Kaleyra 10-Q 10 May 21 2021 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2021	May 03, 2021
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Entity Registrant Name	KALEYRA, INC.
Entity Central Index Key	0001719489
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Shell Company	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Common Stock, Shares Outstanding		31,307,336
Entity Interactive Data Current	Yes
Entity File Number	001-38320
Entity Tax Identification Number	82-3027430
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	Via Marco D’Aviano, 2
Entity Address, City or Town	Milano MI
Entity Address, Country	IT
Entity Address, Postal Zip Code	20131
City Area Code	+39 02
Local Phone Number	288 5841
Document Quarterly Report	true
Document Transition Report	false
Common Stock, Par Value $0.0001 Per Share
Document Information [Line Items]
Title of Each Class	Common Stock, par value $0.0001 per share
Trading Symbol	KLR
Name of Each Exchange on Which Registered	NYSEAMER
Warrants, at an Exercise Price of $11.50 per Share of Common Stock
Document Information [Line Items]
Title of Each Class	Warrants, at an exercise price of $11.50 per share of Common Stock
Trading Symbol	KLR WS
Name of Each Exchange on Which Registered	NYSEAMER

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 35,507	$ 32,970
Short-term investments	4,287	4,843
Trade receivables, net	41,611	43,651
Prepaid expenses	1,233	1,447
Other current assets	5,222	2,134
Total current assets	87,860	85,045
Property and equipment, net	7,113	6,726
Intangible assets, net	7,156	7,574
Goodwill	16,612	16,657
Deferred tax assets	40	703
Other long-term assets	299	1,797
Total Assets	119,080	118,502
Current liabilities:
Accounts payable	46,135	51,768
Debt for forward share purchase agreements		483
Notes payable due to related parties	3,750	7,500
Lines of credit	4,439	5,273
Current portion of bank and other borrowings	8,082	10,798
Deferred revenue	3,107	3,666
Payroll and payroll related accrued liabilities	3,374	3,292
Other current liabilities	2,786	5,988
Total current liabilities	71,673	88,768
Long-term portion of bank and other borrowings	31,020	31,974
Long-term portion of notes payable	405	2,700
Long-term portion of employee benefit obligation	1,886	1,886
Other long-term liabilities	2,158	603
Total Liabilities	107,142	125,931
Commitments and contingencies (Note 14)
Stockholders’ equity (deficit):
Preferred stock, par value of $0.0001 per share; 1,000,000 shares authorized; no shares issued or outstanding
Common stock, par value of $0.0001 per share; 100,000,000 shares authorized as of March 31, 2021 and December 31, 2020; 33,728,675 shares issued and 30,930,617 shares outstanding as of March 31, 2021 and 33,086,745 shares issued and 30,288,687 shares outstanding as of December 31, 2020	3	3
Additional paid-in capital	122,252	93,628
Treasury stock, at cost; 2,798,058 shares as of March 31, 2021 and December 31, 2020	(30,431)	(30,431)
Accumulated other comprehensive loss	(1,725)	(2,826)
Accumulated deficit	(78,161)	(67,803)
Total stockholders’ equity (deficit)	11,938	(7,429)
Total liabilities and stockholders’ equity (deficit)	$ 119,080	$ 118,502

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares	Mar. 31, 2021	Dec. 31, 2020
Statement Of Financial Position [Abstract]
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	33,728,675	33,086,745
Common stock, shares outstanding	30,930,617	30,288,687
Treasury stock, shares	2,798,058	2,798,058

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
Revenue	$ 39,714,000	$ 33,633,000
Cost of revenue	33,390,000	28,902,000
Gross profit	6,324,000	4,731,000
Operating expenses:
Research and development	2,868,000	2,810,000
Sales and marketing	2,859,000	3,743,000
General and administrative	10,602,000	7,759,000
Total operating expenses	16,329,000	14,312,000
Loss from operations	(10,005,000)	(9,581,000)
Other income, net	45,000	42,000
Financial expense, net	(719,000)	(41,000)
Foreign currency income	355,000	168,000
Loss before income tax expense (benefit)	(10,324,000)	(9,412,000)
Income tax expense (benefit)	34,000	(589,000)
Net loss	$ (10,358,000)	$ (8,823,000)
Net loss per common share, basic and diluted	$ (0.34)	$ (0.44)
Weighted-average shares used in computing net loss per common share, basic and diluted	30,364,943	19,979,589

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (10,358)	$ (8,823)
Other comprehensive income (loss):
Foreign currency translation adjustments	1,105	(502)
Net change in unrealized gain on marketable securities, net of tax	(4)	4
Total other comprehensive income (loss)	1,101	(498)
Total comprehensive loss	$ (9,257)	$ (9,321)

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Stockholders' Equity (Deficit) (Unaudited) - USD ($) $ in Thousands		Total	Cowen	Common Stock	Common StockCowen	Additional Paid-in Capital	Additional Paid-in CapitalCowen	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Beginning balance at Dec. 31, 2019		$ (38,774)		$ 2		$ 2,143			$ 74	$ (40,993)
Beginning balance, shares at Dec. 31, 2019				19,977,113
Common stock repurchased in connection with forward share purchase agreements						2,587		$ (2,587)
Common stock repurchased in connection with forward share purchase agreements, shares				(235,169)				235,169
Forward share purchase agreement transactions		(271)				(271)
Stock-based compensation (RSUs)		6,204				6,204
Stock-based compensation (RSUs), shares				137,104
Common stock issued to settle a payable		527				527
Common stock issued to settle a payable, shares				140,000
Net loss		(8,823)								(8,823)
Other comprehensive loss		(498)							(498)
Ending balance at Mar. 31, 2020		(41,635)		$ 2		11,190		$ (2,587)	(424)	(49,816)
Ending balance, shares at Mar. 31, 2020				20,019,048				235,169
Beginning balance at Dec. 31, 2020		(7,429)		$ 3		93,628		$ (30,431)	(2,826)	(67,803)
Beginning balance, shares at Dec. 31, 2020				30,288,687				2,798,058
Conversion of Note			$ 2,295				$ 2,295
Conversion of Note, shares					303,171
Forfeiture of 2020 Sponsor Earnout Shares	[1]	1,244				1,244
Forfeiture of 2020 Sponsor Earnout Shares, shares	[1]			(469,343)
Forward share purchase agreement transactions		17,528				17,528
Stock-based compensation (RSUs)		5,011				5,011
Stock-based compensation (RSUs), shares				558,396
Warrants exercised for common stock		2,872				2,872
Warrants exercised for common stock, shares				249,706
Fair value of warrants		(326)				(326)
Net loss		(10,358)								(10,358)
Other comprehensive loss		1,101							1,101
Ending balance at Mar. 31, 2021		$ 11,938		$ 3		$ 122,252		$ (30,431)	$ (1,725)	$ (78,161)
Ending balance, shares at Mar. 31, 2021				30,930,617				2,798,058
[1]

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Stockholders' Equity (Deficit) (Unaudited) (Parenthetical)	Mar. 16, 2021
Sponsors
Percentage of 2020 sponsor earnout shares that have not vested been forfeited.	50.00%

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash Flows from Operating Activities:
Net loss	$ (10,358)	$ (8,823)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	909	638
Stock-based compensation, preference shares and others	4,560	6,308
Non-cash settlement of preference share liability		(2,486)
Provision for doubtful accounts	813	117
Realized gains on marketable securities	(2)
Employee benefit obligation	69	89
Change in fair value of warrant liability	1,263
Reversal of accrued interest on forward share purchase agreement	(659)
Non-cash interest expense	115	72
Deferred taxes	663	(323)
Change in operating assets and liabilities:
Trade receivables	440	1,710
Other current assets	(164)	1,111
Other long-term assets	1,499	(808)
Accounts payable	(4,128)	(5,694)
Other current liabilities	(2,735)	3,526
Deferred revenue	(474)	206
Long-term liabilities	(18)	1,505
Net cash used in operating activities	(8,207)	(2,852)
Cash Flows from Investing Activities:
Purchase of short-term investments		(3,179)
Sale of short-term investments	546	5,041
Purchase of property and equipment	(91)	(89)
Sale of property and equipment		16
Capitalized software development costs	(768)	(731)
Purchase of intangible assets	(2)	(6)
Net cash provided by (used in) investing activities	(315)	1,052
Cash Flows from Financing Activities:
Proceeds from (repayments on) in line of credit, net	(663)	1,721
Borrowings on term loans		8,800
Repayments on term loans	(1,869)	(5,463)
Repayments on notes	(3,750)
Repurchase of common stock in connection with forward share purchase agreements		(2,587)
Receipts (payments) related to forward share purchase agreements	17,045	(167)
Proceeds related to settlement of non-forfeited 2020 Sponsor Earnout Shares	1,244
Repayments on capital lease	(37)
Net cash provided by financing activities	11,970	2,304
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(911)	(454)
Net increase in cash, cash equivalents and restricted cash	2,537	50
Cash, cash equivalents and restricted cash, beginning of period	32,970	36,997
Cash, cash equivalents and restricted cash, end of period	35,507	37,047
Supplemental disclosures of cash flow information:
Cash paid for interest	368	153
Non-cash investing and financing activities
Change in value of forward share purchase agreements	(483)	271
Common stock issued to settle a payable		423
Note payable issued to settle a payable		$ 400
Stock-based compensation related to capitalized software development costs	170
Receivable for proceeds from the exercise of warrants	2,872
Conversion of convertible note to common stock	2,295
Restricted stock units granted to employees for bonuses	281
Fair value of warrant liability	344
Reclassification of warrant liability to additional paid-in capital upon exercise of warrants	$ (18)

Description of Organization and

Description of Organization and Business Operations	3 Months Ended
	Mar. 31, 2021
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Description of Organization and Business Operations	1. DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS Kaleyra, Inc., formerly GigCapital, Inc., (“Kaleyra,” the “Company,” “we,” “us,” and “our” refer to Kaleyra, Inc. and all of its consolidated subsidiaries) was incorporated in Delaware on October 9, 2017. The Company was formed for the purpose of effecting a merger, capital stock exchange, asset acquisition, stock purchase, reorganization or similar business combination with one or more businesses. On February 22, 2019, the Company entered into a stock purchase agreement (the “Stock Purchase Agreement”) by and among the Company, Kaleyra S.p.A., Shareholder Representative Services LLC, as representative for the holders of the ordinary shares of Kaleyra S.p.A. immediately prior to the closing of a business combination (the “Business Combination”), and all of the stockholders of all of the Kaleyra S.p.A. stock (collectively, such Kaleyra S.p.A. stockholders, the “Sellers”), for the purpose of the Company acquiring all of the shares of Kaleyra S.p.A. As a result of the Business Combination, the Company (headquartered in Milan, Italy) became a cloud communications software provider delivering secure Application Protocol Interfaces (“APIs”) and user interface based tools for business-to-consumer communications on a global basis. Kaleyra operates in the Communication Platform as a Service (“CPaaS”) market with operations in Italy, India, Dubai and the United States. Kaleyra’s underlying technology used in the platform is the same across all of its communication services which can generally be described as “omni-channel mobile first interactive notifications via a public or private cloud implementation”. These services include programmable voice/Interactive Voice Response (IVR) configurations, inbound/outbound messaging capabilities, hosted telephone numbers, conversational marketing solutions, and other types of IP communications services such as e-mail, push notifications, and WhatsApp®. On February 18, 2021, Kaleyra entered into an Agreement and Plan of Merger (the “Merger Agreement”), by and among Kaleyra, its wholly-owned subsidiary, Volcano Merger Sub, Inc. (“Merger Sub”), Vivial Inc. (“Vivial”) and GSO Special Situations Master Fund LP, solely in its capacity as the Stockholder Representative (the “Stockholder Representative”), for the acquisition of the business owned by Vivial known as mGage (“mGage”), a leading global mobile messaging provider (the transaction contemplated by the Merger Agreement, the “mGage Merger”). Kaleyra will acquire mGage for a total purchase price of approximately $215 million, subject to adjustments. The consideration to mGage shareholders will consist of cash in the amount of $195 million and 1,600,000 shares of Kaleyra common stock. The mGage Merger is expected to be consummated in the second fiscal quarter of 2021. In support of the consummation of the mGage Merger, on February 18, 2021, Kaleyra entered into subscription agreements (the “PIPE Subscription Agreements”), each dated February 18, 2021, with certain institutional investors (the “PIPE Investors”), pursuant to which, among other things, Kaleyra agreed to issue and sell, in private placements to close immediately prior to the closing of the mGage Merger, an aggregate of 8,400,000 shares of Kaleyra common stock (the “PIPE Shares”) to the PIPE Investors at $12.50 per share. Kaleyra also entered into convertible note subscription agreements (the “Convertible Notes”), each dated February 18, 2021, with certain institutional investors (the “Convertible Note Investors”), pursuant to which Kaleyra agreed to issue and sell, in private placements to close immediately prior to the closing of the mGage Merger, $200 million aggregate principal amount of unsecured convertible notes (the “Merger Convertible Notes”).

