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PRELIMINARY NOTE The unaudited Condensed Consolidated Financial Statements for the three-month and nine-month periods ended

Key Takeaway: Table of Contents unaudited Condensed Consolidated Financial Statements for the three-month and nine-month periods ended September 30, 2019, included herein, have been prepared in accordance with International Financial Reporting Standards ( IFRS ) as issued by the Internationa

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unaudited Condensed Consolidated Financial Statements for the three-month and nine-month periods ended September 30, 2019, included herein, have been prepared in accordance with International Financial Reporting Standards ( IFRS ) as
issued by the International Accounting Standards Board ( IASB ). The Consolidated Financial Statements are presented in U.S. dollars in order to enhance comparability with Cellectis peers, which primarily present their financial
statements in U.S. dollars. All references in this interim report to $, U.S. dollars, and dollars, mean U.S. dollars and all references to and euros mean euros, unless otherwise
This interim report, including Management s Discussion and Analysis of Financial Condition and Results of
Operations, contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 and Section 27A of the Securities Act. All statements other than present and historical facts and conditions
contained in this interim report, including statements regarding our future results of operations and financial position, business strategy, plans and our objectives for future operations, are forward-looking statements. When used in this interim
report, the words anticipate, believe, can, could, estimate, expect, intend, is designed to, may, might, plan,
potential, predict, objective, should, or the negative of these and similar expressions identify forward-looking statements. Actual results, performance or events may differ materially from those
projected in any forward-looking statement. Factors that may cause actual results to differ from those in any forward-looking statement include, without limitation, those described under Risk Factors and Special Note Regarding
Forward-Looking Statements in our Annual Report on Form 20-F filed with the Securities and Exchange Commission on March 13, 2019, as amended on April 25, 2019 (the Annual Report ).
As a result of these factors, we cannot assure you that the forward-looking statements in this interim report will prove to be accurate. Furthermore, if our forward-looking statements prove to be inaccurate, the inaccuracy may be material. In light
of the significant uncertainties in these forward-looking statements, you should not regard these statements as a representation or warranty by us or any other person that we will achieve our objectives and plans in any specified time frame or at
all. We undertake no obligation to publicly update any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.
We own various trademark registrations and applications, and unregistered trademarks and service marks, including Cellectis , TALEN and our corporate logos, and all such trademarks and service marks appearing in this interim report are the property of Cellectis.
The trademarks Calyxt and Calyno are owned by Calyxt. All other trade names, trademarks and service marks of other companies
appearing in this interim report are the property of their respective holders. Solely for convenience, the trademarks and trade names in this interim report may be referred to without the
and symbols, but such references, or the failure of such symbols to appear, should not be construed as any indication that their respective owners will not assert, to the fullest extent
under applicable law, their rights thereto. We do not intend to use or display other companies trademarks and trade names to imply a relationship with, or endorsement or sponsorship of us by, any other companies.
As used in this interim report, the terms Cellectis, we, our, us, and the
Company refer to Cellectis S.A. and its subsidiaries, taken as a whole, unless the context otherwise requires. References to Calyxt refer to Calyxt, Inc.

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PART I FINANCIAL INFORMATION 3
Item 1. Condensed Consolidated Financial Statements (Unaudited) 3
Item 2. Management s Discussion & Analysis of Financial Condition and Results of Operations 48
Item 3. Quantitative and Qualitative Disclosures About Market Risks 62
Item 4. Controls and Procedures 62
PART II OTHER INFORMATION 63
Item 1. Legal Proceedings 63
Item 1A. Risk Factors 63
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds 63
Item 3. Default Upon Senior Securities 63
Item 4. Mine Safety Disclosures 63
Item 5. Other Information 63
Item 6. Exhibits 63

