PagerDuty (PD) 10-Q 6 Dec 19 2020 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Oct. 31, 2019	Nov. 29, 2019
Cover page.
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Oct. 31, 2019
Document Transition Report	false
Entity File Number	001-38856
Entity Registrant Name	PAGERDUTY, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	27-2793871
Entity Address, Address Line One	600 Townsend St.
Entity Address, Address Line Two	Suite 200
Entity Address, City or Town	San Francisco
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94103
City Area Code	844
Local Phone Number	800-3889
Title of 12(b) Security	Common Stock, $0.000005 par value
Trading Symbol	PD
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		77,230,071
Entity Central Index Key	0001568100
Current Fiscal Year End Date	--01-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Amendment Flag	false

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Oct. 31, 2019	Jan. 31, 2019
Current assets:
Cash and cash equivalents	$ 176,347	$ 127,875
Accounts receivable, net of allowance for doubtful accounts of $1,024 and $2,360 as of October 31, 2019 and January 31, 2019, respectively	29,205	33,538
Investments	169,744	0
Deferred contract costs, current	8,251	6,002
Prepaid expenses and other current assets	9,985	5,422
Total current assets	393,532	172,837
Property and equipment, net	10,031	5,772
Deferred contract costs, non-current	14,667	11,470
Other assets	1,767	7,155
Total assets	419,997	197,234
Current liabilities:
Accounts payable	5,254	7,657
Accrued expenses and other current liabilities	6,827	7,145
Accrued compensation	15,669	10,050
Deferred revenue, current	78,582	63,957
Total current liabilities	106,332	88,809
Deferred revenue, non-current	2,042	147
Other liabilities	7,132	4,185
Total liabilities	115,506	93,141
Commitments and contingencies (Note 7)
Redeemable convertible preferred stock	0	173,023
Stockholders’ equity (deficit):
Common stock	0	0
Additional paid-in capital	473,308	59,938
Accumulated other comprehensive loss	(50)	0
Accumulated deficit	(168,767)	(128,868)
Total stockholders’ equity (deficit)	304,491	(68,930)
Total liabilities, redeemable convertible preferred stock and stockholders’ equity (deficit)	$ 419,997	$ 197,234

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Oct. 31, 2019	Jan. 31, 2019
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 1,024	$ 2,360

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Income Statement And Statement Of Comprehensive Income [Abstract]
Revenue	$ 42,750	$ 31,229	$ 120,425	$ 83,993
Cost of revenue	6,634	4,599	18,226	12,396
Gross profit	36,116	26,630	102,199	71,597
Operating expenses:
Research and development	12,619	14,578	35,160	30,101
Sales and marketing	27,425	18,738	72,378	47,351
General and administrative	12,765	9,264	38,464	30,052
Total operating expenses	52,809	42,580	146,002	107,504
Loss from operations	(16,693)	(15,950)	(43,803)	(35,907)
Interest income	1,427	318	4,283	596
Other income, net	245	372	346	1,087
Loss before provision for income taxes	(15,021)	(15,260)	(39,174)	(34,224)
Provision for income taxes	(244)	(115)	(725)	(310)
Net loss	(15,265)	(15,375)	(39,899)	(34,534)
Comprehensive loss:
Unrealized loss on investments	(50)	0	(50)	0
Total comprehensive loss	$ (15,315)	$ (15,375)	$ (39,949)	$ (34,534)
Net loss per share, basic and diluted (in dollars per share)	$ (0.20)	$ (0.71)	$ (0.65)	$ (1.63)
Weighted average shares used in calculating net loss per share, basic and diluted (in shares)	75,992	21,598	61,628	21,226

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Total	Common stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit
Redeemable convertible preferred stock, beginning balance (in shares) at Jan. 31, 2018	36,000,534
Redeemable convertible preferred stock, beginning balance at Jan. 31, 2018	$ 83,204
Increase (Decrease) in Temporary Equity [Roll Forward]
Issuance of Series D redeemable convertible preferred stock, net of issuance costs of $181 (in shares)	5,272,811
Issuance of Series D redeemable convertible preferred stock, net of issuance costs of $181	$ 89,819
Redeemable convertible preferred stock, ending balance (in shares) at Oct. 31, 2018	41,273,345
Redeemable convertible preferred stock, ending balance at Oct. 31, 2018	$ 173,023
Beginning balance (in shares) at Jan. 31, 2018		21,705,352
Beginning balance at Jan. 31, 2018	(56,365)	$ 0	$ 31,762		$ (88,127)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options and restricted stock agreements, net of repurchases (in shares)		1,240,923
Issuance of common stock upon exercise of stock options and restricted stock agreements, net of repurchases	1,305		1,305
Warrant issued in conjunction with charitable contribution	6,217		6,217
Exercise of common stock warrants (in shares)		101,905
Exercise of common stock warrants	473		473
Vesting of early exercised options	547		547
Stock-based compensation	15,862		15,862
Net loss	(34,534)				(34,534)
Ending balance (in shares) at Oct. 31, 2018		23,048,180
Ending balance at Oct. 31, 2018	$ (66,495)	$ 0	56,166		(122,661)
Redeemable convertible preferred stock, beginning balance (in shares) at Jul. 31, 2018	36,000,534
Redeemable convertible preferred stock, beginning balance at Jul. 31, 2018	$ 83,204
Redeemable convertible preferred stock, ending balance (in shares) at Oct. 31, 2018	41,273,345
Redeemable convertible preferred stock, ending balance at Oct. 31, 2018	$ 173,023
Beginning balance (in shares) at Jul. 31, 2018		22,546,188
Beginning balance at Jul. 31, 2018	(62,813)	$ 0	44,473		(107,286)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options and restricted stock agreements, net of repurchases (in shares)		400,087
Issuance of common stock upon exercise of stock options and restricted stock agreements, net of repurchases	707		707
Exercise of common stock warrants (in shares)		101,905
Exercise of common stock warrants	473		473
Vesting of early exercised options	337		337
Stock-based compensation	10,176		10,176
Net loss	(15,375)				(15,375)
Ending balance (in shares) at Oct. 31, 2018		23,048,180
Ending balance at Oct. 31, 2018	$ (66,495)	$ 0	56,166		(122,661)
Redeemable convertible preferred stock, beginning balance (in shares) at Jan. 31, 2019	41,273,345
Redeemable convertible preferred stock, beginning balance at Jan. 31, 2019	$ 173,023
Increase (Decrease) in Temporary Equity [Roll Forward]
Conversion of convertible preferred stock to common stock in connection with initial public offering (in shares)	(41,273,345)
Conversion of convertible preferred stock to common stock in connection with initial public offering	$ (173,023)
Redeemable convertible preferred stock, ending balance (in shares) at Oct. 31, 2019	0
Redeemable convertible preferred stock, ending balance at Oct. 31, 2019	$ 0
Beginning balance (in shares) at Jan. 31, 2019		23,189,921
Beginning balance at Jan. 31, 2019	(68,930)	$ 0	59,938		(128,868)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options and restricted stock agreements, net of repurchases (in shares)		2,086,075
Issuance of common stock upon exercise of stock options and restricted stock agreements, net of repurchases	5,750		5,750
Vesting of restricted stock units, net of shares withheld for employee payroll taxes (in shares)		1,080
Exercise of common stock warrants (in shares)		737,807
Repayment of promissory note	515		515
Issuance of common stock in connection with initial public offering, net of underwriting discounts and issuance costs (in shares)		9,860,500
Issuance of common stock in connection with initial public offering, net of underwriting discounts and issuance costs	213,697		213,697
Conversion of convertible preferred stock to common stock in connection with initial public offering (in shares)		41,273,345
Conversion of convertible preferred stock to common stock in connection with initial public offering	173,023		173,023
Employee payroll taxes withheld related to vesting of restricted stock units	(14)		(14)
Vesting of early exercised options	1,007		1,007
Stock-based compensation	19,392		19,392
Other comprehensive loss	(50)			$ (50)
Net loss	(39,899)				(39,899)
Ending balance (in shares) at Oct. 31, 2019		77,148,728
Ending balance at Oct. 31, 2019	$ 304,491	$ 0	473,308	(50)	(168,767)
Redeemable convertible preferred stock, beginning balance (in shares) at Jul. 31, 2019	0
Redeemable convertible preferred stock, beginning balance at Jul. 31, 2019	$ 0
Redeemable convertible preferred stock, ending balance (in shares) at Oct. 31, 2019	0
Redeemable convertible preferred stock, ending balance at Oct. 31, 2019	$ 0
Beginning balance (in shares) at Jul. 31, 2019		76,227,101
Beginning balance at Jul. 31, 2019	309,163	$ 0	462,665		(153,502)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options and restricted stock agreements, net of repurchases (in shares)		920,730
Issuance of common stock upon exercise of stock options and restricted stock agreements, net of repurchases	2,965		2,965
Vesting of restricted stock units, net of shares withheld for employee payroll taxes (in shares)		897
Employee payroll taxes withheld related to vesting of restricted stock units	(4)		(4)
Vesting of early exercised options	335		335
Stock-based compensation	7,347		7,347
Other comprehensive loss	(50)			(50)
Net loss	(15,265)				(15,265)
Ending balance (in shares) at Oct. 31, 2019		77,148,728
Ending balance at Oct. 31, 2019	$ 304,491	$ 0	$ 473,308	$ (50)	$ (168,767)

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders' Equity (Deficit) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Oct. 31, 2018	Oct. 31, 2018
Statement of Stockholders' Equity [Abstract]
Issuance costs	$ 181	$ 181