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2021
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation The accompanying condensed consolidated financial statements of the Company are unaudited, and have been prepared in accordance with accounting principles generally accepted in the United States of America (“US GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, this interim quarterly financial report does not include all disclosures required by US GAAP. In the opinion of our management, the unaudited condensed consolidated financial statements reflect all adjustments, consisting only of normal recurring adjustments, considered necessary to present fairly the financial position, results of operations and cash flows of Kaleyra and our consolidated subsidiaries for all periods presented. The results of operations for the three months ended March 31, 2021 are not necessarily indicative of the results to be expected in the future or for the full fiscal year. It is recommended that these condensed consolidated financial statements be read in conjunction with our consolidated financial statements and the notes thereto included in our 2020 Annual Report on Form 10-K filed with the Securities and Exchange Commission (the “SEC”) on March 16, 2021. These condensed consolidated financial statements have been prepared in conformity with US GAAP applicable for an “emerging growth company” as defined in the Jumpstart Our Business Startups Act (“JOBS Act”). The JOBS Act provides that an emerging growth company can take advantage of an extended transition period for complying with new or revised accounting standards. In particular, an emerging growth company can delay the adoption of certain accounting standards until those standards would apply to private companies. For the purpose of these condensed consolidated financial statements, the Company availed itself of an extended transition period for complying with new or revised accounting standards and, as a result, did not adopt new or revised accounting standards on the relevant dates on which adoption of such standards is required for public companies. Liquidity In connection with Accounting Standards Update (“ASU”) 2014-15, Presentation of Financial Statements-Going Concern (Subtopic 205-40), Disclosures of Uncertainties about an Entity’s Ability to Continue as a Going Concern, the Company evaluated its ability to continue as a going concern. The Company has negative cash flows from operating activities as of March 31, 2021. The condensed consolidated balance sheet as of March 31, 2021 includes total current assets of $87.9 million and total current liabilities of $71.7 million, resulting in net current assets of $16.2 million. The Business Combination generated significant obligations including (i) $13.1 million of liabilities related to non-recurring Business Combination transaction related costs; (ii) $15.0 million of deferred consideration to the Sellers in the Business Combination transaction; (iii) $13.2 million of net obligations under certain Shares Purchase Forward Agreements entered into by GigCapital, Inc. prior to the Business Combination; and (iv) $3.6 million of notes payable acquired as a result of the Business Combination. As of March 31, 2021, the Company still had the following remaining obligations as a result of the Business Combination: (i) $405,000 of liabilities related to non-recurring Business Combination transaction related costs; (ii) $3.75 million of deferred consideration to the Sellers in the Business Combination transaction. Subsequent to March 31, 2021, the Company entered into a new loan agreement with Simest S.p.A., and entered into an agreement to postpone repayment of the principal amounts due under the existing Line 3 of the long-term unsecured financing agreement with Banco Popolare di Milano S.p.A. for a period of six (6) months. See Note 21 – Subsequent Events – for further details. Considering the effects of the new financing and the renegotiation described above, and the typical financial cycle of the Company, management believes that the Company’s cash, cash flows from operations, debt and equity financings and availability of borrowings, will be sufficient to support its planned operations for at least the next 12 months from the date these condensed consolidated financial statements were issued. Business seasonality Historically, Kaleyra has experienced clear seasonality in its revenue generation, with slower traction in the first calendar quarter, and increasing revenues as the year progresses toward the higher revenues in messaging and notification services during the fourth calendar quarter. This patterned revenue generation behavior takes place due to Kaleyra’s customers sending more messages to their end-user customers who are engaged in consumer transactions at the end of the calendar year, resulting in an increase in notifications of electronic payments, credit card transactions and e-commerce. Principles of Consolidation The condensed consolidated financial statements include the Company and its wholly owned subsidiaries, including Kaleyra S.p.A., Solutions Infini, Buc Mobile and The Campaign Registry, which represent its major operations. All significant intercompany balances and transactions have been eliminated in consolidation. Use of Estimates The preparation of financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. These estimates are used for, but not limited to, allowance for doubtful accounts; valuation of the Company’s stock-based awards; recoverability of long-lived and intangible assets; capitalization and useful life of the Company’s capitalized internal-use software development costs; fair value of acquired intangible assets and goodwill; accruals and contingencies, including tax related provisions and the valuation allowance on deferred taxes. Estimates are based on historical experience and on various assumptions that the Company believes are reasonable under current circumstances. However, future events are subject to change and best estimates and judgments may require further adjustments; therefore, actual results could differ materially from those estimates. Management periodically evaluates such estimates and they are adjusted prospectively based upon such periodic evaluation. Actual results and outcomes may differ from management’s estimates and assumptions due to risks and uncertainties, including uncertainty in the current economic environment due to the recent outbreak of a novel strain of the coronavirus (“COVID-19”). Concentration of Credit Risk Financial instruments that potentially expose the Company to a concentration of credit risk consist primarily of cash, restricted cash and cash equivalents, short-term investments and trade receivables. The Company maintains cash and cash equivalents and short-term investments with financial institutions that management believes are financially sound. The Company sells its services to a wide variety of customers. If the financial condition or results of operations of any significant customers deteriorate substantially, operating results could be adversely affected. To reduce credit risk, management performs ongoing credit evaluations of the financial condition of significant customers. The Company maintains reserves for estimated credit losses on customer accounts when considered necessary. Actual credit losses may differ from the Company’s estimates. In the three months ended March 31, 2021 and 2020, there were no customers that individually accounted for more than 10% of the Company’s consolidated total revenue. As of March 31, 2021 and December 31, 2020, no customers and one individual customer, respectively, accounted for more than 10% of the Company’s consolidated total trade receivables. As of December 31, 2020, trade receivables accounted for by that one customer amounted to $4.5 million. Warrant Liability The Company accounts for warrants for shares of the Company’s common stock that are not indexed to its own stock as liabilities at fair value on the condensed consolidated balance sheets. The warrants are subject to remeasurement at each balance sheet date and any change in fair value is recognized in “Financial expense, net” on the condensed consolidated statements of operations. The liability is included in the condensed consolidated balance sheet line item “Other long-term liabilities”. The Company will continue to adjust the liability for changes in fair value until the earlier of the exercise or expiration of the common stock warrants. At that time, the portion of the warrant liability related to the common stock warrants will be reclassified to additional paid-in capital. Recent Accounting Pronouncements In May 2021, the Financial Accounting Standards Board (“FASB”) issued ASU 2021-04 “Earnings Per Share (Topic 260), Debt—Modifications and Extinguishments (Subtopic 470-50), Compensation— Stock Compensation (Topic 718), and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815- 40) Issuer’s Accounting for Certain Modifications or Exchanges of Freestanding Equity-Classified Written Call Options” which clarifies and reduces diversity in an issuer’s accounting for modifications or exchanges of freestanding equity-classified written call options (for example, warrants) that remain equity classified after modification or exchange. An entity should measure the effect of a modification or an exchange of a freestanding equity-classified written call option that remains equity classified after modification or exchange as follows: i) for a modification or an exchange that is a part of or directly related to a modification or an exchange of an existing debt instrument or line-of-credit or revolving-debt arrangements (hereinafter, referred to as a “debt” or “debt instrument”), as the difference between the fair value of the modified or exchanged written call option and the fair value of that written call option immediately before it is modified or exchanged; ii) for all other modifications or exchanges, as the excess, if any, of the fair value of the modified or exchanged written call option over the fair value of that written call option immediately before it is modified or exchanged. The amendments in this Update are effective for all entities for fiscal years beginning after December 15, 2021, including interim periods within those fiscal years. An entity should apply the amendments prospectively to modifications or exchanges occurring on or after the effective date of the amendments. The Company is currently evaluating the impact of this standard on its condensed consolidated financial statements. In January 2021, the FASB issued ASU 2021-01 “Reference Rate Reform (Topic 848)”, which clarifies that certain optional expedients and exceptions in Topic 848 for contract modifications and hedge accounting apply to derivatives that are affected by the discounting transition. Specifically, certain provisions in Topic 848, if elected by an entity, apply to derivative instruments that use an interest rate for margining, discounting, or contract price alignment that is modified as a result of reference rate reform. Amendments in this Update to the expedients and exceptions in Topic 848 capture the incremental consequences of the scope clarification and tailor the existing guidance to derivative instruments affected by the discounting transition. The amendments in this Update apply to all entities that elect to apply the optional guidance in Topic 848. The amendments do not apply to contract modifications made after December 31, 2022 or new hedging relationships entered into after December 31, 2022. For existing hedging relationships evaluated for effectiveness in periods after December 31, 2022, an exception is made for those hedging relationships that apply certain optional expedients in which the accounting effects are recorded through the end of the hedging relationship (including periods after December 31, 2022). The Company is currently evaluating the impact of the optional expedients and exceptions of this standard on its condensed consolidated financial statements. In June 2020, the FASB issued ASU 2020-05 “Revenue from contracts with customers (Topic 606) and Leases (Topic 842): Effective dates for certain entities” (“ASU 2020-05”), which provides a limited one year deferral of the effective dates of the following updates (including amendments issued after the issuance of the original update) to provide immediate, near-term relief for certain entities for whom these updates are either currently effective or imminently effective: i) ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) (“Revenue”); ii) ASU No. 2016-02, Leases (Topic 842) (“Leases”). In November 2019, the FASB issued ASU 2019-10 “Financial Instruments - Credit Losses (Topic 326), Derivatives and Hedging (Topic 815), and Leases (Topic 842): Effective Dates” (“ASU 2019-10”). The amendments in this ASU amended certain effective dates for the above ASU 2016-02, Leases (including amendments issued after the issuance of the original ASU). The effective dates for Leases after applying ASU 2019-10 were as follows: public business entities, excluding emerging growth companies and smaller reporting companies, for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. All other entities for fiscal years beginning after December 15, 2020, and interim periods within fiscal years beginning after December 15, 2021. Early application continues to be allowed. In ASU 2019-10, the FASB noted that challenges associated with transition to a major update are often magnified for private companies and smaller public companies. Those challenges have been significantly amplified by the current business and capital market disruptions caused by the COVID-19 pandemic. For this reason, the FASB issued the amendments in ASU 2020-05 by deferring the effective date for one additional year for entities in the “all other” category that have not yet issued their financial statements (or made financial statements available for issuance) reflecting the adoption of Leases. Therefore, under the amendments, Leases (Topic 842) is effective for entities within the “all other” category for fiscal years beginning after December 15, 2021, and interim periods within fiscal years beginning after December 15, 2022. Early application continues to be permitted, which means that an entity may choose to implement Leases before those deferred effective dates. While the Company expects the adoption of the Leases standard (Leases Topic 842) to result in a material increase to the reported assets and liabilities, the Company has not yet determined the full impact that the adoption of this standard will have on its condensed consolidated financial statements. In February 2020, the FASB issued ASU 2020-02 “Financial Instruments—Credit Losses (Topic 326) and Leases (Topic 842), Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 119 and Update to SEC Section on Effective Date Related to Accounting Standards Update No. 2016-02, Leases (Topic 842). This ASU applies to all registrants that are creditors in loan transactions that, individually or in the aggregate, have a material effect on the registrant’s financial condition. This ASU guidance is applicable upon a registrant’s adoption of Accounting Standards Codification (“ASC”) Topic 326. On November 15, 2019, the FASB delayed the effective date of ASC Topic 326 for certain small public companies and other private companies. As amended, the effective date of ASC Topic 326 was delayed until fiscal years beginning after December 15, 2022 for U.S. Securities and Exchange Commission (“SEC”) filers that are eligible to be smaller reporting companies under the SEC’s definition, as well as private companies and not-for-profit entities. The Company is currently evaluating the impact of this standard on its condensed consolidated financial statements. In November 2019, the FASB issued ASU 2019-10 “Financial Instruments—Credit Losses (Topic 326), Derivatives and Hedging (Topic 815), and Leases (Topic 842): Effective Dates”. The amendments in ASU 2019-10 amend certain effective dates for the following major ASUs (including amendments issued after the issuance of the original ASU): a) b) A In August 2018, the FASB issued ASU 2018-15, “Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That is a Service Contract”. This standard aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. The standard is effective for public business entities for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. For all other entities, the amendments in this ASU are effective for annual reporting periods beginning after December 15, 2020, and interim periods within annual periods beginning after December 15, 2021. Early adoption is permitted, including adoption in any interim period, for all entities. The amendments in this ASU should be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. The Company adopted the amendments, and the adoption did not have a material impact on its condensed consolidated financial statements. In August 2018, the FASB issued ASU 2018-14, “Compensation—Retirement Benefits—Defined Benefit Plans—General (Subtopic 715-20)”, which modifies the disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. The amendments are effective for fiscal years ending after December 15, 2020 for public business entities and for fiscal years ending after December 15, 2021 for all other entities. Early adoption is permitted for all entities. The Company adopted the amendments, and the adoption did not have a material impact on its condensed consolidated financial statements. In January 2017, the FASB issued ASU 2017-04, “Simplifying the Test for Goodwill Impairment”, which removes the second step of the goodwill impairment test that requires a hypothetical purchase price allocation. A goodwill impairment will now be the amount by which a reporting unit's carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. This guidance is effective prospectively for public business entities for annual or interim goodwill impairment tests in fiscal years beginning after December 15, 2020 and for annual or interim goodwill impairment tests in fiscal years beginning after December 15, 2021 for other entities. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The Company is currently evaluating the impact of this standard on its condensed consolidated financial statements. In June 2016, the FASB issued ASU 2016-13, “Financial Instruments—Credit Losses: Measurement of Credit Losses on Financial Instruments”, which changes the impairment model for most financial assets. The new model uses a forward-looking expected loss method, which will generally result in earlier recognition of allowances for losses. In November 2018, the FASB issued ASU 2018-19, “Codification Improvements to Topic 326, Financial Instruments— Credit Losses”, which clarifies that receivables arising from operating leases are not within the scope of Topic 326, Financial Instruments—Credit Losses. Instead, impairment of receivables arising from operating leases should be accounted for in accordance with Topic 842, Leases. These ASUs are effective for public entities for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years, and for other entities for fiscal years beginning after December 15, 2020 and interim periods within fiscal years beginning after December 15, 2021. Earlier application is permitted. As noted above, the effective date of this ASU has now been delayed for two years by the issuance of ASU 2019-10. The Company is currently evaluating the impact of this standard on its condensed consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, “Leases”, which was further clarified by ASU 2018-10, “Codification Improvements to Topic 842, Leases”, and ASU 2018-11, “Leases—Targeted Improvements”, both issued in July 2018. ASU 2016-02 affects all entities that lease assets and will require lessees to recognize a lease liability and a right-of-use asset for all leases (except for short-term leases that have a duration of less than one year) as of the date on which the lessor makes the underlying asset available to the lessee. For lessors, accounting for leases is substantially the same as in prior periods. ASU 2018-10 clarifies or corrects unintended application of guidance related to ASU 2016-02. The amendment affects narrow aspects of ASU 2016-02 related to the implicit rate in the lease, impairment of the net investment in the lease, lessee reassessment of lease classification, lessor reassessment of lease term and purchase options, variable payments that depend on an index or rate and certain transition adjustments. ASU 2018-11 adds a transition option for all entities and a practical expedient only for lessors. The transition option allows entities to not apply the new lease standard in the comparative periods they present in their financial statements in the year of adoption. Under the transition option, entities can opt to continue to apply the legacy guidance in ASC 840, “Leases”, including its disclosure requirements, in the comparative prior periods presented in the year they adopt the new lease standard. Entities that elect this transition option will still be required to adopt the new leases standard using the modified retrospective transition method required by the standard, but they will recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption rather than in the earliest period presented. The new standards are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years for a public business entity. For all other entities, the amendments in this ASU are effective for fiscal years beginning after December 15, 2019, and interim periods within fiscal years beginning after December 15, 2020. Earlier application is permitted. As noted above, the effective date of this ASU has now been delayed for two years by the issuance of ASU 2020-05. While the Company expects the adoption of these standards to result in a material increase to the reported assets and liabilities, the Company has not yet determined the full impact that the adoption of this standard will have on its condensed consolidated financial statements.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements	3. FAIR VALUE MEASUREMENTS The following tables provide the assets and liabilities measured at fair value on a recurring basis as of March 31, 2021 and December 31, 2020 (in thousands): Fair Value Hierarchy as of March 31, 2021 Aggregate Level 1 Level 2 Level 3 Fair Value Assets: Mutual funds (1) $ 593 $ — $ — $ 593 Certificates of deposit (2) — 3,694 — 3,694 Total Assets $ 593 $ 3,694 $ — $ 4,287 Liabilities: Interest Rate Swap (3) $ — $ 92 $ — $ 92 Warrant liability (4) — 1,589 — 1,589 Total Liabilities $ — $ 1,681 $ — $ 1,681 (1) Included in the condensed consolidated balance sheet line item “Short-term investments”. (2) Included in the condensed consolidated balance sheet line item “Short-term investments”, with maturity terms between 4 and 12 months held in India. (3) Included in the condensed consolidated balance sheet line item “Other long-term liabilities”. (4) Included in the condensed consolidated balance sheet line item “Other long-term liabilities”. See Note 17 – Warrants – for further details. Fair Value Hierarchy as of December 31, 2020 Aggregate Level 1 Level 2 Level 3 Fair Value Assets: Mutual funds (1) $ 590 $ — $ — $ 590 Certificates of deposit (2) — 4,253 — 4,253 Total Assets $ 590 $ 4,253 $ — $ 4,843 Liabilities Interest Rate Swap (3) $ — $ 109 $ — $ 109 Debt for forward share purchase agreements (4) — 483 — 483 Total Liabilities $ — $ 592 $ — $ 592 (1) Included in the condensed consolidated balance sheet line item “Short-term investments”. (2) Included in the condensed consolidated balance sheet line item “Short-term investments”, with maturity terms between 4 and 12 months held in India. (3) Included in the condensed consolidated balance sheet line item “Other long-term liabilities”. (4) Based on the information available at the reporting date, debt for forward share purchase agreements have been determined as the present value to be paid at settlement in case the counterparty exercises the put option. The values of short-term investments as of March 31, 2021 and as of December 31, 2020 were as follows (in thousands): As of March 31, As of December 31, 2021 2020 Cost Unrealized gains Unrealized losses Fair value Cost Unrealized gains Unrealized losses Fair value Mutual funds $ 587 $ 6 $ — $ 593 $ 580 $ 10 $ — $ 590 Certificates of deposit 3,694 — — 3,694 4,253 — — 4,253 There were no transfers of liabilities into or out of Level 2 or Level 3 for the three months ended March 31, 2021 and the year ended December 31, 2020. Net realized and unrealized (gains) and losses related to the Company’s preference shares, which were classified as Level 3 liabilities during the quarter ended March 31, 2020, are reported in the condensed consolidated statements of operations as follows (in thousands): Research and development Sales and marketing General and administrative Financial income (expense), net Foreign currency Income (loss) Total Three months ended March 31, 2020 Liabilities: Preference shares $ (941 ) $ (372 ) $ (756 ) $ (417 ) $ — $ (2,486 )

Derivative Financial Instrument

Derivative Financial Instrument	3 Months Ended
	Mar. 31, 2021
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	4. DERIVATIVE FINANCIAL INSTRUMENTS The gross notional amount of interest rate swap derivative contracts not designated as hedging instruments, outstanding as of March 31, 2021 and December 31, 2020, was €8.6 million ($10.0 million) and €9.5 million ($11.6 million), respectively. The amount and location of the gains (losses) in the condensed consolidated statements of operations related to derivative contracts is as follows (in thousands): Three Months Ended March 31, Derivatives Not Designed As Hedging Instruments Line Items 2021 2020 Interest Rate Swap Financial expense, net $ 13 $ 7 Total $ 13 $ 7 The following table presents the fair value and the location of derivative contracts reported in the condensed consolidated balance sheets (in thousands): As of March 31, As of December 31, Derivatives Not Designed As Hedging Instruments Line Items 2021 2020 Interest Rate Swap Other long-term liabilities $ 92 $ 109 Total $ 92 $ 109

Goodwill and Intangible Assets,

Goodwill and Intangible Assets, Net	3 Months Ended
	Mar. 31, 2021
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets, Net	5. GOODWILL AND INTANGIBLE ASSETS, NET Goodwill Goodwill as of March 31, 2021 and December 31, 2020 was as follows (in thousands): Balance as of December 31, 2020 $ 16,657 Effect of exchange rate (45 ) Balance as of March 31, 2021 $ 16,612 Intangible assets, net Intangible assets consisted of the following (in thousands): As of March 31, 2021 As of December 31, 2020 Gross Accumulated amortization Net Gross Accumulated amortization Net Amortizable Intangible Assets: Developed technology $ 2,737 $ 1,731 $ 1,006 $ 2,742 $ 1,576 $ 1,166 Customer relationships 8,903 2,829 6,074 8,925 2,598 6,327 Patent 127 51 76 130 49 81 Total amortizable intangible assets $ 11,767 $ 4,611 $ 7,156 $ 11,797 $ 4,223 $ 7,574 Amortization expense was $403,000 and $422,000 for the three months ended March 31, 2021 and 2020, respectively. Total estimated future amortization expense as of is as follows (in thousands): As of March 31, 2021 2021 (remaining nine months) $ 1,004 2022 1,160 2023 1,056 2024 853 2025 639 2026 and thereafter 2,444 Total $ 7,156

