5 million of $106.3 million, proceeds from issuance of stock under our employee stock purchase plan of $2.9 million, and proceeds from exercises of stock options of $2.6 million. This was partially offset by paymentpayments of employee taxes related to vested restricted stock units and restricted stock. This was partially offset by proceeds from exercises of $9.2stock options of $1.3 million.
Contractual Obligations and Commitments
There have been no other material changes to our contractual obligations and commitments as of June 30, 2018March 31, 2019 from those disclosed in our Annual Report on Form 10-K for the year ended December 31, 2017.2018.
Off-Balance Sheet Arrangements
We do not have any significant off-balance sheet arrangements or holdings in variable interest entities.
Critical Accounting Policies and Estimates
We have prepared our financial statements in accordance with U.S. GAAP. Our preparation of these financial statements requires us to make estimates, assumptions, and judgments that affect the reported amounts of assets, liabilities, expenses, and related disclosures at the date of the financial statements, as well as revenue and expenses recorded during the reporting periods. We evaluate our estimates and judgments on an ongoing basis. We base our estimates on historical experience and on various other factors that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. Actual results could therefore differ materially from these estimates under different assumptions or conditions.
There have been no material changes to our critical accounting policies from those described in “Management’s Discussion and Analysis of Financial Condition and Results of Operations” included in our Annual Report on Form 10-K for the year

ended December 31, 2017,2018, other than the adoption of Accounting Standards Codification 606(“ASC”) 842 during the first quarter of 2018.2019. The impact of adoption and its effects on our accounting policies and estimates are described in Note 2.“2. Summary of Significant Accounting PoliciesPolicies” and Note “13. Revenues8. Leasesto our condensed consolidated financial statements in Part I, Item 1 of this Quarterly Report on Form 10-Q.
Recently Issued Accounting Standards
For information with respect to recently issued accounting standards and the impact of these standards on our condensed consolidated financial statements, see Note “2. Summary of Significant Accounting Policies” to our condensed consolidated financial statements in Part I, Item 1 of this Quarterly Report on Form 10-Q.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK.
We are exposed to various market risks, which may result in potential losses arising from adverse changes in market rates, such as interest rates and foreign exchange rates. We do not enter into derivatives or other financial instruments for trading or speculative purposes and do not believe we are exposed to material market risk with respect to our cash and cash equivalents and/or our marketable investments.
Interest Rate Risk. We had cash and cash equivalents of $59.7$95.6 million as of June 30, 2018,March 31, 2019, which consisted of funds held in general checking and savings accounts. In addition, we had marketable investments of $147.2$99.2 million, which consisted primarily of commercial paper, corporate bonds, non-U.S. government debt securities, U.S. agency and government sponsored securities, U.S. states and municipalities and U.S. Treasury. Our investment policy is focused on the preservation of capital and supporting our liquidity needs. Under the policy, we invest in highly rated securities, while limiting the amount of credit exposure to any one issuer other than the U.S. government. We do not invest in financial instruments for trading or speculative purposes, nor do we use leveraged financial instruments. We utilize external investment managers who adhere to the guidelines of our investment policy. A hypothetical 100 basis point change in interest rates would not have a material impact on the value of our cash and cash equivalents or marketable investments.
Foreign Exchange Risk Management. We operate in countries other than the United States, and, therefore, we are exposed to foreign currency risks. We bill most sales outside of the United States in local currencies, primarily euro and Japanese yen, with some sales being denominated in other currencies. We expect that the percentage of our sales denominated in foreign currencies may increase in the foreseeable future as we continue to expand into international markets. When sales or expenses are not denominated in U.S. dollars, a fluctuation in exchange rates could affect our net income. We do not believe our net income would be materially impacted by an immediate 10% adverse change in foreign exchange rates. We do not currently hedge our exposure to foreign currency exchange rate fluctuations; however, we may choose to hedge our exposure in the future.
We do not believe that inflation and changes in prices had a significant impact on our results of operations for any periods presented on our condensed consolidated financial statements.