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018
Cash flows from operating activities
Net loss	$ (39,899)	$ (34,534)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	1,675	1,254
Amortization of deferred contract costs	5,499	3,055
Stock-based compensation	19,392	15,862
Warrant issued in conjunction with charitable contribution	0	6,217
Other	(383)	664
Changes in operating assets and liabilities:
Accounts receivable	4,333	(6,245)
Deferred contract costs	(10,945)	(8,924)
Prepaid expenses and other assets	(4,864)	(2,448)
Accounts payable	(1,386)	319
Accrued expenses and other liabilities	2,464	2,127
Accrued compensation	5,619	2,840
Deferred revenue	16,520	13,577
Net cash used in operating activities	(1,975)	(6,236)
Cash flows from investing activities
Purchases of property and equipment	(3,190)	(3,078)
Capitalized internal-use software costs	0	(224)
Purchases of held-to-maturity investments	(45,736)	0
Proceeds from held-to-maturity of investments	8,950	0
Purchases of available-for-sale investments	(132,706)	0
Net cash used in investing activities	(172,682)	(3,302)
Cash flows from financing activities
Proceeds from issuance of redeemable convertible preferred stock, net of issuance costs	0	89,819
Proceeds from initial public offering, net of underwriters' discounts and commissions	220,086	0
Payments of costs related to initial public offering	(5,603)	0
Proceeds from repayment of promissory note	515	0
Proceeds from issuance of common stock upon exercise of stock options	5,750	1,305
Proceeds from early exercised stock options, net of repurchases	0	2,234
Proceeds from issuance of common stock upon exercise of warrants	0	473
Employee payroll taxes paid related to net share settlement of restricted stock units	(14)	0
Net cash provided by financing activities	220,734	93,831
Net increase in cash, cash equivalents and restricted cash	46,077	84,293
Cash, cash equivalents and restricted cash at beginning of period	130,323	46,451
Cash, cash equivalents and restricted cash at end of period	176,400	130,744
Supplemental cash flow data:
Cash paid for taxes	53	45
Non-cash investing and financing activities:
Vesting of early exercised options	1,007	547
Purchase of property and equipment, accrued but not yet paid	347	338
Costs related to initial public offering, accrued but not yet paid	342	245
Non-cash additions of property and equipment	2,364	0
Reconciliation of cash, cash equivalents and restricted cash to the condensed consolidated balance sheets
Total cash, cash equivalents and restricted cash	$ 130,323	$ 46,451

Description of Business and Bas

Description of Business and Basis of Presentation	9 Months Ended
	Oct. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business and Basis of Presentation	Description of Business and Basis of Presentation Description of Business PagerDuty, Inc. (the Company or PagerDuty) was incorporated under the laws of the state of Delaware in May 2010. PagerDuty acts as the central nervous system for the digital enterprise. PagerDuty harnesses digital signals from virtually any software-enabled system or device, combines it with human response data and orchestrates teams to take the right actions in real time. The Company’s products help organizations improve operations, accelerate innovation, increase revenue, mitigate security risk, and deliver a great customer experience. Initial Public Offering On April 15, 2019, the Company completed its initial public offering (IPO), pursuant to which the Company issued and sold 9,860,500 shares of common stock, inclusive of the over-allotment option, at a public offering price of $24.00 per share. The Company received net proceeds of $213.7 million , after deducting underwriters' discounts and commissions of $16.6 million and other issuance costs of $6.4 million . Immediately prior to the closing of the Company’s IPO, all shares of the redeemable convertible preferred stock automatically converted into 41,273,345 shares of common stock. Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (GAAP), and applicable rules and regulations of the Securities and Exchange Commission (SEC) regarding interim financial reporting. The condensed consolidated balance sheet as of January 31, 2019 was derived from the audited consolidated financial statements as of that date but does not include all of the information and notes required by GAAP for complete financial statements. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. Therefore, these condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and the related notes thereto as of and for the year ended January 31, 2019, included in the Company’s final prospectus related to the Company’s IPO dated April 11, 2019 (Prospectus), filed with the SEC pursuant to Rule 424 (b) under the Securities Act of 1933, as amended. There have been no changes to the Company’s significant accounting policies as described in the Prospectus that have had a material impact on the Company’s condensed consolidated financial statements and related notes, except as described below. The condensed consolidated financial statements include the results of PagerDuty, Inc. and its wholly owned subsidiaries. All intercompany balances and transactions have been eliminated upon consolidation. In the opinion of management, the information contained herein reflects all adjustments necessary for a fair presentation of the Company’s results of operations, financial position, cash flows, and statements of redeemable convertible preferred stock and stockholders’ equity (deficit). The results of operations for the three and nine months ended October 31, 2019 are not necessarily indicative of the results to be expected for the full year ending January 31, 2020 or for any other interim period, or for any future year. The Company’s fiscal year ends on January 31. References to fiscal 2020 , for example, refer to the fiscal year ended January 31, 2020 . Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make, on an ongoing basis, estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and the reported amounts of revenue and expenses during the reporting periods. Actual results could differ from these estimates. The Company’s most significant estimates and judgments involve the valuation of the Company’s stock-based awards, including the determination of fair value of common stock (prior to the closing of the IPO) and the fair value of the employee stock purchase plan expense, period of benefit for amortizing deferred contract costs, the determination of the allowance for doubtful accounts, and the provision for income taxes, including the related valuation allowance and any uncertain tax positions, among others. Management bases its estimates on historical experience and on various other assumptions which management believes to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Reclassification Certain reclassifications of prior period amounts have been made in the Company’s condensed consolidated balance sheets and condensed consolidated statements of cash flows to conform to the current period presentation. These reclassifications had no effect on the reported results of operations. Stock Split In May 2018, the Company effected a two -for-one stock split of the Company’s redeemable convertible preferred stock and common stock effective May 3, 2018. All redeemable convertible preferred stock and common stock share and per-share amounts for the periods presented in these condensed financial statements have been retroactively adjusted for the stock split as if such stock split occurred on the first day of the periods presented.

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Oct. 31, 2019
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Segment Information The Company operates as one operating segment. The Company’s chief operating decision maker is its chief executive officer, who reviews financial information presented on a consolidated basis for purposes of making operating decisions, assessing financial performance, and allocating resources. Concentrations of Risk and Significant Customers The Company’s financial instruments that are exposed to concentrations of credit risk consist primarily of cash and cash equivalents, held-to-maturity investments, available-for-sale investments, and accounts receivable. All of the Company’s cash and cash equivalents and investments are invested in money market funds, United States (U.S.) Treasury securities, commercial paper, or corporate debt securities that management believes to be of high credit quality. No customer accounted for more than 10% of the total accounts receivable balance as of October 31, 2019 . One customer accounted for 10% of the total accounts receivable balance as of January 31, 2019 . No single customer represented 10% or more of revenue for the three and nine months ended October 31, 2019 or 2018 . Cash and Cash Equivalents Cash and cash equivalents consist of cash on hand, highly liquid investments with original maturities of three months or less from the date of purchase, and money market funds. Investments The Company’s investments are classified as available-for-sale and held-to-maturity and consist of highly liquid investments, primarily U.S. Treasury securities, commercial paper, and corporate debt securities. The Company determines the appropriate classification of its investments at the time of purchase and reevaluates such designation at each balance sheet date. The Company periodically evaluates its short-term investments to assess whether those with unrealized loss positions are other-than-temporarily impaired. The Company considers various factors in determining whether to recognize an impairment charge, including the length of time the investment has been in a loss position, the extent to which the fair value is less than the Company’s cost basis, and the financial condition and near-term prospects of the investee. If the Company determines that the decline in an investment’s fair value is other-than-temporary, an impairment loss is recognized in earnings equal to the difference between the investment’s amortized cost and fair value at such date. Realized gains and losses are reported in other income, net, in the condensed consolidated statements of operations. No impairment charges have been recognized to date. Held-to-Maturity The Company’s held-to-maturity investments consist of investments with maturities over three months from the date of purchase and less than 12 months from the date of the balance sheet and are classified as short-term. The Company has the ability and positive intent to hold these investments to maturity. Held-to-maturity investments are carried at amortized cost, which approximates fair value. Available-for-Sale The Company classifies its available-for-sale investments, including those with stated maturities beyond twelve months, as short-term based on their highly liquid nature and because they represent the investment of cash that is available for current operations. In addition, the Company may sell these investments at any time for use in its current operations or for other purposes, even prior to maturity. The Company's available-for-sale investments are recorded at fair market value each reporting period. Unrealized gains and losses on these available-for-sale investments are reported as a separate component of accumulated other comprehensive income in the accompanying condensed consolidated balance sheet until realized. Related Party Transactions Certain members of the Company’s Board of Directors serve as directors of, or are executive officers of, and in some cases are investors in, companies that are customers or vendors of the Company. The Company recognized revenue from the sales of its product to a related party of $0.2 million and $0.6 million in the three and nine months ended October 31, 2019 and were immaterial in the three and nine months ended October 31, 2018. Other Related party transactions were not material as of either October 31, 2019 or January 31, 2019 , or for the three and nine months ended October 31, 2019 and 2018 . Deferred Offering Costs Prior to the IPO, all deferred offering costs were capitalized in other noncurrent assets in the condensed consolidated balance sheets. Deferred offering costs of $6.4 million , primarily consisting of accounting, legal, and other fees related to the Company’s IPO, were offset against IPO proceeds upon the closing of the Company’s IPO in April 2019. As of January 31, 2019 , there were $3.3 million of deferred offering costs which are included in other assets in the accompanying condensed consolidated balance sheet as of January 31, 2019. Recently Adopted Accounting Pronouncements In July 2018, the FASB issued ASU 2018-09, Codification Improvements. These amendments provide clarifications and corrections to certain ASC subtopics including the following: 220-10 (Income Statement - Reporting Comprehensive Income - Overall), 470-50 (Debt - Modifications and Extinguishments), 480-10 (Distinguishing Liabilities from Equity - Overall), 718-740 (Compensation - Stock Compensation - Income Taxes), 805-740 (Business Combinations - Income Taxes), 815-10 (Derivatives and Hedging - Overall), and 820-10 (Fair Value Measurement - Overall). Some of the amendments in ASU 2018-09 do not require transition guidance and will be effective upon issuance; however, many of the amendments do have transition guidance with effective dates for annual periods beginning after December 15, 2019. The amendments that were effective upon issuance of the update did not have an impact on the Company’s condensed consolidated financial statements. The Company early adopted this ASU beginning February 1, 2019 noting that the adoption of the standard had no material impact on its condensed consolidated financial statements. Recently Issued Accounting Pronouncements In February 2016, the FASB issued ASU No. 2016-02, Leases, which would require lessees to recognize most leases on their balance sheets, whether operating or financing, while continuing to recognize the expenses on their income statements in a manner similar to current practice. The guidance states that a lessee would recognize a lease liability for the obligation to make lease payments and a right-to-use asset for the right to use the underlying asset for the lease term. The guidance will be effective for the Company beginning February 1, 2020. The Company has completed its process to identify the population of lease arrangements and is nearing the completion of applying the new guidance to each arrangement. The Company is also in the process of determining the incremental borrowing rate for each arrangement. While the adoption remains in progress, the Company expects that adoption will result in the recognition of right-of-use assets and lease liabilities that were not previously recognized, which will increase total assets and liabilities on its consolidated balance sheet. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326) Measurement of Credit Losses on Financial Instruments , which requires an entity to utilize a new impairment model known as the current expected credit loss (“CECL”) model to estimate its lifetime “expected credit loss” and record an allowance that, when deducted from the amortized cost basis of the financial asset, presents the net amount expected to be collected on the financial asset. The CECL model is expected to result in more timely recognition of credit losses. This guidance also requires new disclosures for financial assets measured at amortized cost, loans and available-for-sale debt securities. Entities will apply the standard’s provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. This guidance will be effective for the Company beginning February 1, 2020. The Company is currently evaluating the impact of the adoption of this standard on its consolidated financial statements.