Other Assets

Other Assets	3 Months Ended
	Mar. 31, 2021
Other Assets [Abstract]
Other Assets	6. OTHER ASSETS Other current assets consisted of the following (in thousands): As of March 31, As of December 31, 2021 2020 VAT receivables $ 236 $ 1,347 Receivables from suppliers 1,249 542 Credit for tax other than income tax 589 119 Income tax receivables 94 69 Other receivables 3,054 57 Total other current assets $ 5,222 $ 2,134 Other long-term assets consisted of the following (in thousands): As of March 31, As of December 31, 2021 2020 Non-current income tax credit (advances and tax reduced at sources) $ 54 $ 1,509 Miscellaneous 245 288 Total other long-term assets $ 299 $ 1,797

Bank and Other Borrowings

Bank and Other Borrowings	3 Months Ended
	Mar. 31, 2021
Bank And Other Borrowings [Abstract]
Bank and Other Borrowings	7. BANK AND OTHER BORROWINGS Credit line facilities As of March 31, 2021, the Company had credit line facilities granted for a total amount of $7.5 million, of which $4.4 million had been used. As of December 31, 2020, the Company had available credit line facilities for $7.7 million, of which $5.3 million had been used. The credit lines denominated in Euro may be drawn upon at variable interest rates in the following range: 0.6% - 7.6%. The weighted average interest rate on the credit line facilities outstanding as of March 31, 2021, was 1.11%. Long-term bank and other borrowings Long-term bank and other borrowings consist of the following (in thousands): Interest Nominal Rate As of March 31, As of December 31, Interest As of March 31, As of December 31, 2021 2020 Maturity Contractual Rate 2021 2020 UniCredit S.p.A. (Line A Tranche (1) $ 2,750 $ 3,235 July 2023 Euribor 3 months + 3.10% 2.80 % 2.80 % UniCredit S.p.A. (Line A Tranche (2) 132 153 November 2023 Euribor 3 months + 3.10% 2.80 % 2.80 % UniCredit S.p.A. (Line B) 2,656 3,030 May 2024 Euribor 3 months + 2.90% 2.60 % 2.60 % UniCredit S.p.A. (Line C) 2,153 2,521 August 2023 Euribor 3 months + 3.90% 3.36 % 3.36 % Intesa Sanpaolo S.p.A. (Line 1) 744 931 April 2022 Euribor 3 months + 1.80% 1.26 % 1.26 % Intesa Sanpaolo S.p.A. (Line 2) 3,824 4,292 April 2024 Euribor 3 months + 2.60% 2.06 % 2.06 % Intesa Sanpaolo S.p.A. (Line 3) 9,265 9,688 June 2026 Euribor 3 months + 1.65% 1.11 % 1.11 % Intesa Sanpaolo S.p.A. (Line 4) 6,439 6,734 July 2026 Euribor 3 months + 1.70% 1.16 % 1.16 % UBI Banca S.p.A. (Line 1) 125 209 August 2021 Euribor 3 months + 1.25% 1.25 % 1.25 % UBI Banca S.p.A. (Line 2) 692 1,031 October 2021 Euribor 3 months +1.95% 1.41 % 1.41 % Monte dei Paschi di Siena S.p.A. (Line 1) 256 328 April 2022 0.95 % 0.95 % 0.95 % Monte dei Paschi di Siena S.p.A. (Line 2) 1,949 2,037 June 2023 1.50 % 1.50 % 1.50 % Banco BPM S.p.A. (Line 1) 912 1,056 June 2023 Euribor 3 months + 2.00% 2.00 % 2.00 % Banco BPM S.p.A. (Line 3) 6,086 6,355 September 2024 Euribor 3 months + 3.00% 2.46 % 2.46 % Simest 1 293 307 December 2023 0.50 % 0.50 % 0.50 % Simest 2 291 305 December 2023 0.50 % 0.50 % 0.50 % Simest 3 535 560 December 2023 0.50 % 0.50 % 0.50 % Total bank and other borrowings 39,102 42,772 Less: current portion 8,082 10,798 Total long-term portion $ 31,020 $ 31,974 All bank and other borrowings are unsecured borrowings of Kaleyra. On February 23, 2021, Kaleyra entered into an amendment to the existing unsecured loan agreement with Intesa Sanpaolo S.p.A. (the “Intesa Sanpaolo S.p.A. - Line 1”) and an amendment to the existing unsecured loan agreement with Intesa Sanpaolo S.p.A. (the “Intesa Sanpaolo S.p.A. - Line 2”). The amendments each provide that certain financial covenants be amended in order to make them less restrictive to the Company, in particular as they relate to the previously agreed net financial position/equity ratio and the net financial position/gross operating income ratio. On March 9, 2021 and March 10, 2021, respectively, Kaleyra received the approval by UniCredit S.p.A. to postpone repayment of the principal amounts due under the existing Line A Tranche (2), Line B and Line C of the long-term financing agreements with UniCredit S.p.A. for a period of six (6) months starting from March 1, 2021 until August 8, 2021, and under Line A Tranche (1) of the long-term financing agreement with UniCredit S.p.A. starting from February 1, 2021 until July 31, 2021. Consequently, the repayment schedule under all financing agreements mentioned above has been extended for the period equal to that of the six (6) month suspension period. Subsequent to March 31, 2021, Kaleyra received the approval by Banco Popolare di Milano S.p.A. to postpone repayment of the principal amounts due under the existing Line 3 of the long-term financing agreement with Banco Popolare di Milano S.p.A. for a period of six (6) months starting from March 31, 2021 until September 30, 2021. See Note 21 – Subsequent Events – for further details. Subsequent to March 31, 2021, Kaleyra entered into a new general unsecured loan agreement with Simest S.p.A. for a total of $3.6 million (€3.0 million at the April 15, 2021 exchange rate). See Note 21 – Subsequent Events – for further details. As of March 31, 2021, all of the available long-term facilities were drawn in full. Interest expense on bank and other borrowings was $190,000 for the three months ended March 31, 2021 and $218,000 for the three months ended March 31, 2020. As of March 31, 2021, the Company is obliged to make payments as follows (in thousands): As of March 31, 2021 2021 (remaining nine months) $ 5,807 2022 10,819 2023 10,537 2024 6,160 2025 3,626 2026 and thereafter 2,153 Total $ 39,102

Debt for Forward Share Purchase

Debt for Forward Share Purchase Agreements	3 Months Ended
	Mar. 31, 2021
Debt Disclosure [Abstract]
Debt for Forward Share Purchase Agreements	8. DEBT FOR FORWARD SHARE PURCHASE AGREEMENTS As of March 31, 2021, the Company’s debt for forward share purchase agreements amounted to zero. Yakira Capital Management (“Yakira”) During the period from January 25, 2021 through March 2, 2021, Yakira provided notice to the Company that it sold all but 219 of the 43,930 shares that it held on December 31, 2020 in the open market at a price above $11.00 per share that were subject to the Third Yakira Amendment. On March 29, 2021, Yakira provided notice to the Company that it would not require the Company to purchase its remaining 219 shares by the term date of March 31, 2021. Following the sale of shares and the lapse of the Third Yakira Amendment mentioned above, the forward share purchase agreement with Yakira was terminated pursuant to its terms, and, as a result, the Company has no further obligations under the Yakira Purchase Agreement. Nomura Global Financial Products On February 25, 2021, in accordance with the terms of the agreement (the “Confirmation”) with Nomura Global Financial Products, Inc. (“NGFP”), NGFP fully terminated the Forward Transaction and made a payment in the aggregate amount of $17.0 million to Kaleyra. Following the cash settlement of the Forward Transaction mentioned above, the Forward Transaction with NGFP has terminated pursuant to the terms of the Confirmation, and, as a result, the Company has no further obligations.

Notes Payable

Notes Payable	3 Months Ended
	Mar. 31, 2021
Debt Disclosure [Abstract]
Notes Payable	9. NOTES PAYABLE Notes payable to the Sellers As consideration for the Business Combination, on November 25, 2019 the Company issued unsecured convertible promissory notes to each of Esse Effe and Maya in the amount of $6.0 million and $1.5 million, respectively, (the “Business Combination Convertible Notes”) and also issued other unsecured promissory notes to each of Esse Effe and Maya in the identical respective amounts (the “Non-convertible Notes”). The Non-convertible Notes held by Esse Effe and Maya were paid in full during fiscal year 2020 and no amount remains outstanding for such notes as of March 31, 2021. Business Combination Convertible Notes As of March 31, 2021, the amount outstanding for the Business Combination Convertible Notes was $3.75 million and accrued interest on the Business Combination Convertible Notes was $65,000. The Business Combination Convertible Notes are classified as “Notes payable due to related parties” in the accompanying condensed consolidated balance sheets. The accrued interest payable is included in “Other current liabilities” in the accompanying condensed consolidated balance sheets. Interest on the Business Combination Convertible Notes will accrue at a fixed interest rate equal to the one-year US dollar LIBOR interest rate published in The Wall Street Journal on the Business Combination Date, plus a margin of one percent (1%) per annum. Interest will be due and payable annually on each of (1) the date which is the twelve-month anniversary of the Business Combination Date and (2) on the date which is the twenty-four-month anniversary of the Business Combination Date. All interest shall be computed on the basis of a 365-day year and the actual number of days elapsed. Fifty percent (50%) of the outstanding principal balance of these notes was due and payable on the fifteen-month anniversary of the Business Combination Date. The remaining outstanding principal balance of these notes plus all accrued and unpaid interest and fees due under these notes will be due and payable in full on the twenty-four-month anniversary of the Business Combination Date. In the event that the Company receives, at any time while principal on these notes remains outstanding, cash proceeds of an equity financing (the “Financing”) in an amount not less than $50.0 million (the “Notes Financing Proceeds”), fifty percent (50%) of the outstanding principal balance of these notes will be due and payable no later than ten business days after the Company receives such Notes Financing Proceeds. In the event of a Financing where at any time the Company receives cash proceeds of such Financing in an amount not less than $75.0 million (the “Payoff Financing Proceeds”), one hundred percent In the event that these Business Combination Convertible Notes are not paid in full on or before the applicable Maturity Date, then at any time after the sixtieth business day after the Maturity Date, assuming payment in full has not been made prior to such date, the outstanding principal amount of these notes, together with all accrued but unpaid interest on these notes, may be converted into shares of Company common stock, in part or in whole, at the option of the holder of these notes by providing written notice at least three business days prior to the date of conversion. A conversion of any portion of these notes into shares of Company common stock will be effected at a conversion price equal to the Current Market Price as of the date of such conversion (the “Conversion Price”). The term “Current Market Price” means, generally, the average VWAP for the twenty consecutive trading days ending on the date that is five trading days prior to the date of conversion. The term “VWAP” means, for any trading day, the volume weighted average trading price of the Company’s common stock for such trading day on the NYSE (or if the Company’s common stock is no longer traded on the NYSE, on such other exchange as the Company’s common stock is then traded). On the fifteen-month anniversary of the Business Combination Date or February 25, 2021, the fifty percent (50%) of the previously outstanding amount of Business Combination Convertible Notes held by Esse Effe and Maya was repaid, with a total of $3.0 million and $750,000 in principal and $176,000 and $44,000 in accrued interest being paid to Esse Effe and Maya, respectively, pursuant to the terms of the Business Combination Convertible Notes. Notes payable - Other On April 16, 2020, the Company entered into a Settlement Agreement and Release (the “Settlement Agreement”) with its Business Combination financial advisory service firms, Cowen and Company, LLC (“Cowen”) and Chardan Capital Markets, LLC, (“Chardan” and collectively the “Service Firms”), pursuant to which it agreed to pay an affiliate of Cowen, Cowen Investments II LLC (“Cowen Investments”), and Chardan, in full satisfaction of all amounts owed to the Service Firms as of December 31, 2019, $5.4 million in the aggregate, as follows: (i) $2.7 million in the aggregate in common stock of the Company (the “Settlement Shares”) to be issued the business day prior to the filing of a resale registration statement for such Settlement Shares (the “Bank Resale Registration Statement”), (ii) convertible notes totaling $2.7 million in the aggregate with a maturity date three years after issuance and bearing interest at five percent (5%) per annum (but with lower interest rates if the notes are repaid earlier than one year or two years after issuance) and with interest paid in arrears to the payee on March 15, June 15, September 15 and December 15 of each year, with such convertible notes to also be issued the business day prior to the filing of the Resale Registration Statement and (iii) in the event that the Beneficial Ownership Limitation (as defined below) would otherwise be exceeded upon delivery of the Settlement Shares above, a warrant agreement also to be entered into with and issued to the Services Firms the business day prior to the filing of the Resale Registration Statement, whereby the amount of common stock of the Company by which the Beneficial Ownership Limitation would otherwise have been exceeded upon delivery of the Settlement Shares will be substituted for by warrants with an exercise price of $0.01 per share issued pursuant to a Warrant Agreement (the “Warrant Agreement”) and the common stock underlying the Warrant Agreement (the “Warrant Shares”). The Beneficial Ownership Limitation shall initially be 4.99% of the number of shares of the common stock outstanding of the Company immediately after giving effect to the issuance of these shares of common stock. The number of Settlement Shares was calculated using as the price per Settlement Share an amount equal to a fifteen percent (15%) discount to the ten-day (10-day) trailing dollar volume-weighted average price for the common stock of the Company on the NYSE American LLC stock exchange (the “VWAP”) on the business day immediately prior to the date on which Kaleyra filed the Resale Registration Statement. In addition, the price per share for determining the number of shares of common stock of the Company to be issued upon the conversion of the convertible notes shall be a five percent (5%) premium to the ten-day (10-day) trailing VWAP as of the date immediately prior to the issuance date of the convertible notes, rounded down to the nearest whole number. On May 1, 2020, in connection with the Settlement Agreement, the Company issued: (i) an aggregate of 440,595 Settlement Shares to Cowen Investments and Chardan, consisting of 374,506 Settlement Shares issued to Cowen Investments, and 66,089 Settlement Shares issued to Chardan, which resulted in a $0.2 million loss on settlement on the issuance date of May 1, 2020; and (ii) convertible promissory notes in the aggregate principal amount of $2.7 million to Cowen Investments and Chardan, consisting of a convertible promissory note in the principal amount of $2.3 million issued to Cowen Investments (the “Cowen Note”) and a convertible promissory note in the principal amount of $405,000 issued to Chardan (the “Chardan Note”). The unpaid principal of the Cowen Note is convertible at the option of Cowen Investments into 303,171 shares of common stock of the Company, if there has been no principal reduction, and the unpaid principal of the Chardan Note is convertible at the option of Chardan into 53,501 shares of common stock of the Company, if there has been no principal reduction. As the Beneficial Ownership Limitation was not triggered by the issuance of the Settlement Shares, no Warrant Agreement was necessary and no warrants were issued. As of December 31, 2020, the outstanding amount of the Cowen Note was $2.3 million and accrued interest was $63,000. As of December 31, 2020, the outstanding amount of the Chardan Note was $405,000 and accrued interest was $14,000. These notes payable are included in “Long-term portion of notes payable” and the accrued interest payable is included in “Other current liabilities” in the accompanying condensed consolidated balance sheets. On February 4, 2021, Cowen Investments elected to convert the outstanding amount of the Cowen Note into 303,171 shares of common stock pursuant to the terms of the Cowen Note, and, as a result, the Company has no further obligations with respect to the Cowen Note. As of March 31, 2021, the outstanding amount of the Chardan Note was $405,000 and accrued interest was $19,000.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	3 Months Ended
	Mar. 31, 2021
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	10. ACCUMULATED OTHER COMPREHENSIVE LOSS The accumulated balances related to each component of accumulated other comprehensive loss are as follows (in thousands): Cumulative Foreign Currency Translation Adjustment Cumulative net unrealized gain (loss) on marketable securities, net of tax Accumulated Other Comprehensive Income (Loss) As of December 31, 2020 $ (2,836 ) $ 10 $ (2,826 ) Other comprehensive income (loss), net of tax 1,105 (4 ) 1,101 As of March 31, 2021 $ (1,731 ) $ 6 $ (1,725 )

Preference Shares Liabilities

Preference Shares Liabilities	3 Months Ended
	Mar. 31, 2021
Preference Shares Liabilities [Abstract]
Preference Shares Liabilities	11. PREFERENCE SHARES LIABILITIES Preference shares liabilities amounting to zero as of March 31, 2021 and December 31, 2020, represented the Company’s obligation to purchase in 2020 the preference shares from certain employees of Solutions Infini as a part of the Solutions Infini 2018 Purchase Agreement. During fiscal year 2020, following the agreement with the eligible employees of the preference shares to pay performance bonuses for a total amount of $3.5 million, as a replacement of the preference shares obligation, the performance bonus obligation payable to the eligible employees was paid in two different installments of $1.4 million on August 31, 2020, and of $883,000 on November 30, 2020. On February 3, 2021, the previously outstanding performance bonus obligation payable to the eligible employees was agreed to be paid in two different installments of $826,000 on February 15, 2021 and $340,000 (at the March 31, 2021 exchange rate) on April 15, 2021, under the full and final settlement agreements signed with the eligible employees. See Note 21 – Subsequent Events – for further details. As of March 31, 2021, the outstanding performance bonus obligation payable to the eligible employees amounted to $340,000. This amount is included in the condensed consolidated balance sheets line item “Payroll and payroll related accrued liabilities”.