ITEM 4. CONTROLS AND PROCEDURES.
Evaluation of Disclosure Controls and Procedures
An evaluation as of June 30, 2018March 31, 2019 was carried out under the supervision and with the participation of our management, including our principal executive officer and principal financial officer, of the effectiveness of our “disclosure controls and procedures,” which are defined in Rule 13a-15(e) under the Securities Exchange Act of 1934, as amended (“the Exchange Act”), as controls and other procedures of a company that are designed to ensure that the information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported, within the time periods specified in the Securities and Exchange Commission’s rules and forms, and that such information is accumulated and communicated to the company’s management, including its principal executive officer and principal financial officer, as appropriate, to allow timely decisions regarding required disclosure. Based upon that evaluation, our principal executive officer and principal financial officer concluded that our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) were effective at June 30, 2018.March 31, 2019.
Changes in Internal Control Over Financial Reporting
There was no change in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) that occurred during the quarterly period ended June 30, 2018March 31, 2019 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.
Limitations on the Effectiveness of Controls
A control system, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met. Because of inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues, if any, within a company have been detected. Accordingly, our disclosure controls and procedures are designed to provide reasonable, not absolute, assurance that the objectives of our disclosure control system are met and, as set forth above, our principal executive officer and principal financial officer have concluded, based on their evaluation as of the end of the period covered by this report, that our disclosure controls and procedures were effective to provide reasonable assurance that the objectives of our disclosure control system were met.


PART II - OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS.
None.

ITEM 1A. RISK FACTORS.
There have been no material changes to our risk factors reported or new factors identified since the filing of our Annual Report on Form 10-K for the year ended December 31, 2017,2018, which was filed with the SEC on February 27, 2018.

26, 2019.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS.
Issuer Purchases of Equity Securities
Period 
(a)
Total Number of Shares Purchased(1)
 
(b)
Average Price Paid per Share
 
(c)
Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs
 
(d)
Maximum Dollar Value of Shares of Shares that May Yet be Purchased Under the Plans or Programs
April 1, 2018 - April 30, 2018 79,612
 126.45
 
 
May 1, 2018 - May 31, 2018 
 
 
 
June 1, 2018 - June 30, 2018 
 
 
 
Total 79,612
 126.45
 
 
(1)During the three months ended June 30, 2018, the Company withheld 79,612 shares of restricted stock at an aggregate cost of approximately $10,066,937, as permitted by the applicable equity award agreements, to satisfy employee tax withholding requirements related to the vesting of restricted stock awards.None.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES.
None.

ITEM 4. MINE SAFETY DISCLOSURE.
None.

ITEM 5. OTHER INFORMATION.
None.


ITEM 6. EXHIBITS.
Exhibit Number Description Form File No. Exhibit(s) Filing Date
 Certification of Principal Executive Officer Required Under Rule 13a-14(a) and 15d-14(a) of the Securities Exchange Act of 1934, as amended.        
 Certification of Principal Financial Officer Required Under Rule 13a-14(a) and 15d-14(a) of the Securities Exchange Act of 1934, as amended.        
 Certification of Principal Executive Officer and Principal Financial Officer Required Under Rule 13a-14(b) of the Securities Exchange Act of 1934, as amended, and 18 U.S.C. §1350.        
101* The following materials from the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2018March 31, 2019 formatted in Extensible Business Reporting Language (XBRL) include:includes: (i) Condensed Consolidated Balance Sheets as of June 30, 2018March 31, 2019 and December 31, 2017,2018, (ii) Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) for the three and six months ended June 30,March 31, 2019 and 2018, (ii) Condensed Consolidated Statements of Comprehensive Income for the three months ended March 31, 2019 and 2017,2018, (iii) Condensed Consolidated Statements of Stockholders’ Equity for the three months ended March 31, 2019 and 2018, (iv) Condensed Consolidated Statements of Cash Flows for the sixthree months ended June 30,March 31, 2019 and 2018, and 2017, and (iv)(v) Notes to Condensed Consolidated Financial Statements.        
* Filed herewith.    
** Furnished herewith.

SIGNATURES
 
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
 
  PENUMBRA, INC.
Date: AugustMay 7, 20182019  
 By:/s/ Sri Kosaraju
  Sri Kosaraju
  Chief Financial Officer and Head of Strategy
  (Principal Financial and Accounting Officer)

38