Investments

Investments	9 Months Ended
	Oct. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Investments	Investments The following table summarizes the carrying value of the Company’s investments as of October 31, 2019 (in thousands): Cost Basis Unrealized Gain (Loss), Net Recorded Basis Available-for-sale investments: U.S. Treasury securities $ 29,915 $ 16 $ 29,931 Commercial paper 13,898 (3 ) 13,895 Corporate debt securities 89,000 (63 ) 88,937 Total available-for-sale investments $ 132,813 $ (50 ) $ 132,763 Held-to-maturity investments: U.S. Treasury securities 9,017 — 9,017 Commercial paper 10,443 — 10,443 Corporate debt securities 17,521 — 17,521 Total held-to-maturities investments 36,981 — 36,981 Total investments $ 169,794 $ (50 ) $ 169,744 Gross realized gains or losses from sales of available-for-sale securities were not material for the three and nine month ended October 31, 2019 . All of the Company’s held-to-maturity securities have a contractual maturity of less than one year. The following table presents the contractual maturities of the Company’s available-for-sale securities as of October 31, 2019: Cost Basis Recorded Basis Due within one year $ 83,432 $ 83,426 Due between one to five years 49,381 49,337 $ 132,813 $ 132,763 The Company had no investments as of January 31, 2019 .

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Oct. 31, 2019
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The Company measures its financial assets and liabilities at fair value each reporting period using a fair value hierarchy that prioritizes the use of observable inputs and minimizes the use of unobservable inputs when measuring fair value. A financial instrument’s classification within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement. Three levels of inputs may be used to measure fair value, as follows: Level 1-Valuations based on observable inputs that reflect quoted prices for identical assets or liabilities in active markets. Level 2-Valuations based on inputs that are directly or indirectly observable in the marketplace. Level 3-Valuations based on unobservable inputs that are supported by little or no market activity. The following table presents information about the Company’s financial assets that are required to be measured or disclosed at fair value using the above input categories (in thousands): As of October 31, 2019 Level 1 Level 2 Level 3 Total Money market funds $ 159,047 $ — $ — $ 159,047 U.S. Treasury securities — 38,948 — 38,948 Commercial paper — 24,338 — 24,338 Corporate debt securities — 116,431 — 116,431 Total $ 159,047 $ 179,717 $ — $ 338,764 Included in cash equivalents 169,020 Included in investments 169,744 The Company’s assets that are measured by management at fair value on a recurring basis are generally classified within Level 1 or Level 2 of the fair value hierarchy. The Company did not have any transfers into and out of Level 1 or Level 2 during the nine months ended October 31, 2019 . The Company considers all highly liquid investments purchased with a remaining maturity of three months or less to be cash equivalents. As of October 31, 2019 the Company’s Level 2 securities were priced by pricing vendors. These pricing vendors utilize observable market information in pricing these securities or, if specific prices are not available for these securities, use other observable inputs like market transactions involving identical or comparable securities. The carrying amounts of certain financial instruments, including cash held in banks, accounts receivable and accounts payable approximate fair value due to their short-term maturities and are excluded from the fair value table above.

Property and Equipment, Net

Property and Equipment, Net	9 Months Ended
	Oct. 31, 2019
Property, Plant and Equipment [Abstract]
Property and Equipment, Net	Property and Equipment, Net Property and equipment, net, consisted of the following (in thousands): October 31, 2019 January 31, 2019 Leasehold improvements $ 10,295 $ 6,512 Computers and equipment 4,046 2,998 Capitalized internal-use software 389 389 Furniture and fixtures 1,947 1,239 Gross property and equipment (1) 16,677 11,138 Accumulated depreciation and amortization (6,646 ) (5,366 ) Property and equipment, net $ 10,031 $ 5,772 (1) Gross property and equipment includes construction-in-progress for leasehold improvements of $2.6 million and $0.2 million that had not yet been placed in service as of October 31, 2019 and January 31, 2019 , respectively. The costs associated with construction-in-progress are not amortized until placed in service. Depreciation and amortization expense was $0.6 million and $0.5 million for the three months ended October 31, 2019 and 2018 and $1.6 million and $1.3 million for the nine months ended October 31, 2019 and 2018 , respectively.

Deferred Contract Costs

Deferred Contract Costs	9 Months Ended
	Oct. 31, 2019
Revenue from Contract with Customer [Abstract]
Deferred Contract Costs	Deferred Contract Costs Deferred contract costs, which primarily consist of deferred sales commissions, were $22.9 million and $17.5 million as of October 31, 2019 and January 31, 2019 , respectively. Amortization expense for the deferred costs was $2.1 million and $1.2 million for the three months ended October 31, 2019 and 2018 , respectively, and $5.5 million and $3.1 million for the nine months ended October 31, 2019 and 2018 , respectively. There was no impairment charge related to the costs capitalized for the periods presented. The following table presents the changes to the Company’s deferred revenue (in thousands): Three Months Ended October 31, Nine Months Ended October 31, 2019 2018 2019 2018 Deferred revenue, beginning of period $ 77,797 $ 49,577 $ 64,104 $ 38,169 Billings 45,577 33,398 136,945 97,570 Revenue recognized (42,750 ) (31,229 ) (120,425 ) (83,993 ) Deferred revenue, end of period $ 80,624 $ 51,746 $ 80,624 $ 51,746 For the three months ended October 31, 2019 and 2018, the majority of revenue recognized was from the deferred revenue balances at the beginning of each quarter. For the nine months ended October 31, 2019 and 2018, less than half of revenue recognized was from the deferred revenue balances at the beginning of each period. As of October 31, 2019 and January 31, 2019 , future estimated revenue related to performance obligations for subscriptions with terms of more than one year that are unsatisfied or partially unsatisfied at the end of the reporting periods was approximately $66.9 million and $43.6 million , respectively. The Company expects to satisfy the substantial majority of these unsatisfied performance obligations over the next 24 months and the remainder thereafter. The Company applied the optional exemption for subscriptions with terms of less than a one year.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Oct. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Operating Leases The Company has entered into various non-cancellable operating leases for its office spaces with lease periods expiring between fiscal 2020 and fiscal 2029. In addition to base rent the Company is also committed to pay a portion of the actual operating expenses under certain of these lease arrangements. In December 2015, the Company entered into a sublease agreement for its former headquarters in San Francisco, California. The Company received sublease income of $0.4 million during the three months ended October 31, 2018 and $1.1 million for the nine months ended October 31, 2018 . The lease and related sublease expired in fiscal 2019. The facility lease agreements generally provide for rental payments on a graduated basis and for options to renew, which could increase future minimum lease payments if exercised. The Company recognizes rent expense on a straight-line basis over the lease period and has accrued for rent expense incurred but not paid. Deferred rent was $6.5 million as of October 31, 2019 , of which $0.7 million was included within accrued expenses and other current liabilities and $5.8 million was included within other liabilities on the condensed consolidated balance sheets. Deferred rent was $3.7 million as of January 31, 2019 , of which $0.3 million was included within accrued expenses and other current liabilities and $3.4 million was included within other liabilities on the condensed consolidated balance sheets. Rent expense was $1.8 million and $1.3 million for the three months ended October 31, 2019 and 2018 , respectively, and $4.7 million and $3.6 million for the nine months ended October 31, 2019 and 2018 , respectively. As of October 31, 2019 the future minimum lease payments by fiscal year excluding sublease income under non-cancellable operating leases are as follows (in thousands): Minimum Lease Payments 2020 $ 1,490 2021 5,671 2022 6,364 2023 6,502 2024 6,683 Thereafter 15,848 Total $ 42,558 Total future minimum lease payments under non-cancellable operating leases as of October 31, 2019 are primarily comprised of lease payments due under the lease of the Company’s headquarters in San Francisco, California, and leases for the Company’s offices in Toronto, Canada and Atlanta, Georgia. In July 2019, the Company entered into a non-cancellable operating lease for office space in Atlanta, Georgia, with minimum lease payments of $14.4 million through the lease term of July 2028. Legal Matters From time to time in the normal course of business, the Company may be subject to various claims and other legal matters arising in the ordinary course of business. The Company investigates these claims as they arise and accrues estimates for resolution of legal and other contingencies when losses are probable and estimable. The Company is not currently a party to any legal proceedings and does not anticipate any pending or threatened litigation that would be expected to have a material adverse effect on its financial condition, results of operations, or cash flows. Warranties and Indemnification The Company has entered into service-level agreements with a portion of its customers defining levels of uptime reliability and performance and permitting those customers to receive credits if the Company fails to meet the defined levels of uptime. To date, the Company has not experienced any significant failures to meet defined levels of uptime reliability and performance as a result of those agreements and, as a result, the Company has not incurred or accrued any material liabilities related to these agreements in the financial statements.