Other Current and Long-Term Lia

Other Current and Long-Term Liabilities	3 Months Ended
	Mar. 31, 2021
Other Liabilities Disclosure [Abstract]
Other Current and Long-Term Liabilities	12. OTHER CURRENT AND LONG-TERM LIABILITIES Other current liabilities consisted of the following (in thousands): As of March 31, As of December 31, 2021 2020 Liabilities for tax other than income tax $ 437 $ 2,942 Social security liabilities 295 383 Current tax liabilities 886 434 Accrued financial interest 265 1,066 Capital leases 125 138 Other miscellaneous 778 1,025 Total other current liabilities $ 2,786 $ 5,988 Other long-term liabilities consisted of the following (in thousands): As of March 31, As of December 31, 2021 2020 Interest rate swaps $ 92 $ 109 Warrant liability 1,589 — Capital leases 175 208 Other miscellaneous 302 286 Total other long-term liabilities $ 2,158 $ 603

Geographic Information

Geographic Information	3 Months Ended
	Mar. 31, 2021
Segment Reporting [Abstract]
Geographic Information	13. GEOGRAPHIC INFORMATION Revenue by geographic area is determined on the basis of the location of the customer. The Company generates its revenue primarily in Italy and India. The following table sets forth revenue by geographic area for the three months ended March 31, 2021 and 2020 (in thousands): Three Months Ended March 31, 2021 2020 Italy $ 16,087 $ 14,608 India 11,718 8,893 United States 5,121 4,289 Europe (excluding Italy) 1,418 2,573 Rest of the world 5,370 3,270 Total $ 39,714 $ 33,633 Three Months Ended March 31, 2021 2020 Italy 40.5 % 43.4 % India 29.5 % 26.4 % United States 12.9 % 12.8 % Europe (excluding Italy) 3.6 % 7.7 % Rest of the world 13.5 % 9.7 % As of March 31, 2021, the majority of the Company’s long-lived assets are located in Italy and India. The following table sets forth long-lived assets by geographic area as of March 31, 2021 and December 31, 2020 (in thousands): As of March 31, As of December 31, 2021 2020 Italy $ 3,288 $ 2,827 India 2,098 1,667 United States 1,719 2,225 Rest of the world 8 7 Total $ 7,113 $ 6,726 As of March 31, As of December 31, 2021 2020 Italy 46.2 % 42.0 % India 29.5 % 24.8 % United States 24.2 % 33.1 % Rest of the world 0.1 % 0.1 %

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2021
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	14. COMMITMENTS AND CONTINGENCIES Lease Commitments The Company entered into various operating lease agreements that expire over various years in the next 7 years. The Company’s Milan office lease contains an option to renew the lease for 6 years under terms and conditions set forth in the lease agreement. Certain of the Company’s leases contain provisions for rental adjustments. Operating lease rentals are expensed on a straight-line basis over the life of the lease beginning on the date the Company takes possession of the property. Rent expense was $192,000 and $235,000 for the three months ended March 31, 2021 and 2020, respectively. Future minimum lease payments under leasing obligations as of March 31, 2021 are as follows (in thousands): As of March 31, 2021 Operating leases Capital leases Total 2021 (remaining nine months) $ 491 $ 109 $ 600 2022 528 75 603 2023 434 62 496 2024 335 62 397 2025 308 18 326 2026 and thereafter 130 — 130 Total minimum lease payments $ 2,226 $ 326 $ 2,552 Future minimum lease payment under capital leases as of March 31, 2021, consisted of the following (in thousands): As of March 31, 2021 Capital leases Total payments $ 326 Less: interest portion 26 Net capital lease obligation 300 Less: current portion 125 Long term portion $ 175 Contingencies As of March 31, 2021, the Company had contingent liabilities of $128,000, relating to a tax appeal of Solutions Infini for which no provision was recognized as its occurrence was deemed remote.

Restricted Stock Units

Restricted Stock Units	3 Months Ended
	Mar. 31, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Restricted Stock Units	15. RESTRICTED STOCK UNITS (RSUs) The following table sets forth the activity related to the number of outstanding RSUs for the three months ended March 31, 2021: Number of shares Weighted- average grant date fair value (per share) Non-vested as of December 31, 2020 3,331,037 $ 7.48 Vested (558,396 ) 8.08 Granted 939,450 16.23 Cancelled (8,150 ) 7.01 Non-vested as of March 31, 2021 3,703,941 $ 9.61 RSUs compensation expense for the three months ended March 31, 2021 was $4.6 million, which was recorded as follows (in thousands): Three Months Ended March 31, 2021 2020 Research and development $ 971 $ 1,312 Sales and marketing 522 1,053 General and administrative 3,067 3,839 Total $ 4,560 $ 6,204 As of March 31, 2021, there was $23.4 million of unrecognized compensation cost related to non-vested RSUs to be recognized over a weighted-average remaining period of 1.56 years.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Income Taxes	16. INCOME TAXES The Company provides for income taxes using an asset and liability approach under which deferred income taxes are provided for based upon enacted tax laws and rates applicable to periods in which the taxes become payable. The Company recorded an income tax expense of $34,000 and an income tax benefit of $589,000 for the three months ended March 31, 2021 and 2020, respectively. The Company continues to maintain a full valuation allowance against its domestic deferred tax assets and most foreign jurisdictions other than India also maintain a full valuation against its deferred tax assets. As of March 31, 2021, the Company maintained $4.9 million of undistributed earnings and profits generated by a foreign subsidiary (Solutions Infini) for which no deferred tax liabilities have been recorded, since the Company intends to indefinitely reinvest such earnings in the subsidiary to fund the international operations and certain obligations of the subsidiary. Should the above undistributed earnings be distributed in the form of dividends or otherwise, the distributions would result in $737,000 of tax expense. The Company files income tax returns in the United States and in foreign jurisdictions including Italy, India, and Switzerland. As of March 31, 2021, the tax years 2008 through the current period remain open to examination in each of the major jurisdictions in which the Company is subject to tax .

Warrants

Warrants	3 Months Ended
	Mar. 31, 2021
Warrants And Rights Note Disclosure [Abstract]
Warrants	17. WARRANTS Warrants will only be exercisable for whole shares at $11.50 per share. Under the terms of the warrant agreement dated December 12, 2017 (the “Warrant Agreement”), the Company has agreed to use its best efforts to file a new registration statement following the completion of the Business Combination, for the registration of the shares of common stock issuable upon exercise of the warrants. That registration statement was filed by the Company on May 4, 2020 and declared effective by the SEC on May 8, 2020. No fractional shares will be issued upon exercise of the warrants. If, upon exercise of the warrants, a holder would be entitled to receive a fractional interest in a share, the Company will, upon exercise, round down to the nearest whole number for the number of shares of common stock to be issued to the warrant holder. Each warrant became exercisable 30 days after the completion of the Business Combination and will expire five years after the completion of the Business Combination or earlier upon redemption or liquidation. Once the warrants became exercisable, the Company may redeem the outstanding warrants in whole and not in part at a price of $0.01 per warrant upon a minimum of 30 days’ prior written notice of redemption, only in the event that the last sale price of the Company’s shares of common stock equals or exceeds $18.00 per share for any 20 trading days within the 30-trading day period ending on the third trading day before the Company sends the notice of redemption to the warrant holders. On April 12, 2021, the SEC issued a SEC Staff Statement on “Accounting and Reporting Considerations for Warrants Issued by Special Purpose Acquisition Companies (“SPACs”) (the “SEC Staff Statement”). The SEC Staff Statement addresses certain accounting and reporting considerations related to warrants of a kind similar to those issued by the Company at the time of its initial public offering in December 2019. Based on ASC 815-40, “Contracts in Entity’s Own Equity”, warrant instruments that do not meet the criteria to be considered indexed to an entity’s own stock shall be initially classified as liabilities at their estimated fair values. In periods subsequent to issuance, changes in the estimated fair value of the derivative instruments should be reported in the consolidated statements of operations. Following the SEC Staff Statement, management evaluated the fact pattern set forth within Kaleyra’s Warrant Agreement and concluded that the warrants issued in connection with private placements that occurred in December 2017 and January 2018 concurrently with its initial public offering (the “Private Placement Warrants”) should have been recorded as a liability at fair value as the Private Placement Warrants were not considered to be indexed to the entity’s own stock. Because the transfer of Private Placement Warrants to anyone other than the initial purchasers or their permitted transferees would result in the Private Placement Warrants having substantially the same terms as warrants issued in the Company’s initial public offering, management determined that the fair value of each Private Placement Warrant approximates the fair value of its publicly traded warrants. Management analyzed the impact of this error on the Company’s prior consolidated financial statements beginning from the date when the Private Placement Warrants were issued and concluded that the adjustments were immaterial to any period presented in previously issued consolidated financial statements. The out-of-period adjustment related to the prior periods was also immaterial to the three months ended March 31, 2021. As a result of this analysis, the Company corrected this error in the three months ended March 31, 2021. The correction resulted in an increase of $534,000 in other long-term liabilities, a decrease of $344,000 in additional paid-in capital and an increase of $190,000 in financial expense, net. During the three months ended March 31, 2021, the Company recorded $1.3 million, including the $190,000 attributable to prior periods, in financial expense, net on the condensed consolidated statements of operations for the change in fair value of the Private Placement Warrants. As of March 31, 2021, there were 7,125,232 warrants outstanding, following the exercise of 249,706 warrants during the three-month period ended thereof.

Net Loss Per Share

Net Loss Per Share	3 Months Ended
	Mar. 31, 2021
Earnings Per Share [Abstract]
Net Loss Per Share	18. NET LOSS PER SHARE The following table sets forth the calculation of basic and diluted net loss per share during the period presented (in thousands, except share and per share data): Three Months Ended March 31, 2021 2020 Net loss $ (10,358 ) $ (8,823 ) Weighted average shares used to compute net loss per common share, basic and diluted 30,364,943 19,979,589 Net loss per common share, basic and diluted $ (0.34 ) $ (0.44 ) The Company generated a net loss for each of the three months ended March 31, 2021 and 2020. Accordingly, the effect of dilutive securities is not considered in the loss per share for such periods because their effect would be anti-dilutive on the net loss per share. For the three months ended March 31, 2021, the weighted average number of outstanding shares of common stock equivalents, which were excluded from the calculation of the diluted net loss per share as their effect would be anti-dilutive, was 12,704,582 (14,346,056 for the three months ended March 31, 2020).

Transactions with Related Parti

Transactions with Related Parties	3 Months Ended
	Mar. 31, 2021
Related Party Transactions [Abstract]
Transactions with Related Parties	19. TRANSACTIONS WITH RELATED PARTIES During the three months ended March 31, 2021 and 2020, related party transactions, other than compensation and similar arrangements in the ordinary course of business, were as follows: i. Unsecured convertible promissory notes, received by Esse Effe and Maya at the closing of the Business Combination, pursuant to the terms of the Stock Purchase Agreement. Maya is affiliated with Dario Calogero and the shares are beneficially owned by a shareholder, Mr. Calogero who is the Chief Executive Officer and a director of Kaleyra. Esse Effe is affiliated with Dr. Emilio Hirsch, and its shares are beneficially owned by Dr. Hirsch, a shareholder and a director of the Company. The outstanding amount due by the Company was $3.75 million plus $65,000 of accrued interest as of March 31, 2021 ($7.5 million plus $241,000 of accrued interest as of December 31, 2020). See Note 9 – Notes Payable – for additional information; ii. Legal services rendered by a partner of Studio Legale Chiomenti, that is a family member of a key manager of the Company. Costs incurred by the Company for the above services were $80,000 and $56,000 in the three months ended March 31, 2021 and 2020; iii. Alessandra Levy, the spouse of Kaleyra’s Chief Executive Officer, Dario Calogero, is an employee within the marketing team of Kaleyra S.p.A.. Ms. Levy received salary and benefits in the amount of $60,000 and $57,000 for the three months ended March 31, 2021, and 2020, respectively; iv. Pietro Calogero, the son of Kaleyra’s Chief Executive Officer, Dario Calogero, is an employee within the research and development team of Kaleyra S.p.A.. Mr. Pietro Calogero received salary and benefits in the amount of $12,000 and $5,000 for the three months ended March 31, 2021, and 2020, respectively; and v. As mentioned in Note 11, in the three months ended March 31, 2020, as a result of a modification of the Solutions Infini 2018 Purchase Agreement, a significant portion of the liability for preference shares was replaced with bonus compensation of $3.5 million. During fiscal year 2020, the previously outstanding bonus compensation payable to executive managers was paid in two different installments of $1.4 million on August 31, 2020, and of $883,000 on November 30, 2020. During the three months ended March 31, 2021 the outstanding bonus compensation of $826,000 was paid on February 15, 2021. As of March 31, 2021, the outstanding performance bonus obligation payable to the executive managers amounted to $340,000. See Note 11 – Preference Shares Liabilities and Note 21 Subsequent Events – for further details. The following table presents the expenses for transactions with related parties reported in the condensed consolidated statements of operations (in thousands): Three Months Ended March 31, 2021 2020 Research and development $ 12 $ 5 Sales and marketing 60 57 General and administrative 80 56 Financial expense, net 44 122

Revenue

Revenue	3 Months Ended
	Mar. 31, 2021
Revenue From Contract With Customer [Abstract]
Revenue	20 . REVENUE Revenue Recognition The Company enters into contracts that can include various combinations of products and services, which are generally capable of being distinct and accounted for as separate performance obligations. Revenue is recognized net of allowances for credits and any taxes collected from customers. Taxes collected are subsequently remitted to governmental authorities. The Company determines revenue recognition through the following steps: • Identification of the contract, or contracts, with a customer; • Identification of the performance obligations in the contract; • Determination of the transaction price; • Allocation of the transaction price to the performance obligations in the contract; and • Recognition of revenue when, or as, the Company satisfies a performance obligation. Nature of Products and Services The Company's revenue is primarily derived from usage-based fees earned from the sale of communications services offered through software solutions to large enterprises, as well as small and medium-sized customers. The Company’s revenue is recognized upon the sending of a SMS message or by the authentication of a financial transaction of an end user of the Company’s customer using the Company’s platform in an amount that reflects the consideration the Company expects to receive in exchange for those services which is generally based upon agreed fixed prices per unit. Platform access is considered a monthly series comprised of one performance obligation and usage-based fees are recognized as revenue in the period in which the usage occurs. After usage occurs, there are no remaining obligations that would preclude revenue recognition. Revenue from usage-based fees represented 98% of total revenue in both the three-month period ended March 31, 2021 and 2020. Subscription-based fees are derived from certain term-based contracts, such as with the sales of short codes and customer support, which is generally one year. Term-based contract revenue is recognized on a ratable basis over the contractual term of the arrangement beginning on the date that the service is made available to the customer. Revenue from term-based fees represented 2% of total revenue in both the three-month period ended March 31, 2021 and 2020. The Company's arrangements do not contain general rights of return. The contracts do not provide customers with the right to take possession of the software supporting the applications. Amounts that have been invoiced are recorded in trade receivables and in revenue or deferred revenue depending on whether the revenue recognition criteria have been met. Contract Balances The Company receives payments from customers based on a billing schedule as established in its contracts. Contract assets are recorded when the Company has a conditional right to consideration for its completed performance under the contracts. Trade receivables are recorded when the right to this consideration becomes unconditional, which is as usage occurs. The Company did not have any contract assets as of March 31, 2021 and December 31, 2020. Deferred revenue is recorded when cash payments are received in advance of future usage on non-cancellable contracts. As of March 31, 2021 and December 31, 2020, the Company recorded $3.1 million and $3.7 million, respectively, as deferred revenue in its condensed consolidated balance sheets. In the three months ended March 31, 2021, the Company recognized $1.6 million of revenue that was included in deferred revenue as of December 31, 2020. Disaggregated Revenue In general, revenue disaggregated by geography is aligned according to the nature and economic characteristics of the Company’s business and provides meaningful disaggregation of the Company’s results of operations. Refer to Note 13 – Geographic Information for details of revenue by geographic area.

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2021
Subsequent Events [Abstract]
Subsequent Events	21. SUBSEQUENT EVENTS On April 15, 2021, the previously outstanding performance bonus obligation of $340,000 (at March 31, 2021 exchange rate) payable to the eligible employees under the Solutions Infini 2018 Purchase Agreement was paid in full, as such the obligation terminated pursuant to its terms and no more obligation remains outstanding. On April 15, 2021, Kaleyra S.p.A. and Banco Popolare di Milano S.p.A. entered into an agreement to postpone repayment of the principal amounts due under the existing Line 3 of the long-term unsecured financing agreement for a period of six (6) months starting from March 31, 2021 until September 30, 2021, without prejudice to Kaleyra S.p.A.’s obligations to continue to pay interest in relation to the principal amount at the original due dates. On April 15, 2021, Kaleyra entered into a general unsecured loan agreement with Simest S.p.A for a total of $3.6 million (€3.0 million at the April 15, 2021 exchange rate) relating to the Fund 394/81 (the “Simest Financing”) and Fund for Integrated Promotion (the “Co-financing”) for implementation of a program to break into foreign markets. The principal amount of $505,000 (€422,000 at the April 15, 2021 exchange rate) of the financing applies to the Co-financing and has been granted in accordance with Section 3.1 of the Temporary Framework for State aid measures to support the economy in the current COVID-19 outbreak of the European Commission, and as such does not require repayment if used for the purposes stated within Fund 394/81. The principal amount of $3.1 million (€2.6 million at the April 15, 2021 exchange rate) applies to the Simest Financing. The Simest Financing bears a subsidized interest rate of 0.055% and a reference interest rate of 0.55%. The loan will have a duration of six (6) years starting from the date of disbursement and will have to be repaid in half-yearly installments starting after a two-year pre-amortization period.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2021
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying condensed consolidated financial statements of the Company are unaudited, and have been prepared in accordance with accounting principles generally accepted in the United States of America (“US GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, this interim quarterly financial report does not include all disclosures required by US GAAP. In the opinion of our management, the unaudited condensed consolidated financial statements reflect all adjustments, consisting only of normal recurring adjustments, considered necessary to present fairly the financial position, results of operations and cash flows of Kaleyra and our consolidated subsidiaries for all periods presented. The results of operations for the three months ended March 31, 2021 are not necessarily indicative of the results to be expected in the future or for the full fiscal year. It is recommended that these condensed consolidated financial statements be read in conjunction with our consolidated financial statements and the notes thereto included in our 2020 Annual Report on Form 10-K filed with the Securities and Exchange Commission (the “SEC”) on March 16, 2021. These condensed consolidated financial statements have been prepared in conformity with US GAAP applicable for an “emerging growth company” as defined in the Jumpstart Our Business Startups Act (“JOBS Act”). The JOBS Act provides that an emerging growth company can take advantage of an extended transition period for complying with new or revised accounting standards. In particular, an emerging growth company can delay the adoption of certain accounting standards until those standards would apply to private companies. For the purpose of these condensed consolidated financial statements, the Company availed itself of an extended transition period for complying with new or revised accounting standards and, as a result, did not adopt new or revised accounting standards on the relevant dates on which adoption of such standards is required for public companies.
Liquidity	Liquidity In connection with Accounting Standards Update (“ASU”) 2014-15, Presentation of Financial Statements-Going Concern (Subtopic 205-40), Disclosures of Uncertainties about an Entity’s Ability to Continue as a Going Concern, the Company evaluated its ability to continue as a going concern. The Company has negative cash flows from operating activities as of March 31, 2021. The condensed consolidated balance sheet as of March 31, 2021 includes total current assets of $87.9 million and total current liabilities of $71.7 million, resulting in net current assets of $16.2 million. The Business Combination generated significant obligations including (i) $13.1 million of liabilities related to non-recurring Business Combination transaction related costs; (ii) $15.0 million of deferred consideration to the Sellers in the Business Combination transaction; (iii) $13.2 million of net obligations under certain Shares Purchase Forward Agreements entered into by GigCapital, Inc. prior to the Business Combination; and (iv) $3.6 million of notes payable acquired as a result of the Business Combination. As of March 31, 2021, the Company still had the following remaining obligations as a result of the Business Combination: (i) $405,000 of liabilities related to non-recurring Business Combination transaction related costs; (ii) $3.75 million of deferred consideration to the Sellers in the Business Combination transaction. Subsequent to March 31, 2021, the Company entered into a new loan agreement with Simest S.p.A., and entered into an agreement to postpone repayment of the principal amounts due under the existing Line 3 of the long-term unsecured financing agreement with Banco Popolare di Milano S.p.A. for a period of six (6) months. See Note 21 – Subsequent Events – for further details. Considering the effects of the new financing and the renegotiation described above, and the typical financial cycle of the Company, management believes that the Company’s cash, cash flows from operations, debt and equity financings and availability of borrowings, will be sufficient to support its planned operations for at least the next 12 months from the date these condensed consolidated financial statements were issued.
Business seasonality	Business seasonality Historically, Kaleyra has experienced clear seasonality in its revenue generation, with slower traction in the first calendar quarter, and increasing revenues as the year progresses toward the higher revenues in messaging and notification services during the fourth calendar quarter. This patterned revenue generation behavior takes place due to Kaleyra’s customers sending more messages to their end-user customers who are engaged in consumer transactions at the end of the calendar year, resulting in an increase in notifications of electronic payments, credit card transactions and e-commerce.
Principles of Consolidation	Principles of Consolidation The condensed consolidated financial statements include the Company and its wholly owned subsidiaries, including Kaleyra S.p.A., Solutions Infini, Buc Mobile and The Campaign Registry, which represent its major operations. All significant intercompany balances and transactions have been eliminated in consolidation.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. These estimates are used for, but not limited to, allowance for doubtful accounts; valuation of the Company’s stock-based awards; recoverability of long-lived and intangible assets; capitalization and useful life of the Company’s capitalized internal-use software development costs; fair value of acquired intangible assets and goodwill; accruals and contingencies, including tax related provisions and the valuation allowance on deferred taxes. Estimates are based on historical experience and on various assumptions that the Company believes are reasonable under current circumstances. However, future events are subject to change and best estimates and judgments may require further adjustments; therefore, actual results could differ materially from those estimates. Management periodically evaluates such estimates and they are adjusted prospectively based upon such periodic evaluation. Actual results and outcomes may differ from management’s estimates and assumptions due to risks and uncertainties, including uncertainty in the current economic environment due to the recent outbreak of a novel strain of the coronavirus (“COVID-19”).
Concentration of Credit Risk	Concentration of Credit Risk Financial instruments that potentially expose the Company to a concentration of credit risk consist primarily of cash, restricted cash and cash equivalents, short-term investments and trade receivables. The Company maintains cash and cash equivalents and short-term investments with financial institutions that management believes are financially sound. The Company sells its services to a wide variety of customers. If the financial condition or results of operations of any significant customers deteriorate substantially, operating results could be adversely affected. To reduce credit risk, management performs ongoing credit evaluations of the financial condition of significant customers. The Company maintains reserves for estimated credit losses on customer accounts when considered necessary. Actual credit losses may differ from the Company’s estimates. In the three months ended March 31, 2021 and 2020, there were no customers that individually accounted for more than 10% of the Company’s consolidated total revenue. As of March 31, 2021 and December 31, 2020, no customers and one individual customer, respectively, accounted for more than 10% of the Company’s consolidated total trade receivables. As of December 31, 2020, trade receivables accounted for by that one customer amounted to $4.5 million.
Warrant Liability	Warrant Liability The Company accounts for warrants for shares of the Company’s common stock that are not indexed to its own stock as liabilities at fair value on the condensed consolidated balance sheets. The warrants are subject to remeasurement at each balance sheet date and any change in fair value is recognized in “Financial expense, net” on the condensed consolidated statements of operations. The liability is included in the condensed consolidated balance sheet line item “Other long-term liabilities”. The Company will continue to adjust the liability for changes in fair value until the earlier of the exercise or expiration of the common stock warrants. At that time, the portion of the warrant liability related to the common stock warrants will be reclassified to additional paid-in capital.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In May 2021, the Financial Accounting Standards Board (“FASB”) issued ASU 2021-04 “Earnings Per Share (Topic 260), Debt—Modifications and Extinguishments (Subtopic 470-50), Compensation— Stock Compensation (Topic 718), and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815- 40) Issuer’s Accounting for Certain Modifications or Exchanges of Freestanding Equity-Classified Written Call Options” which clarifies and reduces diversity in an issuer’s accounting for modifications or exchanges of freestanding equity-classified written call options (for example, warrants) that remain equity classified after modification or exchange. An entity should measure the effect of a modification or an exchange of a freestanding equity-classified written call option that remains equity classified after modification or exchange as follows: i) for a modification or an exchange that is a part of or directly related to a modification or an exchange of an existing debt instrument or line-of-credit or revolving-debt arrangements (hereinafter, referred to as a “debt” or “debt instrument”), as the difference between the fair value of the modified or exchanged written call option and the fair value of that written call option immediately before it is modified or exchanged; ii) for all other modifications or exchanges, as the excess, if any, of the fair value of the modified or exchanged written call option over the fair value of that written call option immediately before it is modified or exchanged. The amendments in this Update are effective for all entities for fiscal years beginning after December 15, 2021, including interim periods within those fiscal years. An entity should apply the amendments prospectively to modifications or exchanges occurring on or after the effective date of the amendments. The Company is currently evaluating the impact of this standard on its condensed consolidated financial statements. In January 2021, the FASB issued ASU 2021-01 “Reference Rate Reform (Topic 848)”, which clarifies that certain optional expedients and exceptions in Topic 848 for contract modifications and hedge accounting apply to derivatives that are affected by the discounting transition. Specifically, certain provisions in Topic 848, if elected by an entity, apply to derivative instruments that use an interest rate for margining, discounting, or contract price alignment that is modified as a result of reference rate reform. Amendments in this Update to the expedients and exceptions in Topic 848 capture the incremental consequences of the scope clarification and tailor the existing guidance to derivative instruments affected by the discounting transition. The amendments in this Update apply to all entities that elect to apply the optional guidance in Topic 848. The amendments do not apply to contract modifications made after December 31, 2022 or new hedging relationships entered into after December 31, 2022. For existing hedging relationships evaluated for effectiveness in periods after December 31, 2022, an exception is made for those hedging relationships that apply certain optional expedients in which the accounting effects are recorded through the end of the hedging relationship (including periods after December 31, 2022). The Company is currently evaluating the impact of the optional expedients and exceptions of this standard on its condensed consolidated financial statements. In June 2020, the FASB issued ASU 2020-05 “Revenue from contracts with customers (Topic 606) and Leases (Topic 842): Effective dates for certain entities” (“ASU 2020-05”), which provides a limited one year deferral of the effective dates of the following updates (including amendments issued after the issuance of the original update) to provide immediate, near-term relief for certain entities for whom these updates are either currently effective or imminently effective: i) ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) (“Revenue”); ii) ASU No. 2016-02, Leases (Topic 842) (“Leases”). In November 2019, the FASB issued ASU 2019-10 “Financial Instruments - Credit Losses (Topic 326), Derivatives and Hedging (Topic 815), and Leases (Topic 842): Effective Dates” (“ASU 2019-10”). The amendments in this ASU amended certain effective dates for the above ASU 2016-02, Leases (including amendments issued after the issuance of the original ASU). The effective dates for Leases after applying ASU 2019-10 were as follows: public business entities, excluding emerging growth companies and smaller reporting companies, for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. All other entities for fiscal years beginning after December 15, 2020, and interim periods within fiscal years beginning after December 15, 2021. Early application continues to be allowed. In ASU 2019-10, the FASB noted that challenges associated with transition to a major update are often magnified for private companies and smaller public companies. Those challenges have been significantly amplified by the current business and capital market disruptions caused by the COVID-19 pandemic. For this reason, the FASB issued the amendments in ASU 2020-05 by deferring the effective date for one additional year for entities in the “all other” category that have not yet issued their financial statements (or made financial statements available for issuance) reflecting the adoption of Leases. Therefore, under the amendments, Leases (Topic 842) is effective for entities within the “all other” category for fiscal years beginning after December 15, 2021, and interim periods within fiscal years beginning after December 15, 2022. Early application continues to be permitted, which means that an entity may choose to implement Leases before those deferred effective dates. While the Company expects the adoption of the Leases standard (Leases Topic 842) to result in a material increase to the reported assets and liabilities, the Company has not yet determined the full impact that the adoption of this standard will have on its condensed consolidated financial statements. In February 2020, the FASB issued ASU 2020-02 “Financial Instruments—Credit Losses (Topic 326) and Leases (Topic 842), Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 119 and Update to SEC Section on Effective Date Related to Accounting Standards Update No. 2016-02, Leases (Topic 842). This ASU applies to all registrants that are creditors in loan transactions that, individually or in the aggregate, have a material effect on the registrant’s financial condition. This ASU guidance is applicable upon a registrant’s adoption of Accounting Standards Codification (“ASC”) Topic 326. On November 15, 2019, the FASB delayed the effective date of ASC Topic 326 for certain small public companies and other private companies. As amended, the effective date of ASC Topic 326 was delayed until fiscal years beginning after December 15, 2022 for U.S. Securities and Exchange Commission (“SEC”) filers that are eligible to be smaller reporting companies under the SEC’s definition, as well as private companies and not-for-profit entities. The Company is currently evaluating the impact of this standard on its condensed consolidated financial statements. In November 2019, the FASB issued ASU 2019-10 “Financial Instruments—Credit Losses (Topic 326), Derivatives and Hedging (Topic 815), and Leases (Topic 842): Effective Dates”. The amendments in ASU 2019-10 amend certain effective dates for the following major ASUs (including amendments issued after the issuance of the original ASU): a) b) A In August 2018, the FASB issued ASU 2018-15, “Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That is a Service Contract”. This standard aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. The standard is effective for public business entities for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. For all other entities, the amendments in this ASU are effective for annual reporting periods beginning after December 15, 2020, and interim periods within annual periods beginning after December 15, 2021. Early adoption is permitted, including adoption in any interim period, for all entities. The amendments in this ASU should be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. The Company adopted the amendments, and the adoption did not have a material impact on its condensed consolidated financial statements. In August 2018, the FASB issued ASU 2018-14, “Compensation—Retirement Benefits—Defined Benefit Plans—General (Subtopic 715-20)”, which modifies the disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. The amendments are effective for fiscal years ending after December 15, 2020 for public business entities and for fiscal years ending after December 15, 2021 for all other entities. Early adoption is permitted for all entities. The Company adopted the amendments, and the adoption did not have a material impact on its condensed consolidated financial statements. In January 2017, the FASB issued ASU 2017-04, “Simplifying the Test for Goodwill Impairment”, which removes the second step of the goodwill impairment test that requires a hypothetical purchase price allocation. A goodwill impairment will now be the amount by which a reporting unit's carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. This guidance is effective prospectively for public business entities for annual or interim goodwill impairment tests in fiscal years beginning after December 15, 2020 and for annual or interim goodwill impairment tests in fiscal years beginning after December 15, 2021 for other entities. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The Company is currently evaluating the impact of this standard on its condensed consolidated financial statements. In June 2016, the FASB issued ASU 2016-13, “Financial Instruments—Credit Losses: Measurement of Credit Losses on Financial Instruments”, which changes the impairment model for most financial assets. The new model uses a forward-looking expected loss method, which will generally result in earlier recognition of allowances for losses. In November 2018, the FASB issued ASU 2018-19, “Codification Improvements to Topic 326, Financial Instruments— Credit Losses”, which clarifies that receivables arising from operating leases are not within the scope of Topic 326, Financial Instruments—Credit Losses. Instead, impairment of receivables arising from operating leases should be accounted for in accordance with Topic 842, Leases. These ASUs are effective for public entities for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years, and for other entities for fiscal years beginning after December 15, 2020 and interim periods within fiscal years beginning after December 15, 2021. Earlier application is permitted. As noted above, the effective date of this ASU has now been delayed for two years by the issuance of ASU 2019-10. The Company is currently evaluating the impact of this standard on its condensed consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, “Leases”, which was further clarified by ASU 2018-10, “Codification Improvements to Topic 842, Leases”, and ASU 2018-11, “Leases—Targeted Improvements”, both issued in July 2018. ASU 2016-02 affects all entities that lease assets and will require lessees to recognize a lease liability and a right-of-use asset for all leases (except for short-term leases that have a duration of less than one year) as of the date on which the lessor makes the underlying asset available to the lessee. For lessors, accounting for leases is substantially the same as in prior periods. ASU 2018-10 clarifies or corrects unintended application of guidance related to ASU 2016-02. The amendment affects narrow aspects of ASU 2016-02 related to the implicit rate in the lease, impairment of the net investment in the lease, lessee reassessment of lease classification, lessor reassessment of lease term and purchase options, variable payments that depend on an index or rate and certain transition adjustments. ASU 2018-11 adds a transition option for all entities and a practical expedient only for lessors. The transition option allows entities to not apply the new lease standard in the comparative periods they present in their financial statements in the year of adoption. Under the transition option, entities can opt to continue to apply the legacy guidance in ASC 840, “Leases”, including its disclosure requirements, in the comparative prior periods presented in the year they adopt the new lease standard. Entities that elect this transition option will still be required to adopt the new leases standard using the modified retrospective transition method required by the standard, but they will recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption rather than in the earliest period presented. The new standards are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years for a public business entity. For all other entities, the amendments in this ASU are effective for fiscal years beginning after December 15, 2019, and interim periods within fiscal years beginning after December 15, 2020. Earlier application is permitted. As noted above, the effective date of this ASU has now been delayed for two years by the issuance of ASU 2020-05. While the Company expects the adoption of these standards to result in a material increase to the reported assets and liabilities, the Company has not yet determined the full impact that the adoption of this standard will have on its condensed consolidated financial statements.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2021
Fair Value Disclosures [Abstract]
Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis	The following tables provide the assets and liabilities measured at fair value on a recurring basis as of March 31, 2021 and December 31, 2020 (in thousands): Fair Value Hierarchy as of March 31, 2021 Aggregate Level 1 Level 2 Level 3 Fair Value Assets: Mutual funds (1) $ 593 $ — $ — $ 593 Certificates of deposit (2) — 3,694 — 3,694 Total Assets $ 593 $ 3,694 $ — $ 4,287 Liabilities: Interest Rate Swap (3) $ — $ 92 $ — $ 92 Warrant liability (4) — 1,589 — 1,589 Total Liabilities $ — $ 1,681 $ — $ 1,681 (1) Included in the condensed consolidated balance sheet line item “Short-term investments”. (2) Included in the condensed consolidated balance sheet line item “Short-term investments”, with maturity terms between 4 and 12 months held in India. (3) Included in the condensed consolidated balance sheet line item “Other long-term liabilities”. (4) Included in the condensed consolidated balance sheet line item “Other long-term liabilities”. See Note 17 – Warrants – for further details. Fair Value Hierarchy as of December 31, 2020 Aggregate Level 1 Level 2 Level 3 Fair Value Assets: Mutual funds (1) $ 590 $ — $ — $ 590 Certificates of deposit (2) — 4,253 — 4,253 Total Assets $ 590 $ 4,253 $ — $ 4,843 Liabilities Interest Rate Swap (3) $ — $ 109 $ — $ 109 Debt for forward share purchase agreements (4) — 483 — 483 Total Liabilities $ — $ 592 $ — $ 592 (1) Included in the condensed consolidated balance sheet line item “Short-term investments”. (2) Included in the condensed consolidated balance sheet line item “Short-term investments”, with maturity terms between 4 and 12 months held in India. (3) Included in the condensed consolidated balance sheet line item “Other long-term liabilities”. (4) Based on the information available at the reporting date, debt for forward share purchase agreements have been determined as the present value to be paid at settlement in case the counterparty exercises the put option.
Summary of Values of Short-term Investments	The values of short-term investments as of March 31, 2021 and as of December 31, 2020 were as follows (in thousands): As of March 31, As of December 31, 2021 2020 Cost Unrealized gains Unrealized losses Fair value Cost Unrealized gains Unrealized losses Fair value Mutual funds $ 587 $ 6 $ — $ 593 $ 580 $ 10 $ — $ 590 Certificates of deposit 3,694 — — 3,694 4,253 — — 4,253
Summary of Net Realized and Unrealized (Gains) and Losses Related to Level 3 Liabilities	Net realized and unrealized (gains) and losses related to the Company’s preference shares, which were classified as Level 3 liabilities during the quarter ended March 31, 2020, are reported in the condensed consolidated statements of operations as follows (in thousands): Research and development Sales and marketing General and administrative Financial income (expense), net Foreign currency Income (loss) Total Three months ended March 31, 2020 Liabilities: Preference shares $ (941 ) $ (372 ) $ (756 ) $ (417 ) $ — $ (2,486 )