Common Stock and Stockholders'

Common Stock and Stockholders' Equity (Deficit)	9 Months Ended
	Oct. 31, 2019
Equity [Abstract]
Common Stock and Stockholders' Equity (Deficit)	Common Stock and Stockholders’ Equity (Deficit) Redeemable Convertible Preferred Stock Immediately prior to the completion of the IPO in April 2019, all shares of redeemable convertible preferred stock then outstanding were converted into 41,273,345 shares of common stock on a one -to-one basis and then immediately reclassified into common stock. Equity Incentive Plans The Company has two equity incentive plans: the 2010 Stock Plan (the 2010 Plan) and the 2019 Equity Incentive Plan (the 2019 Plan, collectively the Stock Plans). Upon completion of the Company’s IPO in April 2019, the Company ceased granting awards under the 2010 Plan, and all shares that remained available for future issuance under the 2010 Plan at that time were transferred to the 2019 Plan. The 2019 Plan superseded and replaced the 2010 Plan. Under the 2019 Plan, the Company’s Board of Directors (the Board) and any other committee or subcommittee of the Board may grant stock options and restricted stock awards (RSAs) and restricted stock units (RSUs) to employees, consultants, and advisors of the Company. Through October 31, 2019 , the Company has granted stock options, RSAs, and RSUs. As of October 31, 2019 and January 31, 2019 , respectively, the Company was authorized to grant up to 13,049,689 shares and 23,929,932 shares of common stock under the Stock Plans. The Company has issued stock options and RSAs to employees and non-employee directors under the 2010 Plan, and certain of these awards allow for early exercise. The Company has issued stock options and RSUs to employees pursuant to the 2019 Plan. Stock options are granted with exercise prices at the fair value of the underlying common stock on the grant date, in general vest based on continuous employment over four years and expire 10 years from the date of grant. RSUs are measured based on the grant date fair value of the awards and in general vest based on continuous employment over four years . In March 2019, the Company granted 3,041,000 stock options to existing employees with 50 percent of these options vesting over four years from the grant date and 50 percent vesting over five years from the grant date. The Company currently uses authorized and unissued shares to satisfy stock award exercises. As of October 31, 2019 and January 31, 2019 , there were 12,249,794 shares and 2,221,216 shares available for future issuance under the Stock Plans, respectively. Shares of common stock reserved for future issuance are as follows: October 31, 2019 Stock options and unvested RSUs outstanding 15,643,007 Available for future stock option and RSU grants 12,249,794 Available for ESPP 1,850,000 Total common stock reserved at October 31, 2019 29,742,801 Stock Option Activity Stock option activity is as follows: Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term Aggregate Intrinsic Value (in thousands) Outstanding at January 31, 2019 14,006,222 $ 4.32 8.0 years $ 142,840 Granted 3,773,315 $ 15.87 Exercised (2,091,575 ) $ 2.67 Canceled (755,794 ) $ 8.34 Outstanding at October 31, 2019 14,932,168 $ 7.28 8.0 years $ 234,653 Vested as of October 31, 2019 6,563,556 $ 3.41 7.2 years $ 128,502 Stock options granted during the three months ended October 31, 2019 and 2018 had a weighted average grant date fair value of $11.72 and $5.50 per share, respectively. The aggregate intrinsic value of stock options exercised during the three months ended October 31, 2019 and 2018 was $21.8 million and $4.0 million , respectively. Stock options granted during the nine months ended October 31, 2019 and 2018 had a weighted average grant date fair value of $10.84 and $4.60 per share, respectively. The aggregate intrinsic value of stock options exercised during the nine months ended October 31, 2019 and 2018 was $52.5 million and $8.6 million , respectively. The intrinsic value for options exercised is the difference between the market value of the stock and the exercise price of the stock option at the date of exercise. As of October 31, 2019 and January 31, 2019 , respectively, there was approximately $52.5 million and $30.6 million of total unrecognized compensation cost related to unvested stock options granted under the Stock Plans, which will be recognized over a weighted average period of 3.4 years and 2.7 years , respectively. Restricted Stock Units A summary of the Company’s RSU activity and related information is as follow: Number of RSUs Weighted Average Grant Date Fair Value Per Share Outstanding at January 31, 2019 — $ — Granted 711,509 $ 30.69 Vested, net of shares withheld for employee payroll taxes (1,080 ) $ 32.51 Canceled (2,108 ) $ 46.26 Outstanding at October 31, 2019 708,321 $ 30.64 As of October 31, 2019 , there was $20.9 million of unrecognized stock-based compensation expense related to unvested RSUs, which is expected to be recognized over a weighted average period of 3.8 years based on vesting under the award service conditions. Employee Stock Purchase Plan In April 2019, the Board adopted and approved the 2019 Employee Stock Purchase Plan (ESPP), which became effective on April 11, 2019. The ESPP initially reserved and authorized the issuance of up to a total of 1,850,000 shares of common stock to participating employees. The initial offering period began April 11, 2019 and will end on June 15, 2021, with purchase dates of December 13, 2019, June 15, 2020, December 15, 2020 and June 15, 2021. The ESPP generally provides for 24 -month offering periods beginning June 15 and December 15 of each year, with each offering period consisting of four six -month purchase periods, except for the initial offering period which began on April 11, 2019 and will end on December 15, 2019. On each purchase date, eligible employees will purchase the shares at a price per share equal to 85% of the lesser of (1) the fair market value of the Company’s stock as of the beginning of the offering period or (2) the fair market value of the Company’s stock on the purchase date, as defined in the ESPP. The Company recognized $1.5 million and $3.7 million of stock-based compensation expense related to ESPP during the three and nine months ended October 31, 2019 , respectively beginning upon the IPO in April 2019. As of October 31, 2019 , $4.1 million has been withheld on behalf of employees for a future purchase under the ESPP. There were no purchases for the three and nine months ended October 31, 2019 related to the ESPP. Warrant Issued as Charitable Contribution In fiscal 2019, the Company commenced an initiative to donate product, equity, and employee time for charitable purposes. In June 2018, as part of this initiative, the Company issued to the Tides Foundation a warrant to purchase up to 648,092 shares of the Company’s common stock, exercisable at a price of $0.01 per share. The common stock warrant was automatically net exercised for 647,822 shares of common stock upon the closing of the IPO. The Company recognized $6.2 million of non-cash charitable contribution expense during the nine months ended October 31, 2018 and this amount is included in general and administrative expense in the accompanying condensed consolidated statement of operations. Common Stock Transfer During the three and nine months ended October 31, 2018, certain of the Company’s investors acquired outstanding common stock from current or former employees at a purchase price greater than or equal to the estimated fair value at the time of the transactions. For the shares acquired at a price in excess of fair value during the three and nine months ended October 31, 2018, the Company recorded stock-based compensation expense for the difference between the price paid and the estimated fair value on the date of the transactions of $5.5 million . The Company recorded $3.8 million of this expense in research and development expense, $1.4 million in general and administrative expense and $0.3 million in sales and marketing expense. In connection with these stock transfers, the Company either waived or assigned its rights of first refusal or other transfer restrictions applicable to such shares. There were no such transactions during the three or nine months ended October 31, 2019. Stock-Based Compensation The Company uses the Black-Scholes option-pricing model to estimate the fair value of stock options on the date of grant. The Company uses the fair value of RSUs based on the fair value of the underlying shares on the date of grant. The Company accounts for forfeitures as they occur. Stock-based compensation expense included in the Company’s condensed consolidated statements of operations is as follows (in thousands): Three Months Ended October 31, Nine Months Ended October 31, 2019 2018 2019 2018 Cost of revenue $ 303 $ 71 $ 773 $ 202 Research and development 1,462 6,567 3,760 7,680 Sales and marketing 2,295 1,198 6,084 2,964 General and administrative (1) 3,287 2,340 8,775 5,016 Total $ 7,347 $ 10,176 $ 19,392 $ 15,862 (1) Stock-based compensation expense above does not include $6.2 million of non-cash charitable contribution expense.