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2021
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Schedule of Gain (Losses) in the Condensed Consolidated Statement of Operations Related to Derivative Contracts	The amount and location of the gains (losses) in the condensed consolidated statements of operations related to derivative contracts is as follows (in thousands): Three Months Ended March 31, Derivatives Not Designed As Hedging Instruments Line Items 2021 2020 Interest Rate Swap Financial expense, net $ 13 $ 7 Total $ 13 $ 7
Schedule of Fair Value Derivative Contracts Reported in Condensed Consolidated Balance Sheet	The following table presents the fair value and the location of derivative contracts reported in the condensed consolidated balance sheets (in thousands): As of March 31, As of December 31, Derivatives Not Designed As Hedging Instruments Line Items 2021 2020 Interest Rate Swap Other long-term liabilities $ 92 $ 109 Total $ 92 $ 109

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets, Net (Tables)	3 Months Ended
	Mar. 31, 2021
Goodwill And Intangible Assets Disclosure [Abstract]
Summary of Goodwill	Goodwill as of March 31, 2021 and December 31, 2020 was as follows (in thousands): Balance as of December 31, 2020 $ 16,657 Effect of exchange rate (45 ) Balance as of March 31, 2021 $ 16,612
Summary of Intangible Assets	Intangible assets consisted of the following (in thousands): As of March 31, 2021 As of December 31, 2020 Gross Accumulated amortization Net Gross Accumulated amortization Net Amortizable Intangible Assets: Developed technology $ 2,737 $ 1,731 $ 1,006 $ 2,742 $ 1,576 $ 1,166 Customer relationships 8,903 2,829 6,074 8,925 2,598 6,327 Patent 127 51 76 130 49 81 Total amortizable intangible assets $ 11,767 $ 4,611 $ 7,156 $ 11,797 $ 4,223 $ 7,574
Summary of Estimated Future Amortization Expense	Total estimated future amortization expense as of is as follows (in thousands): As of March 31, 2021 2021 (remaining nine months) $ 1,004 2022 1,160 2023 1,056 2024 853 2025 639 2026 and thereafter 2,444 Total $ 7,156

Other Assets (Tables)

Other Assets (Tables)	3 Months Ended
	Mar. 31, 2021
Other Assets [Abstract]
Schedule of Other Current Assets	Other current assets consisted of the following (in thousands): As of March 31, As of December 31, 2021 2020 VAT receivables $ 236 $ 1,347 Receivables from suppliers 1,249 542 Credit for tax other than income tax 589 119 Income tax receivables 94 69 Other receivables 3,054 57 Total other current assets $ 5,222 $ 2,134
Schedule of Other Long-Term Assets	Other long-term assets consisted of the following (in thousands): As of March 31, As of December 31, 2021 2020 Non-current income tax credit (advances and tax reduced at sources) $ 54 $ 1,509 Miscellaneous 245 288 Total other long-term assets $ 299 $ 1,797

Bank and Other Borrowings (Tabl

Bank and Other Borrowings (Tables)	3 Months Ended
	Mar. 31, 2021
Bank And Other Borrowings [Abstract]
Summary of Long-term Bank and Other Borrowings	Long-term bank and other borrowings consist of the following (in thousands): Interest Nominal Rate As of March 31, As of December 31, Interest As of March 31, As of December 31, 2021 2020 Maturity Contractual Rate 2021 2020 UniCredit S.p.A. (Line A Tranche (1) $ 2,750 $ 3,235 July 2023 Euribor 3 months + 3.10% 2.80 % 2.80 % UniCredit S.p.A. (Line A Tranche (2) 132 153 November 2023 Euribor 3 months + 3.10% 2.80 % 2.80 % UniCredit S.p.A. (Line B) 2,656 3,030 May 2024 Euribor 3 months + 2.90% 2.60 % 2.60 % UniCredit S.p.A. (Line C) 2,153 2,521 August 2023 Euribor 3 months + 3.90% 3.36 % 3.36 % Intesa Sanpaolo S.p.A. (Line 1) 744 931 April 2022 Euribor 3 months + 1.80% 1.26 % 1.26 % Intesa Sanpaolo S.p.A. (Line 2) 3,824 4,292 April 2024 Euribor 3 months + 2.60% 2.06 % 2.06 % Intesa Sanpaolo S.p.A. (Line 3) 9,265 9,688 June 2026 Euribor 3 months + 1.65% 1.11 % 1.11 % Intesa Sanpaolo S.p.A. (Line 4) 6,439 6,734 July 2026 Euribor 3 months + 1.70% 1.16 % 1.16 % UBI Banca S.p.A. (Line 1) 125 209 August 2021 Euribor 3 months + 1.25% 1.25 % 1.25 % UBI Banca S.p.A. (Line 2) 692 1,031 October 2021 Euribor 3 months +1.95% 1.41 % 1.41 % Monte dei Paschi di Siena S.p.A. (Line 1) 256 328 April 2022 0.95 % 0.95 % 0.95 % Monte dei Paschi di Siena S.p.A. (Line 2) 1,949 2,037 June 2023 1.50 % 1.50 % 1.50 % Banco BPM S.p.A. (Line 1) 912 1,056 June 2023 Euribor 3 months + 2.00% 2.00 % 2.00 % Banco BPM S.p.A. (Line 3) 6,086 6,355 September 2024 Euribor 3 months + 3.00% 2.46 % 2.46 % Simest 1 293 307 December 2023 0.50 % 0.50 % 0.50 % Simest 2 291 305 December 2023 0.50 % 0.50 % 0.50 % Simest 3 535 560 December 2023 0.50 % 0.50 % 0.50 % Total bank and other borrowings 39,102 42,772 Less: current portion 8,082 10,798 Total long-term portion $ 31,020 $ 31,974
Summary of Payments Obliged	As of March 31, 2021, the Company is obliged to make payments as follows (in thousands): As of March 31, 2021 2021 (remaining nine months) $ 5,807 2022 10,819 2023 10,537 2024 6,160 2025 3,626 2026 and thereafter 2,153 Total $ 39,102

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	3 Months Ended
	Mar. 31, 2021
Equity [Abstract]
Schedule of Accumulated Balances Related to Each Component of Accumulated Other Comprehensive Loss	The accumulated balances related to each component of accumulated other comprehensive loss are as follows (in thousands): Cumulative Foreign Currency Translation Adjustment Cumulative net unrealized gain (loss) on marketable securities, net of tax Accumulated Other Comprehensive Income (Loss) As of December 31, 2020 $ (2,836 ) $ 10 $ (2,826 ) Other comprehensive income (loss), net of tax 1,105 (4 ) 1,101 As of March 31, 2021 $ (1,731 ) $ 6 $ (1,725 )

Other Current and Long-Term L_2

Other Current and Long-Term Liabilities (Tables)	3 Months Ended
	Mar. 31, 2021
Other Liabilities Disclosure [Abstract]
Schedule of Other Current Liabilities	Other current liabilities consisted of the following (in thousands): As of March 31, As of December 31, 2021 2020 Liabilities for tax other than income tax $ 437 $ 2,942 Social security liabilities 295 383 Current tax liabilities 886 434 Accrued financial interest 265 1,066 Capital leases 125 138 Other miscellaneous 778 1,025 Total other current liabilities $ 2,786 $ 5,988
Schedule of Other Long-term Liabilities	Other long-term liabilities consisted of the following (in thousands): As of March 31, As of December 31, 2021 2020 Interest rate swaps $ 92 $ 109 Warrant liability 1,589 — Capital leases 175 208 Other miscellaneous 302 286 Total other long-term liabilities $ 2,158 $ 603

Geographic Information (Tables)

Geographic Information (Tables)	3 Months Ended
	Mar. 31, 2021
Segment Reporting [Abstract]
Summary of Revenue by Geographic Area	The following table sets forth revenue by geographic area for the three months ended March 31, 2021 and 2020 (in thousands): Three Months Ended March 31, 2021 2020 Italy $ 16,087 $ 14,608 India 11,718 8,893 United States 5,121 4,289 Europe (excluding Italy) 1,418 2,573 Rest of the world 5,370 3,270 Total $ 39,714 $ 33,633 Three Months Ended March 31, 2021 2020 Italy 40.5 % 43.4 % India 29.5 % 26.4 % United States 12.9 % 12.8 % Europe (excluding Italy) 3.6 % 7.7 % Rest of the world 13.5 % 9.7 %
Summary of Long-lived Assets by Geographic Area	The following table sets forth long-lived assets by geographic area as of March 31, 2021 and December 31, 2020 (in thousands): As of March 31, As of December 31, 2021 2020 Italy $ 3,288 $ 2,827 India 2,098 1,667 United States 1,719 2,225 Rest of the world 8 7 Total $ 7,113 $ 6,726 As of March 31, As of December 31, 2021 2020 Italy 46.2 % 42.0 % India 29.5 % 24.8 % United States 24.2 % 33.1 % Rest of the world 0.1 % 0.1 %

Commitments and Contingencies (

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2021
Commitments And Contingencies Disclosure [Abstract]
Schedule of Future Minimum Lease Payments under Leasing Obligations	Future minimum lease payments under leasing obligations as of March 31, 2021 are as follows (in thousands): As of March 31, 2021 Operating leases Capital leases Total 2021 (remaining nine months) $ 491 $ 109 $ 600 2022 528 75 603 2023 434 62 496 2024 335 62 397 2025 308 18 326 2026 and thereafter 130 — 130 Total minimum lease payments $ 2,226 $ 326 $ 2,552
Schedule of Future Minimum Lease Payments under Capital Leases	Future minimum lease payment under capital leases as of March 31, 2021, consisted of the following (in thousands): As of March 31, 2021 Capital leases Total payments $ 326 Less: interest portion 26 Net capital lease obligation 300 Less: current portion 125 Long term portion $ 175

Restricted Stock Units (Tables)

Restricted Stock Units (Tables) - Restricted Stock Units (RSUs)	3 Months Ended
	Mar. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Summary of Outstanding RSUs	The following table sets forth the activity related to the number of outstanding RSUs for the three months ended March 31, 2021: Number of shares Weighted- average grant date fair value (per share) Non-vested as of December 31, 2020 3,331,037 $ 7.48 Vested (558,396 ) 8.08 Granted 939,450 16.23 Cancelled (8,150 ) 7.01 Non-vested as of March 31, 2021 3,703,941 $ 9.61
Summary of RSUs Compensation Expense	RSUs compensation expense for the three months ended March 31, 2021 was $4.6 million, which was recorded as follows (in thousands): Three Months Ended March 31, 2021 2020 Research and development $ 971 $ 1,312 Sales and marketing 522 1,053 General and administrative 3,067 3,839 Total $ 4,560 $ 6,204

Net Loss Per Share (Tables)

Net Loss Per Share (Tables)	3 Months Ended
	Mar. 31, 2021
Earnings Per Share [Abstract]
Schedule of Calculation of Basic and Diluted Net Loss Per Share	The following table sets forth the calculation of basic and diluted net loss per share during the period presented (in thousands, except share and per share data): Three Months Ended March 31, 2021 2020 Net loss $ (10,358 ) $ (8,823 ) Weighted average shares used to compute net loss per common share, basic and diluted 30,364,943 19,979,589 Net loss per common share, basic and diluted $ (0.34 ) $ (0.44 )

Transactions with Related Par_2

Transactions with Related Parties (Tables)	3 Months Ended
	Mar. 31, 2021
Related Party Transactions [Abstract]
Schedule of Expenses for Related Parties	The following table presents the expenses for transactions with related parties reported in the condensed consolidated statements of operations (in thousands): Three Months Ended March 31, 2021 2020 Research and development $ 12 $ 5 Sales and marketing 60 57 General and administrative 80 56 Financial expense, net 44 122

Description of Organization a_2

Description of Organization and Business Operations - Additional Information (Details) $ / shares in Units, $ in Millions	Feb. 18, 2021USD ($)$ / sharesshares
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Acquisition date	Feb. 18, 2021
PIPE Subscription Agreements
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Closing of business combination share consideration | shares	8,400,000
Business combination, share price per share | $ / shares	$ 12.50
Business combination, purchase price	$ 200
mGage
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Total purchase price consideration	215
Prepayment amount transferred	$ 195
Closing of business combination share consideration | shares	1,600,000

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Additional Information (Details)	Nov. 25, 2019USD ($)	Mar. 31, 2021USD ($)Customer	Mar. 31, 2020USD ($)Customer	Dec. 31, 2020USD ($)Customer
Schedule Of Significant Accounting Policies [Line Items]
Total current assets		$ 87,860,000		$ 85,045,000
Total current liabilities		71,673,000		$ 88,768,000
Net assets current		16,200,000
Business combination transaction related costs	$ 13,100,000	405,000
Business combination, deferred consideration	15,000,000	3,750,000
Obligations net under shares purchase forward agreements entered by former entity	13,200,000
Business combination, notes payable acquired	$ 3,600,000
Revenue		$ 39,714,000	$ 33,633,000
Customer Concentration Risk | Revenue
Schedule Of Significant Accounting Policies [Line Items]
Concentration risk percentage		10.00%	10.00%
Number of customers | Customer		0	0
Customer Concentration Risk | Trade Receivables
Schedule Of Significant Accounting Policies [Line Items]
Concentration risk percentage		10.00%		10.00%
Number of customers | Customer		0		1
Customer 1 | Customer Concentration Risk | Trade Receivables
Schedule Of Significant Accounting Policies [Line Items]
Revenue				$ 4,500,000