Deferred Revenue and Performanc

Deferred Revenue and Performance Obligations	9 Months Ended
	Oct. 31, 2019
Revenue from Contract with Customer [Abstract]
Deferred Revenue and Performance Obligations	Deferred Contract Costs Deferred contract costs, which primarily consist of deferred sales commissions, were $22.9 million and $17.5 million as of October 31, 2019 and January 31, 2019 , respectively. Amortization expense for the deferred costs was $2.1 million and $1.2 million for the three months ended October 31, 2019 and 2018 , respectively, and $5.5 million and $3.1 million for the nine months ended October 31, 2019 and 2018 , respectively. There was no impairment charge related to the costs capitalized for the periods presented. The following table presents the changes to the Company’s deferred revenue (in thousands): Three Months Ended October 31, Nine Months Ended October 31, 2019 2018 2019 2018 Deferred revenue, beginning of period $ 77,797 $ 49,577 $ 64,104 $ 38,169 Billings 45,577 33,398 136,945 97,570 Revenue recognized (42,750 ) (31,229 ) (120,425 ) (83,993 ) Deferred revenue, end of period $ 80,624 $ 51,746 $ 80,624 $ 51,746 For the three months ended October 31, 2019 and 2018, the majority of revenue recognized was from the deferred revenue balances at the beginning of each quarter. For the nine months ended October 31, 2019 and 2018, less than half of revenue recognized was from the deferred revenue balances at the beginning of each period. As of October 31, 2019 and January 31, 2019 , future estimated revenue related to performance obligations for subscriptions with terms of more than one year that are unsatisfied or partially unsatisfied at the end of the reporting periods was approximately $66.9 million and $43.6 million , respectively. The Company expects to satisfy the substantial majority of these unsatisfied performance obligations over the next 24 months and the remainder thereafter. The Company applied the optional exemption for subscriptions with terms of less than a one year.

Net Loss Per Share

Net Loss Per Share	9 Months Ended
	Oct. 31, 2019
Earnings Per Share [Abstract]
Net Loss Per Share	Net Loss per Share The following table presents the calculation of basic and diluted net loss per share (in thousands, except per share data): Three Months Ended October 31, Nine Months Ended October 31, 2019 2018 2019 2018 Numerator: Net loss $ (15,265 ) $ (15,375 ) $ (39,899 ) $ (34,534 ) Denominator: Weighted average shares used in calculating net loss per share, basic and diluted 75,992 21,598 61,628 21,226 Net loss per share, basic and diluted $ (0.20 ) $ (0.71 ) $ (0.65 ) $ (1.63 ) Since the Company was in a loss position for the periods presented, basic net loss per share is the same as diluted net loss per share as the inclusion of all potential common shares outstanding would have been anti-dilutive. Potentially dilutive securities that were not included in the diluted per share calculations because they would be anti-dilutive were as follows (in thousands): As of October 31, 2019 2018 Redeemable convertible preferred stock — 41,273 Shares subject to outstanding common stock options 14,932 13,877 Unvested early exercised stock options 140 404 Warrants to purchase common stock — 750 Early exercised stock options in exchange for note receivable — 250 Restricted stock awards purchased with promissory notes 216 510 Shares issuable pursuant to the 2019 Employee Stock Purchase Plan 202 — Total 15,490 57,064

Income Taxes

Income Taxes	9 Months Ended
	Oct. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company's provision for income taxes for interim periods is determined using an estimate of its annual effective tax rate, adjusted for discrete items, if any, that arise during the period. Each quarter, the Company updates its estimate of the annual effective tax rate, and if the estimated annual effective tax rate changes, the Company makes a cumulative adjustment in such period. The Company's quarterly tax provision, and estimate of its annual effective tax rate, is subject to variation due to several factors, including variability in pre-tax income (or loss), the mix of jurisdictions to which such income (or loss) relates, changes in how the Company does business, and tax law developments. The Company's estimated effective tax rate for the year differs from the U.S. statutory rate of 21% as a result of our U.S. losses for which no benefit will be realized, as well as our foreign operations which are subject to tax rates that differ from those in the U.S. The Company recorded an income tax expense of $0.2 million and $0.1 million for the three months ended October 31, 2019 and 2018 , respectively, and $0.7 million and $0.3 million for the nine months ended October 31, 2019 and 2018 , respectively. The income tax expense for the three and nine months ended October 31, 2019 as compared to the income tax expense for the three and nine months ended October 31, 2018 , changed primarily due to growth in our foreign operations.

Geographic Information

Geographic Information	9 Months Ended
	Oct. 31, 2019
Segment Reporting [Abstract]
Geographic Information	Geographic Information Revenue by location is determined by the billing address of the customer. The following table sets forth revenue by geographic area (in thousands): Three Months Ended October 31, Nine Months Ended October 31, 2019 2018 2019 2018 United States $ 33,330 $ 25,018 $ 94,390 $ 67,483 International 9,420 6,211 26,035 16,510 Total $ 42,750 $ 31,229 $ 120,425 $ 83,993 Other than the United States, no other individual country accounted for 10% or more of revenue for the three and nine months ended October 31, 2019 or 2018 . As of October 31, 2019 , 70% of the Company’s property and equipment was located in the United States and 30% was located in Canada. As of January 31, 2019 , 48% of the Company’s property and equipment was located in the United States and 52%

Subsequent Events

Subsequent Events	9 Months Ended
	Oct. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events The Company has evaluated subsequent events through December 6, 2019.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Oct. 31, 2019
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (GAAP), and applicable rules and regulations of the Securities and Exchange Commission (SEC) regarding interim financial reporting. The condensed consolidated balance sheet as of January 31, 2019 was derived from the audited consolidated financial statements as of that date but does not include all of the information and notes required by GAAP for complete financial statements. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. Therefore, these condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and the related notes thereto as of and for the year ended January 31, 2019, included in the Company’s final prospectus related to the Company’s IPO dated April 11, 2019 (Prospectus), filed with the SEC pursuant to Rule 424 (b) under the Securities Act of 1933, as amended. There have been no changes to the Company’s significant accounting policies as described in the Prospectus that have had a material impact on the Company’s condensed consolidated financial statements and related notes, except as described below. The condensed consolidated financial statements include the results of PagerDuty, Inc. and its wholly owned subsidiaries. All intercompany balances and transactions have been eliminated upon consolidation. In the opinion of management, the information contained herein reflects all adjustments necessary for a fair presentation of the Company’s results of operations, financial position, cash flows, and statements of redeemable convertible preferred stock and stockholders’ equity (deficit). The results of operations for the three and nine months ended October 31, 2019 are not necessarily indicative of the results to be expected for the full year ending January 31, 2020 or for any other interim period, or for any future year. The Company’s fiscal year ends on January 31. References to fiscal 2020 , for example, refer to the fiscal year ended January 31, 2020 .
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make, on an ongoing basis, estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and the reported amounts of revenue and expenses during the reporting periods. Actual results could differ from these estimates. The Company’s most significant estimates and judgments involve the valuation of the Company’s stock-based awards, including the determination of fair value of common stock (prior to the closing of the IPO) and the fair value of the employee stock purchase plan expense, period of benefit for amortizing deferred contract costs, the determination of the allowance for doubtful accounts, and the provision for income taxes, including the related valuation allowance and any uncertain tax positions, among others. Management bases its estimates on historical experience and on various other assumptions which management believes to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities.
Reclassification	Reclassification Certain reclassifications of prior period amounts have been made in the Company’s condensed consolidated balance sheets and condensed consolidated statements of cash flows to conform to the current period presentation. These reclassifications had no effect on the reported results of operations.
Segment Information	Segment Information The Company operates as one operating segment. The Company’s chief operating decision maker is its chief executive officer, who reviews financial information presented on a consolidated basis for purposes of making operating decisions, assessing financial performance, and allocating resources.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents consist of cash on hand, highly liquid investments with original maturities of three months or less from the date of purchase, and money market funds.
Investments	Investments The Company’s investments are classified as available-for-sale and held-to-maturity and consist of highly liquid investments, primarily U.S. Treasury securities, commercial paper, and corporate debt securities. The Company determines the appropriate classification of its investments at the time of purchase and reevaluates such designation at each balance sheet date. The Company periodically evaluates its short-term investments to assess whether those with unrealized loss positions are other-than-temporarily impaired. The Company considers various factors in determining whether to recognize an impairment charge, including the length of time the investment has been in a loss position, the extent to which the fair value is less than the Company’s cost basis, and the financial condition and near-term prospects of the investee. If the Company determines that the decline in an investment’s fair value is other-than-temporary, an impairment loss is recognized in earnings equal to the difference between the investment’s amortized cost and fair value at such date. Realized gains and losses are reported in other income, net, in the condensed consolidated statements of operations. No impairment charges have been recognized to date. Held-to-Maturity The Company’s held-to-maturity investments consist of investments with maturities over three months from the date of purchase and less than 12 months from the date of the balance sheet and are classified as short-term. The Company has the ability and positive intent to hold these investments to maturity. Held-to-maturity investments are carried at amortized cost, which approximates fair value. Available-for-Sale The Company classifies its available-for-sale investments, including those with stated maturities beyond twelve months, as short-term based on their highly liquid nature and because they represent the investment of cash that is available for current operations. In addition, the Company may sell these investments at any time for use in its current operations or for other purposes, even prior to maturity. The Company's available-for-sale investments are recorded at fair market value each reporting period. Unrealized gains and losses on these available-for-sale investments are reported as a separate component of accumulated other comprehensive income in the accompanying condensed consolidated balance sheet until realized.
Deferred Offering Costs	Deferred Offering Costs Prior to the IPO, all deferred offering costs were capitalized in other noncurrent assets in the condensed consolidated balance sheets. Deferred offering costs of $6.4 million
Recently Adopted/Issued Accounting Pronouncements	Recently Adopted Accounting Pronouncements In July 2018, the FASB issued ASU 2018-09, Codification Improvements. These amendments provide clarifications and corrections to certain ASC subtopics including the following: 220-10 (Income Statement - Reporting Comprehensive Income - Overall), 470-50 (Debt - Modifications and Extinguishments), 480-10 (Distinguishing Liabilities from Equity - Overall), 718-740 (Compensation - Stock Compensation - Income Taxes), 805-740 (Business Combinations - Income Taxes), 815-10 (Derivatives and Hedging - Overall), and 820-10 (Fair Value Measurement - Overall). Some of the amendments in ASU 2018-09 do not require transition guidance and will be effective upon issuance; however, many of the amendments do have transition guidance with effective dates for annual periods beginning after December 15, 2019. The amendments that were effective upon issuance of the update did not have an impact on the Company’s condensed consolidated financial statements. The Company early adopted this ASU beginning February 1, 2019 noting that the adoption of the standard had no material impact on its condensed consolidated financial statements. Recently Issued Accounting Pronouncements In February 2016, the FASB issued ASU No. 2016-02, Leases, which would require lessees to recognize most leases on their balance sheets, whether operating or financing, while continuing to recognize the expenses on their income statements in a manner similar to current practice. The guidance states that a lessee would recognize a lease liability for the obligation to make lease payments and a right-to-use asset for the right to use the underlying asset for the lease term. The guidance will be effective for the Company beginning February 1, 2020. The Company has completed its process to identify the population of lease arrangements and is nearing the completion of applying the new guidance to each arrangement. The Company is also in the process of determining the incremental borrowing rate for each arrangement. While the adoption remains in progress, the Company expects that adoption will result in the recognition of right-of-use assets and lease liabilities that were not previously recognized, which will increase total assets and liabilities on its consolidated balance sheet. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326) Measurement of Credit Losses on Financial Instruments , which requires an entity to utilize a new impairment model known as the current expected credit loss (“CECL”) model to estimate its lifetime “expected credit loss” and record an allowance that, when deducted from the amortized cost basis of the financial asset, presents the net amount expected to be collected on the financial asset. The CECL model is expected to result in more timely recognition of credit losses. This guidance also requires new disclosures for financial assets measured at amortized cost, loans and available-for-sale debt securities. Entities will apply the standard’s provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. This guidance will be effective for the Company beginning February 1, 2020. The Company is currently evaluating the impact of the adoption of this standard on its consolidated financial statements.
Fair Value Measurements	The Company measures its financial assets and liabilities at fair value each reporting period using a fair value hierarchy that prioritizes the use of observable inputs and minimizes the use of unobservable inputs when measuring fair value. A financial instrument’s classification within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement. Three levels of inputs may be used to measure fair value, as follows: Level 1-Valuations based on observable inputs that reflect quoted prices for identical assets or liabilities in active markets. Level 2-Valuations based on inputs that are directly or indirectly observable in the marketplace. Level 3-Valuations based on unobservable inputs that are supported by little or no market activity.

Investments (Tables)

Investments (Tables)	9 Months Ended
	Oct. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Summary of Carrying Value of Held-to-maturity Investments	The following table summarizes the carrying value of the Company’s investments as of October 31, 2019 (in thousands): Cost Basis Unrealized Gain (Loss), Net Recorded Basis Available-for-sale investments: U.S. Treasury securities $ 29,915 $ 16 $ 29,931 Commercial paper 13,898 (3 ) 13,895 Corporate debt securities 89,000 (63 ) 88,937 Total available-for-sale investments $ 132,813 $ (50 ) $ 132,763 Held-to-maturity investments: U.S. Treasury securities 9,017 — 9,017 Commercial paper 10,443 — 10,443 Corporate debt securities 17,521 — 17,521 Total held-to-maturities investments 36,981 — 36,981 Total investments $ 169,794 $ (50 ) $ 169,744
Summary of Carrying Value of Available-for-sale Investments	The following table summarizes the carrying value of the Company’s investments as of October 31, 2019 (in thousands): Cost Basis Unrealized Gain (Loss), Net Recorded Basis Available-for-sale investments: U.S. Treasury securities $ 29,915 $ 16 $ 29,931 Commercial paper 13,898 (3 ) 13,895 Corporate debt securities 89,000 (63 ) 88,937 Total available-for-sale investments $ 132,813 $ (50 ) $ 132,763 Held-to-maturity investments: U.S. Treasury securities 9,017 — 9,017 Commercial paper 10,443 — 10,443 Corporate debt securities 17,521 — 17,521 Total held-to-maturities investments 36,981 — 36,981 Total investments $ 169,794 $ (50 ) $ 169,744
Summary of Contractual Maturities of Available-for-sale Securities	The following table presents the contractual maturities of the Company’s available-for-sale securities as of October 31, 2019: Cost Basis Recorded Basis Due within one year $ 83,432 $ 83,426 Due between one to five years 49,381 49,337 $ 132,813 $ 132,763

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Oct. 31, 2019
Fair Value Disclosures [Abstract]
Summary of Information about Company's Financial Assets	The following table presents information about the Company’s financial assets that are required to be measured or disclosed at fair value using the above input categories (in thousands): As of October 31, 2019 Level 1 Level 2 Level 3 Total Money market funds $ 159,047 $ — $ — $ 159,047 U.S. Treasury securities — 38,948 — 38,948 Commercial paper — 24,338 — 24,338 Corporate debt securities — 116,431 — 116,431 Total $ 159,047 $ 179,717 $ — $ 338,764 Included in cash equivalents 169,020 Included in investments 169,744

Property and Equipment, Net (Ta

Property and Equipment, Net (Tables)	9 Months Ended
	Oct. 31, 2019
Property, Plant and Equipment [Abstract]
Property and Equipment, Net	Property and equipment, net, consisted of the following (in thousands): October 31, 2019 January 31, 2019 Leasehold improvements $ 10,295 $ 6,512 Computers and equipment 4,046 2,998 Capitalized internal-use software 389 389 Furniture and fixtures 1,947 1,239 Gross property and equipment (1) 16,677 11,138 Accumulated depreciation and amortization (6,646 ) (5,366 ) Property and equipment, net $ 10,031 $ 5,772 (1) Gross property and equipment includes construction-in-progress for leasehold improvements of $2.6 million and $0.2 million that had not yet been placed in service as of October 31, 2019 and January 31, 2019 , respectively. The costs associated with construction-in-progress are not amortized until placed in service.

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Oct. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Schedule of Future Minimum Lease Payments By Fiscal Year Excluding Sublease Income	As of October 31, 2019 the future minimum lease payments by fiscal year excluding sublease income under non-cancellable operating leases are as follows (in thousands): Minimum Lease Payments 2020 $ 1,490 2021 5,671 2022 6,364 2023 6,502 2024 6,683 Thereafter 15,848 Total $ 42,558

Common Stock and Stockholders_2

Common Stock and Stockholders' Equity (Deficit) (Tables)	9 Months Ended
	Oct. 31, 2019
Equity [Abstract]
Summary of Shares of Common Stock Reserved for Future Issuance	Shares of common stock reserved for future issuance are as follows: October 31, 2019 Stock options and unvested RSUs outstanding 15,643,007 Available for future stock option and RSU grants 12,249,794 Available for ESPP 1,850,000 Total common stock reserved at October 31, 2019 29,742,801
Schedule of Stock Option Activity	Stock option activity is as follows: Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term Aggregate Intrinsic Value (in thousands) Outstanding at January 31, 2019 14,006,222 $ 4.32 8.0 years $ 142,840 Granted 3,773,315 $ 15.87 Exercised (2,091,575 ) $ 2.67 Canceled (755,794 ) $ 8.34 Outstanding at October 31, 2019 14,932,168 $ 7.28 8.0 years $ 234,653 Vested as of October 31, 2019 6,563,556 $ 3.41 7.2 years $ 128,502
Schedule of Restricted Stock Unit Activity	A summary of the Company’s RSU activity and related information is as follow: Number of RSUs Weighted Average Grant Date Fair Value Per Share Outstanding at January 31, 2019 — $ — Granted 711,509 $ 30.69 Vested, net of shares withheld for employee payroll taxes (1,080 ) $ 32.51 Canceled (2,108 ) $ 46.26 Outstanding at October 31, 2019 708,321 $ 30.64
Schedule of Stock-based Compensation Expense	Stock-based compensation expense included in the Company’s condensed consolidated statements of operations is as follows (in thousands): Three Months Ended October 31, Nine Months Ended October 31, 2019 2018 2019 2018 Cost of revenue $ 303 $ 71 $ 773 $ 202 Research and development 1,462 6,567 3,760 7,680 Sales and marketing 2,295 1,198 6,084 2,964 General and administrative (1) 3,287 2,340 8,775 5,016 Total $ 7,347 $ 10,176 $ 19,392 $ 15,862 (1) Stock-based compensation expense above does not include $6.2 million of non-cash charitable contribution expense.