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - Recurring Basis - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Assets:
Total Assets	$ 4,287	$ 4,843
Liabilities:
Total Liabilities	1,681	592
Mutual Fund
Assets:
Total Assets	593	590
Interest Rate Swap
Liabilities:
Total Liabilities	92	109
Warrant Liability
Liabilities:
Total Liabilities	1,589
Debt for Forward Share Repurchase Agreement
Liabilities:
Total Liabilities		483
Certificates of Deposit
Assets:
Total Assets	3,694	4,253
Level 1
Assets:
Total Assets	593	590
Level 1 | Mutual Fund
Assets:
Total Assets	593	590
Level 2
Assets:
Total Assets	3,694	4,253
Liabilities:
Total Liabilities	1,681	592
Level 2 | Interest Rate Swap
Liabilities:
Total Liabilities	92	109
Level 2 | Warrant Liability
Liabilities:
Total Liabilities	1,589
Level 2 | Debt for Forward Share Repurchase Agreement
Liabilities:
Total Liabilities		483
Level 2 | Certificates of Deposit
Assets:
Total Assets	$ 3,694	$ 4,253

Fair Value Measurements - Sum_2

Fair Value Measurements - Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Parenthetical) (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Short term investments maturity term	4 months	4 months
Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Short term investments maturity term	12 months	12 months

Fair Value Measurements - Sum_3

Fair Value Measurements - Summary of Values of Short-term Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Mutual Fund
Schedule Of Available For Sale Securities [Line Items]
Short-term investments, Cost	$ 587	$ 580
Short-term investments, Unrealized gains	6	10
Short-term investments, Fair value	593	590
Certificates of Deposit
Schedule Of Available For Sale Securities [Line Items]
Short-term investments, Cost	3,694	4,253
Short-term investments, Fair value	$ 3,694	$ 4,253

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Transfers of liabilities into or out of level 2 or level 3	$ 0	$ 0

Fair Value Measurements - Sum_4

Fair Value Measurements - Summary of Net Realized and Unrealized (Gains) and Losses Related to Level 3 Liabilities (Details) - Level 3 - Preference Shares $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Net Realized and Unrealized (Gains) Losses	$ (2,486)
Research and Development
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Net Realized and Unrealized (Gains) Losses	(941)
Sales and Marketing
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Net Realized and Unrealized (Gains) Losses	(372)
General and Administrative
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Net Realized and Unrealized (Gains) Losses	(756)
Financial Income (Expense), Net
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Net Realized and Unrealized (Gains) Losses	$ (417)

Derivative Financial Instrume_3

Derivative Financial Instruments - Additional Information (Details) € in Millions, $ in Millions	Mar. 31, 2021USD ($)	Mar. 31, 2021EUR (€)	Dec. 31, 2020USD ($)	Dec. 31, 2020EUR (€)
Interest Rate Swap | Not Designated as Hedging Instruments
Derivative Instruments Gain Loss [Line Items]
Derivative, notional amount	$ 10	€ 8.6	$ 11.6	€ 9.5

Derivative Financial Instrume_4

Derivative Financial Instruments - Schedule of Gain (Losses) in Condensed Consolidated Statement of Operations Related to Derivative Contracts (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Derivative Instruments Gain Loss [Line Items]
Total	$ 13	$ 7
Interest Rate Swap | Financial Expense, Net
Derivative Instruments Gain Loss [Line Items]
Gain loss on interest rate derivative instruments	$ 13	$ 7

Derivative Financial Instrume_5

Derivative Financial Instruments - Schedule of Fair Value Derivative Contracts Reported in Condensed Consolidated Balance Sheet (Details) - Not Designated as Hedging Instruments - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Derivative Instruments Gain Loss [Line Items]
Derivative, total	$ 92	$ 109
Interest Rate Swap | Other Long-Term Liabilities
Derivative Instruments Gain Loss [Line Items]
Derivative on interest rate	$ 92	$ 109

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets, Net- Summary of Goodwill (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
Balance as of December 31, 2020	$ 16,657
Effect of exchange rate	(45)
Balance as of March 31, 2021	$ 16,612

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets, Net- Summary of Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Acquired Finite Lived Intangible Assets [Line Items]
Gross	$ 11,767	$ 11,797
Accumulated amortization	4,611	4,223
Net	7,156	7,574
Developed Technology
Acquired Finite Lived Intangible Assets [Line Items]
Gross	2,737	2,742
Accumulated amortization	1,731	1,576
Net	1,006	1,166
Customer Relationships
Acquired Finite Lived Intangible Assets [Line Items]
Gross	8,903	8,925
Accumulated amortization	2,829	2,598
Net	6,074	6,327
Patent
Acquired Finite Lived Intangible Assets [Line Items]
Gross	127	130
Accumulated amortization	51	49
Net	$ 76	$ 81

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets, Net - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization expense	$ 403,000	$ 422,000

Goodwill and Intangible Asset_6

Goodwill and Intangible Assets, Net - Summary of Estimated Future Amortization Expense (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
2021 (remaining nine months)	$ 1,004
2022	1,160
2023	1,056
2024	853
2025	639
2026 and thereafter	2,444
Net	$ 7,156	$ 7,574

Other Assets - Schedule of Othe

Other Assets - Schedule of Other Current Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Other Assets [Abstract]
VAT receivables	$ 236	$ 1,347
Receivables from suppliers	1,249	542
Credit for tax other than income tax	589	119
Income tax receivables	94	69
Other receivables	3,054	57
Total other current assets	$ 5,222	$ 2,134

Other Assets - Schedule of Ot_2

Other Assets - Schedule of Other Long-Term Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Other Assets [Abstract]
Non-current income tax credit (advances and tax reduced at sources)	$ 54	$ 1,509
Miscellaneous	245	288
Total other long-term assets	$ 299	$ 1,797

Bank and Other Borrowings - Add

Bank and Other Borrowings - Additional Information (Details)	3 Months Ended
	Mar. 31, 2021USD ($)	Mar. 31, 2020USD ($)	Apr. 15, 2021USD ($)	Apr. 15, 2021EUR (€)	Dec. 31, 2020USD ($)
Bank and Other Borrowings [Line Items]
Line of credit facility, maximum borrowing capacity	$ 7,500,000				$ 7,700,000
Line of credit facility, used	$ 4,400,000				$ 5,300,000
Interest variable rates	1.00%
Weighted average interest rate	1.11%
Interest expense	$ 190,000	$ 218,000
Minimum
Bank and Other Borrowings [Line Items]
Interest variable rates	0.60%
Maximum
Bank and Other Borrowings [Line Items]
Interest variable rates	7.60%
Kaleyra Incorporation | New General Unsecured Loan Agreement | Simest S.p.A. | Subsequent Event
Bank and Other Borrowings [Line Items]
Debt instrument face amount			$ 3,600,000	€ 3,000,000

Bank and Other Borrowings - Sum

Bank and Other Borrowings - Summary of Long-term Bank and Other Borrowings (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Bank and Other Borrowings [Line Items]
Total Financial Liabilities	$ 39,102	$ 42,772
Less: current portion	8,082	10,798
Total long-term portion	$ 31,020	31,974
Contractual Interest Rate, Percentage	1.00%
Unicredit S.p.A. (Line A Tranche (1)
Bank and Other Borrowings [Line Items]
Total Financial Liabilities	$ 2,750	$ 3,235
Maturity	2023-07
Contractual Interest Rate	Euribor 3 months + 3.10%
Contractual Interest Rate, Percentage	3.10%
Interest Nominal Rate	2.80%	2.80%
UniCredit S.p.A. (Line A Tranche (2)
Bank and Other Borrowings [Line Items]
Total Financial Liabilities	$ 132	$ 153
Maturity	2023-11
Contractual Interest Rate	Euribor 3 months + 3.10%
Contractual Interest Rate, Percentage	3.10%
Interest Nominal Rate	2.80%	2.80%
UniCredit S.p.A. (Line B)
Bank and Other Borrowings [Line Items]
Total Financial Liabilities	$ 2,656	$ 3,030
Maturity	2024-05
Contractual Interest Rate	Euribor 3 months + 2.90%
Contractual Interest Rate, Percentage	2.90%
Interest Nominal Rate	2.60%	2.60%
UniCredit S.p.A. (Line C)
Bank and Other Borrowings [Line Items]
Total Financial Liabilities	$ 2,153	$ 2,521
Maturity	2023-08
Contractual Interest Rate	Euribor 3 months + 3.90%
Contractual Interest Rate, Percentage	3.90%
Interest Nominal Rate	3.36%	3.36%
Intesa Sanpaolo S.p.A. (Line 1)
Bank and Other Borrowings [Line Items]
Total Financial Liabilities	$ 744	$ 931
Maturity	2022-04
Contractual Interest Rate	Euribor 3 months + 1.80%
Contractual Interest Rate, Percentage	1.80%
Interest Nominal Rate	1.26%	1.26%
Intesa Sanpaolo S.p.A. (Line 2)
Bank and Other Borrowings [Line Items]
Total Financial Liabilities	$ 3,824	$ 4,292
Maturity	2024-04
Contractual Interest Rate	Euribor 3 months + 2.60%
Contractual Interest Rate, Percentage	2.60%
Interest Nominal Rate	2.06%	2.06%
Intesa Sanpaolo S.p.A. (Line 3)
Bank and Other Borrowings [Line Items]
Total Financial Liabilities	$ 9,265	$ 9,688
Maturity	2026-06
Contractual Interest Rate	Euribor 3 months + 1.65%
Contractual Interest Rate, Percentage	1.65%
Interest Nominal Rate	1.11%	1.11%
Intesa Sanpaolo S.p.A. (Line 4)
Bank and Other Borrowings [Line Items]
Total Financial Liabilities	$ 6,439	$ 6,734
Maturity	2026-07
Contractual Interest Rate	Euribor 3 months + 1.70%
Contractual Interest Rate, Percentage	1.70%
Interest Nominal Rate	1.16%	1.16%
UBI Banca S.p.A. (Line 1)
Bank and Other Borrowings [Line Items]
Total Financial Liabilities	$ 125	$ 209
Maturity	2021-08
Contractual Interest Rate	Euribor 3 months + 1.25%
Contractual Interest Rate, Percentage	1.25%
Interest Nominal Rate	1.25%	1.25%
UBI Banca S.p.A. (Line 2)
Bank and Other Borrowings [Line Items]
Total Financial Liabilities	$ 692	$ 1,031
Maturity	2021-10
Contractual Interest Rate	Euribor 3 months +1.95%
Contractual Interest Rate, Percentage	1.95%
Interest Nominal Rate	1.41%	1.41%
Monte dei Paschi di Siena S.p.A. (Line 1)
Bank and Other Borrowings [Line Items]
Total Financial Liabilities	$ 256	$ 328
Maturity	2022-04
Contractual Interest Rate, Percentage	0.95%
Interest Nominal Rate	0.95%	0.95%
Monte dei Paschi di Siena S.p.A. (Line 2)
Bank and Other Borrowings [Line Items]
Total Financial Liabilities	$ 1,949	$ 2,037
Maturity	2023-06
Contractual Interest Rate, Percentage	1.50%
Interest Nominal Rate	1.50%	1.50%
Banco BPM S.p.A. (Line 1)
Bank and Other Borrowings [Line Items]
Total Financial Liabilities	$ 912	$ 1,056
Maturity	2023-06
Contractual Interest Rate	Euribor 3 months + 2.00%
Contractual Interest Rate, Percentage	2.00%
Interest Nominal Rate	2.00%	2.00%
Banco BPM S.p.A. (Line 3)
Bank and Other Borrowings [Line Items]
Total Financial Liabilities	$ 6,086	$ 6,355
Maturity	2024-09
Contractual Interest Rate	Euribor 3 months + 3.00%
Contractual Interest Rate, Percentage	3.00%
Interest Nominal Rate	2.46%	2.46%
Simest 1
Bank and Other Borrowings [Line Items]
Total Financial Liabilities	$ 293	$ 307
Maturity	2023-12
Contractual Interest Rate, Percentage	0.50%
Interest Nominal Rate	0.50%	0.50%
Simest 2
Bank and Other Borrowings [Line Items]
Total Financial Liabilities	$ 291	$ 305
Maturity	2023-12
Contractual Interest Rate, Percentage	0.50%
Interest Nominal Rate	0.50%	0.50%
Simest 3
Bank and Other Borrowings [Line Items]
Total Financial Liabilities	$ 535	$ 560
Maturity	2023-12
Contractual Interest Rate, Percentage	0.50%
Interest Nominal Rate	0.50%	0.50%

Bank and Other Borrowings - S_2

Bank and Other Borrowings - Summary of Payments Obliged (Details) $ in Thousands	Mar. 31, 2021USD ($)
Bank And Other Borrowings [Abstract]
2021 (remaining nine months)	$ 5,807
2022	10,819
2023	10,537
2024	6,160
2025	3,626
2026 and thereafter	2,153
Total	$ 39,102

Debt for Forward Share Purcha_2

Debt for Forward Share Purchase Agreements - Additional Information (Details) - USD ($)	Mar. 29, 2021	Feb. 25, 2021	Mar. 02, 2021	Dec. 31, 2020	Mar. 31, 2021
Debt Instrument [Line Items]
Business combination, obligation					$ 128,000
Forward Share Purchase Agreement
Debt Instrument [Line Items]
Debt Instrument, carrying amount					$ 0
Forward Share Purchase Agreement | Nomura Global Financial Products | Kaleyra Incorporation
Debt Instrument [Line Items]
Prepayment amount transferred		$ 17,000,000
Business combination contingent consideration liability except accrued interest payable		$ 0
Forward Share Purchase Agreement | Open Market
Debt Instrument [Line Items]
Business combination, shares acquired				43,930
Forward Share Purchase Agreement | Open Market | Third Yakira Amendment
Debt Instrument [Line Items]
Business combination, shares acquired	219		219
Business combination, obligation	$ 0
Forward Share Purchase Agreement | Open Market | Third Yakira Amendment | Minimum
Debt Instrument [Line Items]
Business combination, share price per share			$ 11

Notes Payable - Additional Info

Notes Payable - Additional Information (Details)	Feb. 04, 2021USD ($)shares	May 01, 2020USD ($)shares	Apr. 16, 2020USD ($)d$ / shares	Nov. 25, 2019USD ($)	Mar. 31, 2021USD ($)	Dec. 31, 2020USD ($)
Debt Instrument [Line Items]
Notes, interest rate description					Interest on the Business Combination Convertible Notes will accrue at a fixed interest rate equal to the one-year US dollar LIBOR interest rate published in The Wall Street Journal on the Business Combination Date, plus a margin of one percent (1%) per annum. Interest will be due and payable annually on each of (1) the date which is the twelve-month anniversary of the Business Combination Date and (2) on the date which is the twenty-four-month anniversary of the Business Combination Date. All interest shall be computed on the basis of a 365-day year and the actual number of days elapsed.
Contractual Interest Rate, Percentage					1.00%
Outstanding principal balance					50.00%
Number of business days after the Company receives such Payoff Financing Proceeds					10 days
Percentage of remaining outstanding principal balance					100.00%
Notes converted description					Business Combination Convertible Notes are not paid in full on or before the applicable Maturity Date, then at any time after the sixtieth business day after the Maturity Date, assuming payment in full has not been made prior to such date, the outstanding principal amount of these notes, together with all accrued but unpaid interest on these notes, may be converted into shares of Company common stock, in part or in whole, at the option of the holder of these notes by providing written notice at least three business days prior to the date of conversion.
Business combination transaction related costs				$ 13,100,000	$ 405,000
Common stock value					3,000	$ 3,000
Warrants issued | shares		0
Cowen Investments and Chardan
Debt Instrument [Line Items]
Aggregate settlement of investment shares | shares		440,595
Debt instrument face amount		$ 2,700,000
Cowen Investments
Debt Instrument [Line Items]
Aggregate settlement of investment shares | shares		374,506
Debt instrument face amount		$ 2,300,000				2,300,000
Conversion of common stock shares | shares	303,171	303,171
Business combination contingent consideration liability except accrued interest payable	$ 0
Chardan
Debt Instrument [Line Items]
Aggregate settlement of investment shares | shares		66,089
Loss on settlement		$ (200,000)
Debt instrument face amount		$ 405,000			$ 405,000	405,000
Conversion of common stock shares | shares		53,501
Cowen and Company, LLC and Chardan Capital markets, LLC
Debt Instrument [Line Items]
Business combination transaction related costs			$ 5,400,000
Resale Registration Statement | Cowen and Company, LLC and Chardan Capital markets, LLC
Debt Instrument [Line Items]
Common stock value			$ 2,700,000
Warrants exercise price | $ / shares			$ 0.01
Beneficial ownership limitation percentage			4.99%
Settlement shares, threshold percentage			15.00%
Settlement shares, trailing days | d			10
Maximum
Debt Instrument [Line Items]
Contractual Interest Rate, Percentage					7.60%
Proceeds from equity financing					$ 50,000,000
Cash received from payoff financing proceeds					$ 75,000,000
Minimum
Debt Instrument [Line Items]
Contractual Interest Rate, Percentage					0.60%
Other Current Liabilities | Cowen Investments
Debt Instrument [Line Items]
Accrued interest						63,000
Other Current Liabilities | Chardan
Debt Instrument [Line Items]
Accrued interest					$ 19,000	$ 14,000
Non-convertible Notes
Debt Instrument [Line Items]
Notes payable					0
Business Combination Convertible Notes
Debt Instrument [Line Items]
Notes payable					$ 3,750,000
Outstanding principal balance					50.00%
Business Combination Convertible Notes | Other Current Liabilities
Debt Instrument [Line Items]
Accrued interest					$ 65,000
Convertible Notes | Resale Registration Statement | Cowen and Company, LLC and Chardan Capital markets, LLC
Debt Instrument [Line Items]
Convertible notes			$ 2,700,000
Debt instrument, term			3 years
Repaid earlier interest rate issuance term			1 year
Repaid after interest rate issuance term			2 years
Interest rate			5.00%
Convertible notes, threshold percentage			5.00%
Convertible notes, trailing days | d			10
Esse Effe S.p.A
Debt Instrument [Line Items]
Prepayment amount transferred				6,000,000
Esse Effe S.p.A | Business Combination Convertible Notes
Debt Instrument [Line Items]
Notes payable					3,000,000
Accrued interest					176,000
Maya
Debt Instrument [Line Items]
Prepayment amount transferred				$ 1,500,000
Maya | Business Combination Convertible Notes
Debt Instrument [Line Items]
Notes payable					750,000
Accrued interest					$ 44,000

Accumulated Accumulated Other C

Accumulated Accumulated Other Comprehensive Loss - Schedule of Accumulated Balances Related to Each Component of Other Comprehensive Loss (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021USD ($)
Accumulated Other Comprehensive Income Loss [Line Items]
Other comprehensive income (loss), net of tax	$ 1,101
Cumulative Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(2,836)
Other comprehensive income (loss), net of tax	1,105
Ending balance	(1,731)
Cumulative Net Unrealized Gain (Loss) on Marketable Securities, Net of Tax
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	10
Other comprehensive income (loss), net of tax	(4)
Ending balance	6
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(2,826)
Ending balance	$ (1,725)

Preference Shares Liabilities -

Preference Shares Liabilities - Additional Information (Details)	Feb. 03, 2021Installment	Aug. 31, 2020USD ($)Installment	Mar. 09, 2020	Apr. 15, 2021USD ($)	Mar. 31, 2021USD ($)	Feb. 15, 2021USD ($)	Dec. 31, 2020USD ($)	Nov. 30, 2020USD ($)
Solutions Infini Purchase Agreement
Preference Shares Liabilities [Line Items]
Preference share liabilities					$ 0		$ 0
Modification of 2018 Solutions Infini Purchase Agreement | Solutions Infini
Preference Shares Liabilities [Line Items]
Performance bonuses to be paid date, year			2020
Modification of 2018 Solutions Infini Purchase Agreement | Preferred Stock | Solutions Infini
Preference Shares Liabilities [Line Items]
Preference shares, performance bonuses		$ 1,400,000				$ 826,000		$ 883,000
Number of installments | Installment	2	2
Modification of 2018 Solutions Infini Purchase Agreement | Preferred Stock | Solutions Infini | Payroll and Payroll Related Accrued Liabilities
Preference Shares Liabilities [Line Items]
Preference shares, performance bonuses					$ 340,000
Modification of 2018 Solutions Infini Purchase Agreement | Preferred Stock | Solutions Infini | Subsequent Event
Preference Shares Liabilities [Line Items]
Preference shares, performance bonuses				$ 340,000
Modification of 2018 Solutions Infini Purchase Agreement | COVID-19 | Preferred Stock | Solutions Infini
Preference Shares Liabilities [Line Items]
Preference shares, performance bonuses							$ 3,500,000

Other Current and Long-Term L_3

Other Current and Long-Term Liabilities - Other Current Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Other Liabilities Current [Abstract]
Liabilities for tax other than income tax	$ 437	$ 2,942
Social security liabilities	295	383
Current tax liabilities	886	434
Accrued financial interest	265	1,066
Capital leases	125	138
Other miscellaneous	778	1,025
Total other current liabilities	$ 2,786	$ 5,988

Other Current and Long-Term L_4

Other Current and Long-Term Liabilities - Other Long-Term Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Other Liabilities Noncurrent [Line Items]
Warrant liability	$ 1,589
Capital leases	175	$ 208
Other miscellaneous	302	286
Total other long-term liabilities	2,158	603
Interest Rate Swap
Other Liabilities Noncurrent [Line Items]
Interest rate swaps	$ 92	$ 109

Geographic Information - Summar

Geographic Information - Summary of Revenue by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Segment Reporting Information [Line Items]
Revenue	$ 39,714	$ 33,633
Italy
Segment Reporting Information [Line Items]
Revenue	$ 16,087	$ 14,608
Italy | Geographic Concentration Risk | Revenue
Segment Reporting Information [Line Items]
Concentration risk percentage	40.50%	43.40%
India
Segment Reporting Information [Line Items]
Revenue	$ 11,718	$ 8,893
India | Geographic Concentration Risk | Revenue
Segment Reporting Information [Line Items]
Concentration risk percentage	29.50%	26.40%
United States
Segment Reporting Information [Line Items]
Revenue	$ 5,121	$ 4,289
United States | Geographic Concentration Risk | Revenue
Segment Reporting Information [Line Items]
Concentration risk percentage	12.90%	12.80%
Europe (excluding Italy)
Segment Reporting Information [Line Items]
Revenue	$ 1,418	$ 2,573
Europe (excluding Italy) | Geographic Concentration Risk | Revenue
Segment Reporting Information [Line Items]
Concentration risk percentage	3.60%	7.70%
Rest of the World
Segment Reporting Information [Line Items]
Revenue	$ 5,370	$ 3,270
Rest of the World | Geographic Concentration Risk | Revenue
Segment Reporting Information [Line Items]
Concentration risk percentage	13.50%	9.70%

Geographic Information - Summ_2

Geographic Information - Summary of Long-lived Assets by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Long-lived assets	$ 7,113	$ 6,726
Italy
Segment Reporting Information [Line Items]
Long-lived assets	$ 3,288	$ 2,827
Italy | Geographic Concentration Risk | Long-Lived Assets
Segment Reporting Information [Line Items]
Long-lived assets, Percentage	46.20%	42.00%
India
Segment Reporting Information [Line Items]
Long-lived assets	$ 2,098	$ 1,667
India | Geographic Concentration Risk | Long-Lived Assets
Segment Reporting Information [Line Items]
Long-lived assets, Percentage	29.50%	24.80%
United States
Segment Reporting Information [Line Items]
Long-lived assets	$ 1,719	$ 2,225
United States | Geographic Concentration Risk | Long-Lived Assets
Segment Reporting Information [Line Items]
Long-lived assets, Percentage	24.20%	33.10%
Rest of the World
Segment Reporting Information [Line Items]
Long-lived assets	$ 8	$ 7
Rest of the World | Geographic Concentration Risk | Long-Lived Assets
Segment Reporting Information [Line Items]
Long-lived assets, Percentage	0.10%	0.10%

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Other Commitments [Line Items]
Operating lease, rent expense	$ 192,000	$ 235,000
Amount of contingent liabilities payable	128,000
Provision for contingent liabilities	$ 0
Milan office
Other Commitments [Line Items]
Operating lease, option to renew	true
Operating lease, renewal term	6 years

Commitments and Contingencies_2

Commitments and Contingencies - Schedule of Future Minimum Lease Payments under Leasing Obligations (Details) $ in Thousands	Mar. 31, 2021USD ($)
Operating Lease Liabilities Payments Due [Abstract]
Operating leases, 2021 (remaining nine months)	$ 491
Operating leases, 2022	528
Operating leases, 2023	434
Operating leases, 2024	335
Operating leases, 2025	308
Operating leases, 2026 and thereafter	130
Total minimum lease payments	2,226
Capital leases, 2021 (remaining nine months)	109
Capital leases, 2022	75
Capital leases, 2023	62
Capital leases, 2024	62
Capital leases, 2025	18
Total minimum capital lease payments	326
2021 (remaining nine months)	600
2022	603
2023	496
2024	397
2025	326
2026 and thereafter	130
Total minimum lease payments	$ 2,552

Commitments and Contingencies_3

Commitments and Contingencies - Schedule of Future Minimum Lease Payments under Capital Leases (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Operating Lease Liabilities Payments Due [Abstract]
Total payments	$ 326
Less: interest portion	26
Net capital lease obligation	300
Less: current portion	125	$ 138
Long term portion	$ 175	$ 208

Restricted Stock Units - Summar

Restricted Stock Units - Summary of Outstanding RSUs (Details) - Restricted Stock Units (RSUs)	3 Months Ended
	Mar. 31, 2021$ / sharesshares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares, Non-vested as of December 31, 2020 | shares	3,331,037
Number of shares, Shares vested | shares	(558,396)
Number of shares, Shares granted | shares	939,450
Number of shares, Shares cancelled | shares	(8,150)
Number of shares, Non-vested as of March 31, 2021 | shares	3,703,941
Weighted-average grant date fair value (per share), Non-vested as of December 31, 2020 | $ / shares	$ 7.48
Weighted-average grant date fair value (per share), Vested | $ / shares	8.08
Weighted-average grant date fair value (per share), Granted | $ / shares	16.23
Weighted-average grant date fair value (per share), Cancelled | $ / shares	7.01
Weighted-average grant date fair value (per share), Non-vested as of March 31, 2021 | $ / shares	$ 9.61

Restricted Stock Units - Additi

Restricted Stock Units - Additional Information (Details) - Restricted Stock Units (RSUs) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation expense	$ 4,560	$ 6,204
Unrecognized compensation cost	$ 23,400
Unrecognized compensation cost weighted-average remaining period	1 year 6 months 21 days

Restricted Stock Units - Summ_2

Restricted Stock Units - Summary of RSUs Compensation Expense (Details) - Restricted Stock Units (RSUs) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total	$ 4,560	$ 6,204
Research and Development
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total	971	1,312
Sales and Marketing
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total	522	1,053
General and Administrative
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total	$ 3,067	$ 3,839

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Taxes [Line Items]
Income tax expense (benefit)	$ 34,000	$ (589,000)
Open tax year	2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021
Solutions Infini
Income Taxes [Line Items]
Undistributed earnings and profits by foreign subsidiary	$ 4,900,000
Undistributed profits	0
Expected tax expense due to undistributed earnings	$ 737,000

Warrants - Additional Informati

Warrants - Additional Information (Details) - Warrant	3 Months Ended
	Mar. 31, 2021USD ($)$ / sharesshares
Class Of Warrant Or Right [Line Items]
Business combination, share price per share | $ / shares	$ 11.50
Warrant agreement date	Dec. 12, 2017
Number of fractional shares issued upon exercise of warrants | shares	0
Period after business combination when warrants become exercisable	30 days
Warrants exercisable expiration period after completion of business combination	5 years
Redemption price per warrant | $ / shares	$ 0.01
Minimum period of prior written notice of redemption of warrants	30 days
Minimum price per share required for redemption of warrants | $ / shares	$ 18
Warrants redemption covenant, threshold trading days	20 days
Warrants redemption covenant, threshold consecutive trading days	30 days
Increase in other long term liabilities	$ 534,000
Decrease in additional paid in capital,	344,000
Increase in financial expense net	190,000
Change in fair value of private placement warrants	$ 1,300,000
Warrants or rights outstanding | shares	7,125,232
Warrants exercise | shares	249,706

Net Loss Per Share - Schedule o

Net Loss Per Share - Schedule of Calculation of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Earnings Per Share [Abstract]
Net loss	$ (10,358)	$ (8,823)
Weighted-average shares used in computing net loss per common share, basic and diluted	30,364,943	19,979,589
Net loss per common share, basic and diluted	$ (0.34)	$ (0.44)

Net Loss Per Share - Additional

Net Loss Per Share - Additional Information (Details) - shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Earnings Per Share [Abstract]
Weighted-average number of outstanding shares of common stock excluded from calculation of diluted net loss per share	12,704,582	14,346,056

Transactions with Related Par_3

Transactions with Related Parties - Additional Information (Details)	Feb. 03, 2021Installment	Aug. 31, 2020USD ($)Installment	Mar. 31, 2021USD ($)	Mar. 31, 2020USD ($)Installment	Feb. 15, 2021USD ($)	Dec. 31, 2020USD ($)	Nov. 30, 2020USD ($)
Related Party Transaction [Line Items]
Notes payable outstanding amount due			$ 3,750,000			$ 7,500,000
Preferred Stock | Modification of 2018 Solutions Infini Purchase Agreement | Solutions Infini
Related Party Transaction [Line Items]
Number of installments | Installment	2	2
Preference shares, performance bonuses		$ 1,400,000			$ 826,000		$ 883,000
Studio Legale Chiomenti | Legal Services
Related Party Transaction [Line Items]
Cost incurred for related party services			80,000	$ 56,000
Executive Managers | Modification of 2018 Solutions Infini Purchase Agreement | Solutions Infini
Related Party Transaction [Line Items]
Payment of bonus compensation		$ 1,400,000		$ 3,500,000	$ 826,000		$ 883,000
Number of installments | Installment				2
Executive Managers | Preferred Stock | Modification of 2018 Solutions Infini Purchase Agreement | Solutions Infini
Related Party Transaction [Line Items]
Preference shares, performance bonuses			340,000
Esse Effe and Maya
Related Party Transaction [Line Items]
Notes payable outstanding amount due			3,750,000			7,500,000
Alessandra Levy | Kaleyra S.p.A
Related Party Transaction [Line Items]
Cost incurred for related party services			60,000	$ 57,000
Pietro Calogero | Kaleyra S.p.A
Related Party Transaction [Line Items]
Cost incurred for related party services			12,000	$ 5,000
Accrued Interest | Esse Effe and Maya
Related Party Transaction [Line Items]
Notes payable outstanding amount due			$ 65,000			$ 241,000

Transactions with Related Par_4

Transactions with Related Parties - Schedule of Expenses for Related Parties (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Research and Development
Related Party Transaction [Line Items]
Expenses for related parties	$ 12	$ 5
Sales and Marketing
Related Party Transaction [Line Items]
Expenses for related parties	60	57
General and Administrative
Related Party Transaction [Line Items]
Expenses for related parties	80	56
Financial Expense, Net
Related Party Transaction [Line Items]
Expenses for related parties	$ 44	$ 122

Revenue - Additional Informatio

Revenue - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Disaggregation Of Revenue [Abstract]
Revenue from usage-based fees in total revenue	98.00%	98.00%
Revenue from term-based fees in total revenue	2.00%	2.00%
Deferred revenue	$ 3.1		$ 3.7
Deferred revenue, revenue recognized	$ 1.6

Subsequent Events - Additional

Subsequent Events - Additional Information (Details)	Apr. 15, 2021USD ($)	Apr. 15, 2021EUR (€)	Mar. 31, 2021USD ($)	Feb. 15, 2021USD ($)	Nov. 30, 2020USD ($)	Aug. 31, 2020USD ($)
Preferred Stock | Modification of 2018 Solutions Infini Purchase Agreement | Solutions Infini
Subsequent Event [Line Items]
Preference shares, performance bonuses				$ 826,000	$ 883,000	$ 1,400,000
Executive Managers | Preferred Stock | Modification of 2018 Solutions Infini Purchase Agreement | Solutions Infini
Subsequent Event [Line Items]
Preference shares, performance bonuses			$ 340,000
Subsequent Event | New General Unsecured Loan Agreement | Kaleyra Incorporation
Subsequent Event [Line Items]
Debt instrument, term	6 years
Debt instrument, payment terms	The loan will have a duration of six (6) years starting from the date of disbursement and will have to be repaid in half-yearly installments starting after a two-year pre-amortization period.
Subsequent Event | New General Unsecured Loan Agreement | Kaleyra Incorporation | Simest S.p.A.
Subsequent Event [Line Items]
Debt instrument face amount	$ 3,600,000	€ 3,000,000
Subsequent Event | New General Unsecured Loan Agreement | Kaleyra Incorporation | Fund for Integrated Promotion
Subsequent Event [Line Items]
Debt instrument face amount	505,000	422,000
Subsequent Event | New General Unsecured Loan Agreement | Kaleyra Incorporation | Fund 394/81
Subsequent Event [Line Items]
Debt instrument face amount	$ 3,100,000	€ 2,600,000
Debt instrument, subsidized interest rate	0.055%	0.055%
Debt instrument, reference interest rate	0.55%	0.55%
Subsequent Event | Preferred Stock | Modification of 2018 Solutions Infini Purchase Agreement | Solutions Infini
Subsequent Event [Line Items]
Preference shares, performance bonuses	$ 340,000
Subsequent Event | Executive Managers | Preferred Stock | Modification of 2018 Solutions Infini Purchase Agreement | Solutions Infini
Subsequent Event [Line Items]
Payment of bonus compensation	340,000
Preference shares, performance bonuses	$ 0