Deferred Revenue and Performa_2

Deferred Revenue and Performance Obligations (Tables)	9 Months Ended
	Oct. 31, 2019
Revenue from Contract with Customer [Abstract]
Summary of Deferred Revenue	The following table presents the changes to the Company’s deferred revenue (in thousands): Three Months Ended October 31, Nine Months Ended October 31, 2019 2018 2019 2018 Deferred revenue, beginning of period $ 77,797 $ 49,577 $ 64,104 $ 38,169 Billings 45,577 33,398 136,945 97,570 Revenue recognized (42,750 ) (31,229 ) (120,425 ) (83,993 ) Deferred revenue, end of period $ 80,624 $ 51,746 $ 80,624 $ 51,746

Net Loss Per Share (Tables)

Net Loss Per Share (Tables)	9 Months Ended
	Oct. 31, 2019
Earnings Per Share [Abstract]
Calculation of Basic and Diluted Net Loss Per Share	The following table presents the calculation of basic and diluted net loss per share (in thousands, except per share data): Three Months Ended October 31, Nine Months Ended October 31, 2019 2018 2019 2018 Numerator: Net loss $ (15,265 ) $ (15,375 ) $ (39,899 ) $ (34,534 ) Denominator: Weighted average shares used in calculating net loss per share, basic and diluted 75,992 21,598 61,628 21,226 Net loss per share, basic and diluted $ (0.20 ) $ (0.71 ) $ (0.65 ) $ (1.63 )
Schedule of Anti-dilutive Securities That Were Not Included in Diluted Per Share Calculations	Potentially dilutive securities that were not included in the diluted per share calculations because they would be anti-dilutive were as follows (in thousands): As of October 31, 2019 2018 Redeemable convertible preferred stock — 41,273 Shares subject to outstanding common stock options 14,932 13,877 Unvested early exercised stock options 140 404 Warrants to purchase common stock — 750 Early exercised stock options in exchange for note receivable — 250 Restricted stock awards purchased with promissory notes 216 510 Shares issuable pursuant to the 2019 Employee Stock Purchase Plan 202 — Total 15,490 57,064

Geographic Information (Tables)

Geographic Information (Tables)	9 Months Ended
	Oct. 31, 2019
Segment Reporting [Abstract]
Disaggregation of Revenue By Geographic Location	Revenue by location is determined by the billing address of the customer. The following table sets forth revenue by geographic area (in thousands): Three Months Ended October 31, Nine Months Ended October 31, 2019 2018 2019 2018 United States $ 33,330 $ 25,018 $ 94,390 $ 67,483 International 9,420 6,211 26,035 16,510 Total $ 42,750 $ 31,229 $ 120,425 $ 83,993

Description of Business and B_2

Description of Business and Basis of Presentation (Details) $ / shares in Units, $ in Thousands	Apr. 15, 2019USD ($)$ / sharesshares	Apr. 14, 2019shares	May 31, 2018	Oct. 31, 2019USD ($)shares	Oct. 31, 2018USD ($)
Subsidiary, Sale of Stock [Line Items]
Payments of other offering costs	$ 6,400			$ 5,603	$ 0
Common stock
Subsidiary, Sale of Stock [Line Items]
Number of shares as a result of conversion (in shares) | shares		41,273,345		41,273,345
Stock split, conversion ratio			2
Redeemable convertible preferred stock
Subsidiary, Sale of Stock [Line Items]
Stock split, conversion ratio			2
IPO
Subsidiary, Sale of Stock [Line Items]
Number of shares issued and sold (in shares) | shares	9,860,500
Public offering price (in dollars per share) | $ / shares	$ 24
Proceeds from sale of stock	$ 213,700
Payments of underwriters' commissions and discounts	16,600
Payments of other offering costs	$ 6,400

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Details) $ in Thousands	Apr. 15, 2019USD ($)	Oct. 31, 2019USD ($)	Oct. 31, 2018USD ($)	Oct. 31, 2019USD ($)segment	Oct. 31, 2018USD ($)	Jan. 31, 2019USD ($)
Concentration Risk [Line Items]
Number of operating segments | segment				1
Revenue from sale of product to related parties		$ 200	$ 0	$ 600	$ 0
Payments of offering costs	$ 6,400			$ 5,603	$ 0
Deferred offering costs						$ 3,300
Top Customer | Customer Concentration Risk | Accounts Receivable
Concentration Risk [Line Items]
Concentration risk, percentage						10.00%

Investments - Carrying Value of

Investments - Carrying Value of Investments (Details) - USD ($)	Oct. 31, 2019	Jan. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Investments	$ 132,813,000
Available-for-sale Investments, Unrealized Gain (Loss), Net	(50,000)
Available-for-sale Investments, Recorded Basis	132,763,000
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Investments, Cost Basis	36,981,000
Held-to-maturity Investments, Unrealized Gain (Loss), Net	0
Held-to-maturity Investments, Recorded Basis	36,981,000
Investments, Cost Basis	169,794,000
Investments, Unrealized Gain (Loss), Net	(50,000)
Investments, Recorded Basis	169,744,000	$ 0
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Investments	29,915,000
Available-for-sale Investments, Unrealized Gain (Loss), Net	16,000
Available-for-sale Investments, Recorded Basis	29,931,000
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Investments, Cost Basis	9,017,000
Held-to-maturity Investments, Unrealized Gain (Loss), Net	0
Held-to-maturity Investments, Recorded Basis	9,017,000
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Investments	13,898,000
Available-for-sale Investments, Unrealized Gain (Loss), Net	(3,000)
Available-for-sale Investments, Recorded Basis	13,895,000
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Investments, Cost Basis	10,443,000
Held-to-maturity Investments, Unrealized Gain (Loss), Net	0
Held-to-maturity Investments, Recorded Basis	10,443,000
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Investments	89,000,000
Available-for-sale Investments, Unrealized Gain (Loss), Net	(63,000)
Available-for-sale Investments, Recorded Basis	88,937,000
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Investments, Cost Basis	17,521,000
Held-to-maturity Investments, Unrealized Gain (Loss), Net	0
Held-to-maturity Investments, Recorded Basis	$ 17,521,000

Investments - Contractual Matur

Investments - Contractual Maturity (Details)	Oct. 31, 2019USD ($)
Investments, Debt and Equity Securities [Abstract]
Available-for-sale securities, due within one year	$ 83,432,000
Available-for-sale securities, due between one to five years	49,381,000
Available-for-sale Investments	132,813,000
Available-for-sale securities, due within one year, fair value	83,426,000
Available-for-sale securities, due between one to five years, fair value	49,337,000
Available-for-sale securities, fair value	$ 132,763,000

Fair Value Measurements (Detail

Fair Value Measurements (Details) - Recurring $ in Thousands	Oct. 31, 2019USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	$ 169,020
Investments	169,744
Total	338,764
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	159,047
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	179,717
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	0
Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	159,047
Money market funds | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	159,047
Money market funds | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	0
Money market funds | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	0
U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	38,948
U.S. Treasury securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0
U.S. Treasury securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	38,948
U.S. Treasury securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0
Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	24,338
Commercial paper | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0
Commercial paper | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	24,338
Commercial paper | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0
Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	116,431
Corporate debt securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0
Corporate debt securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	116,431
Corporate debt securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	$ 0

Property and Equipment, Net (De

Property and Equipment, Net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018	Jan. 31, 2019
Property, Plant and Equipment [Line Items]
Gross property and equipment	$ 16,677		$ 16,677		$ 11,138
Accumulated depreciation and amortization	(6,646)		(6,646)		(5,366)
Property and equipment, net	10,031		10,031		5,772
Depreciation and amortization	600	$ 500	1,600	$ 1,300
Leasehold improvements
Property, Plant and Equipment [Line Items]
Gross property and equipment	10,295		10,295		6,512
Computers and equipment
Property, Plant and Equipment [Line Items]
Gross property and equipment	4,046		4,046		2,998
Capitalized internal-use software
Property, Plant and Equipment [Line Items]
Gross property and equipment	389		389		389
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Gross property and equipment	1,947		1,947		1,239
Construction-in-progress
Property, Plant and Equipment [Line Items]
Gross property and equipment	$ 2,600		$ 2,600		$ 200

Deferred Contract Costs (Detail

Deferred Contract Costs (Details) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018	Jan. 31, 2019
Revenue from Contract with Customer [Abstract]
Deferred contract costs	$ 22,900,000		$ 22,900,000		$ 17,500,000
Amortization of deferred contract costs	2,100,000	$ 1,200,000	5,499,000	$ 3,055,000
Impairment loss in relation to costs capitalized	$ 0	$ 0	$ 0	$ 0

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018	Jul. 31, 2019	Jan. 31, 2019
Operating Leased Assets [Line Items]
Sublease income		$ 400		$ 1,100
Deferred rent	$ 6,500		$ 6,500			$ 3,700
Rent expense	1,800	$ 1,300	4,700	$ 3,600
Future minimum lease payments	42,558		42,558
Accrued expenses and other current liabilities
Operating Leased Assets [Line Items]
Deferred rent	700		700			300
Other liabilities
Operating Leased Assets [Line Items]
Deferred rent	$ 5,800		$ 5,800			$ 3,400
Atlanta, Georgia
Operating Leased Assets [Line Items]
Future minimum lease payments					$ 14,400

Commitments and Contingencies_2

Commitments and Contingencies - Future Minimum Rental Payments (Details) $ in Thousands	Oct. 31, 2019USD ($)
Commitments and Contingencies Disclosure [Abstract]
2020	$ 1,490
2021	5,671
2022	6,364
2023	6,502
2024	6,683
Thereafter	15,848
Total	$ 42,558

Common Stock and Stockholders_3

Common Stock and Stockholders' Equity (Deficit) - Shares Available for Issuance (Details) - shares	Oct. 31, 2019	Jan. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares)	12,249,794	2,221,216
Total common stock reserved at October 31, 2019 (in shares)	29,742,801
Stock options and RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options and unvested RSUs outstanding (in shares)	15,643,007
Number of shares available for grant (in shares)	12,249,794
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares)	1,850,000

Common Stock and Stockholders_4

Common Stock and Stockholders' Equity (Deficit) - Additional Information (Details)	Apr. 15, 2019shares	Apr. 14, 2019shares	Apr. 11, 2019purchase_periodshares	Mar. 31, 2019shares	Oct. 31, 2019USD ($)$ / sharesshares	Oct. 31, 2018USD ($)$ / sharesshares	Oct. 31, 2019USD ($)equity_incentive_plan$ / sharesshares	Oct. 31, 2018USD ($)$ / sharesshares	Jan. 31, 2019USD ($)shares	Jun. 30, 2018$ / sharesshares
Subsidiary, Sale of Stock [Line Items]
Number of equity incentive plans | equity_incentive_plan							2
Number of shares authorized for grant (in shares) | shares					13,049,689		13,049,689		23,929,932
Options granted (in shares) | shares				3,041,000			3,773,315
Number of shares available for grant (in shares) | shares					12,249,794		12,249,794		2,221,216
Weighted average grant date fair value of stock options (in dollars per share) | $ / shares					$ 11.72	$ 5.50	$ 10.84	$ 4.60
Aggregate intrinsic value of stock options exercised					$ 21,800,000	$ 4,000,000	$ 52,500,000	$ 8,600,000
Unrecognized compensation cost related to unvested stock options					52,500,000		$ 52,500,000		$ 30,600,000
Unrecognized compensation cost related to unvested awards, period for recognition							3 years 4 months 24 days		2 years 8 months 12 days
Stock-based compensation expense					7,347,000	10,176,000	$ 19,392,000	15,862,000
Non-cash charitable contribution expense							0	6,217,000
Stock-based compensation expense for the difference between price paid and estimated fair value of shares					$ 0	$ 5,500,000	$ 0	$ 5,500,000
Common stock
Subsidiary, Sale of Stock [Line Items]
Number of shares as a result of conversion (in shares) | shares		41,273,345					41,273,345
Conversion ratio		1
Number of shares called by warrant | shares										648,092
Exercise price (in dollars per share) | $ / shares										$ 0.01
Exercise of common stock warrants (in shares) | shares	647,822					101,905	737,807	101,905
Stock options
Subsidiary, Sale of Stock [Line Items]
Vesting period							4 years
Expiration period							10 years
Shares issuable pursuant to the 2019 Employee Stock Purchase Plan
Subsidiary, Sale of Stock [Line Items]
Number of shares authorized for grant (in shares) | shares			1,850,000
Number of shares available for grant (in shares) | shares					1,850,000		1,850,000
Offering period			24 months
Number of purchase periods within each offering period | purchase_period			4
Purchase period			6 months
Purchase price as a percentage of fair market value of stock on the offering date or the purchase date			85.00%
Stock-based compensation expense					$ 1,500,000		$ 3,700,000
Amount withheld on behalf of employees for future purchase					$ 4,100,000		$ 4,100,000
Shares purchased (in shares) | shares					0		0
RSUs
Subsidiary, Sale of Stock [Line Items]
Vesting period							4 years
Unrecognized compensation cost related to unvested awards, period for recognition							3 years 9 months 18 days
Unrecognized compensation cost related to unvested RSUs					$ 20,900,000		$ 20,900,000
50% vest over four years from grant date | Stock options
Subsidiary, Sale of Stock [Line Items]
Vesting period				4 years
Vesting percentage				50.00%
50% vest over five years from grant date | Stock options
Subsidiary, Sale of Stock [Line Items]
Vesting period				5 years
Vesting percentage				50.00%
Research and development
Subsidiary, Sale of Stock [Line Items]
Stock-based compensation expense					1,462,000	$ 6,567,000	3,760,000	$ 7,680,000
Stock-based compensation expense for the difference between price paid and estimated fair value of shares						3,800,000		3,800,000
General and administrative
Subsidiary, Sale of Stock [Line Items]
Stock-based compensation expense					3,287,000	2,340,000	8,775,000	5,016,000
Stock-based compensation expense for the difference between price paid and estimated fair value of shares						1,400,000		1,400,000
Sales and marketing
Subsidiary, Sale of Stock [Line Items]
Stock-based compensation expense					$ 2,295,000	1,198,000	$ 6,084,000	2,964,000
Stock-based compensation expense for the difference between price paid and estimated fair value of shares						$ 300,000		$ 300,000

Common Stock and Stockholders_5

Common Stock and Stockholders' Equity (Deficit) - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	9 Months Ended
	Mar. 31, 2019	Oct. 31, 2019	Jan. 31, 2019
Number of Shares
Outstanding, beginning balance (in shares)		14,006,222
Granted (in shares)	3,041,000	3,773,315
Exercised (in shares)		(2,091,575)
Canceled (in shares)		(755,794)
Outstanding, ending balance (in shares)		14,932,168
Weighted Average Exercise Price
Outstanding, beginning balance, weighted average exercise price (in dollars per share)		$ 4.32
Granted, weighted average exercise price (in dollars per share)		15.87
Exercised, weighted average exercise price (in dollars per share)		2.67
Canceled, weighted average exercise price (in dollars per share)		8.34
Outstanding, ending balance, weighted average exercise price (in dollars per share)		$ 7.28
Weighted Average Remaining Contractual Term
Outstanding, weighted average remaining contractual term		8 years
Aggregate Intrinsic Value
Outstanding, aggregate intrinsic value		$ 234,653	$ 142,840
Vested
Vested, number of shares (in shares)		6,563,556
Vested, weighted average exercise price (in dollars per share)		$ 3.41
Vested, weighted average remaining contractual term		7 years 2 months 12 days
Vested, aggregate intrinsic value		$ 128,502

Common Stock and Stockholders_6

Common Stock and Stockholders' Equity (Deficit) - Restricted Stock Units Activity (Details) - RSUs	9 Months Ended
	Oct. 31, 2019$ / sharesshares
Number of RSUs
Outstanding, beginning balance (in shares) | shares	0
Granted (in shares) | shares	711,509
Vested, net of shares withheld for employee payroll taxes (in shares) | shares	(1,080)
Canceled (in shares) | shares	(2,108)
Outstanding, ending balance (in shares) | shares	708,321
Weighted Average Grant Date Fair Value Per Share
Outstanding, Beginning Balance, Weighted Average Grant Date Fair Value Per Share (in dollars per share) | $ / shares	$ 0
Granted, Weighted Average Grant Date Fair Value Per Share (in dollars per share) | $ / shares	30.69
Vested, net of shares withheld for employee payroll taxes, Weighted Average Grant Date Fair Value Per Share (in dollars per share) | $ / shares	32.51
Canceled, Weighted Average Grant Date Fair Value Per Share (in dollars per share) | $ / shares	46.26
Outstanding, Ending Balance, Weighted Average Grant Date Fair Value Per Share (in dollars per share) | $ / shares	$ 30.64

Common Stock and Stockholders_7

Common Stock and Stockholders' Equity (Deficit) - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	$ 7,347	$ 10,176	$ 19,392	$ 15,862
Non-cash charitable contribution expense			0	6,217
Cost of revenue
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	303	71	773	202
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	1,462	6,567	3,760	7,680
Sales and marketing
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	2,295	1,198	6,084	2,964
General and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	$ 3,287	$ 2,340	$ 8,775	$ 5,016

Deferred Revenue and Performa_3

Deferred Revenue and Performance Obligations - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018	Jan. 31, 2019
Revenue from Contract with Customer [Abstract]
Revenue recognized	$ (42,750)	$ (31,229)	$ (120,425)	$ (83,993)
Future estimated revenue related to performance obligations	$ 66,900,000		$ 66,900,000		$ 43,600,000

Deferred Revenue and Performa_4

Deferred Revenue and Performance Obligations - Deferred Revenue (Details) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Increase (Decrease) In Contract with Customer, Liability [Roll Forward]
Deferred revenue, beginning of period	$ 77,797	$ 49,577	$ 64,104	$ 38,169
Billings	45,577	33,398	136,945	97,570
Revenue recognized	(42,750)	(31,229)	(120,425)	(83,993)
Deferred revenue, end of period	$ 80,624	$ 51,746	$ 80,624	$ 51,746

Deferred Revenue and Performa_5

Deferred Revenue and Performance Obligations - Performance Obligations (Details)	Oct. 31, 2019
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-11-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, period	24 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-11-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, period

Net Loss Per Share - Calculatio

Net Loss Per Share - Calculation of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Numerator:
Net loss	$ (15,265)	$ (15,375)	$ (39,899)	$ (34,534)
Denominator:
Weighted average shares used in calculating net loss per share, basic and diluted (in shares)	75,992	21,598	61,628	21,226
Net loss per share, basic and diluted (in dollars per share)	$ (0.20)	$ (0.71)	$ (0.65)	$ (1.63)

Net Loss Per Share - Anti-dilut

Net Loss Per Share - Anti-dilutive Securities (Details) - shares shares in Thousands	9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	15,490	57,064
Redeemable convertible preferred stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	0	41,273
Shares subject to outstanding common stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	14,932	13,877
Unvested early exercised stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	140	404
Warrants to purchase common stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	0	750
Early exercised stock options in exchange for note receivable
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	0	250
Restricted stock awards purchased with promissory notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	216	510
Shares issuable pursuant to the 2019 Employee Stock Purchase Plan
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	202	0

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Income Tax Disclosure [Abstract]
Income tax expense	$ 244	$ 115	$ 725	$ 310

Geographic Information - Revenu

Geographic Information - Revenue by Location (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 42,750	$ 31,229	$ 120,425	$ 83,993
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	33,330	25,018	94,390	67,483
International
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 9,420	$ 6,211	$ 26,035	$ 16,510

Geographic Information - Additi

Geographic Information - Additional Information (Details) - Property, Plant and Equipment - Geographic Concentration Risk	9 Months Ended	12 Months Ended
	Oct. 31, 2019	Jan. 31, 2019
United States
Concentration Risk [Line Items]
Concentration risk, percentage	70.00%	48.00%
Canada
Concentration Risk [Line Items]
Concentration risk, percentage	30.00%	52.00%

Uncategorized Items - pagerduty

Label	Element	Value
Restricted Cash	us-gaap_RestrictedCash	$ 53,000
Restricted Cash	us-gaap_RestrictedCash	$ 2,448,000