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PART I FINANCIAL INFORMATION
STATEMENTS OF CONSOLIDATED FINANCIAL POSITION
As of
Notes December 31, 2018 September 30, 2019*
ASSETS
Non-current assets
Intangible assets 1,268 1,120
Property, plant, and equipment 6 10,041 16,762
Right-of-use assets 5 46,391
Other non-current financial assets 1,891 5,468
Total non-current assets 13,199 69,740
Current assets
Inventories 275 3,344
Trade receivables 7.1 2,971 8,038
Subsidies receivables 7.2 17,173 21,165
Other current assets 7.3 15,333 15,322
Current financial assets 8.1 388 20,381
Cash and cash equivalents 8.2 451,501 342,485
Total current assets 487,641 410,734
TOTAL ASSETS 500,840 480,475
LIABILITIES
Shareholders equity
Share capital 12 2,765 2,766
Premiums related to the share capital 12 828,525 839,437
Currency translation adjustment (16,668 ) (30,518 )
Retained deficit (326,628 ) (406,347 )
Net income (loss) (78,693 ) (64,703 )
Total shareholders equity - Group Share 409,301 340,636
Non-controlling interests 40,970 41,135
Total shareholders equity 450,272 381,771
Non-current liabilities
Non-current lease debts 9 1,018 44,466
Non-current provisions 15 2,681 2,857
Total non-current liabilities 3,699 47,323
Current liabilities
Current lease debts 9 333 2,996
Trade payables 9 15,883 19,761
Deferred revenues and contract liabilities 11 20,754 19,586
Current provisions 15 1,530 1,891
Other current liabilities 10 8,369 7,147
Total current liabilities 46,869 51,381
TOTAL LIABILITIES AND SHAREHOLDERS EQUITY 500,840 480,475
The accompanying notes form an integral part of these unaudited Interim Condensed Consolidated Financial

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UNAUDITED STATEMENTS OF CONSOLIDATED OPERATIONS
For the nine-month period ended September 30,
$ in thousands, except per share amounts
For the nine-month period ended September 30,
Notes 2018 2019*
Revenues and other income
Revenues 3.1 11,861 10,756
Other income 3.1 6,592 5,887
Total revenues and other income 18,453 16,643
Operating expenses
Cost of revenue 3.2 (2,016 ) (5,698 )
Research and development expenses 3.2 (55,169 ) (61,604 )
Selling, general and administrative expenses 3.2 (36,772 ) (34,270 )
Other operating income (expenses) (138 ) (9 )
Total operating expenses (94,095 ) (101,582 )
Operating income (loss) (75,642 ) (84,938 )
Financial gain (loss) 13,598 11,073
Income tax
Net income (loss) (62,044 ) (73,865 )
Attributable to shareholders of Cellectis (55,425 ) (64,703 )
Attributable to non-controlling interests (6,619 ) (9,162 )
Basic / Diluted net income (loss) per share attributable to shareholders of Cellectis 14
Basic net income (loss) attributable to shareholders of Cellectis per share ($ /share) (1.38 ) (1.52 )
Diluted net income (loss) attributable to shareholders of Cellectis per share ($ /share) (1.38 ) (1.52 )
The accompanying notes form an integral part of these unaudited Interim Condensed Consolidated Financial

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UNAUDITED INTERIM STATEMENTS OF CONSOLIDATED COMPREHENSIVE INCOME (LOSS)
For the nine-month period ended September 30,
For the nine-month period ended September 30,
2018 2019
Net income (loss) (62,044 ) (73,865 )
Actuarial gains and losses (441 )
Other comprehensive income (loss) that will not be reclassified subsequently to income or loss (441 )
Currency translation adjustment (16,071 ) (13,596 )
Commodity derivative contracts (55 )
Other comprehensive income (loss) that will be reclassified subsequently to income or loss (16,071 ) (13,650 )
Total Comprehensive income (loss) (78,114 ) (87,957 )
Attributable to shareholders of Cellectis (70,821 ) (79,032 )
Attributable to non-controlling interests (7,294 ) (8,925 )
The accompanying notes form an integral part of these unaudited Interim Condensed Consolidated Financial

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UNAUDITED STATEMENTS OF CONSOLIDATED OPERATIONS
For the three-month period ended September 30,
$ in thousands, except per share amounts
For the three-month period ended September 30,
Notes 2018 2019*
Revenues and other income
Revenues 3.1 906 8,487
Other income 3.1 1,286 1,719
Total revenues and other income 2,192 10,206
Operating expenses
Cost of revenue 3.2 (868 ) (4,256 )
Research and development expenses 3.2 (18,694 ) (21,596 )
Selling, general and administrative expenses 3.2 (11,562 ) (10,967 )
Other operating income (expenses) 30 (38 )
Total operating expenses (31,096 ) (36,857 )
Operating income (loss) (28,904 ) (26,651 )
Financial gain (loss) 3,591 7,167
Income tax
Net income (loss) (25,313 ) (19,484 )
Attributable to shareholders of Cellectis (22,805 ) (15,999 )
Attributable to non-controlling interests (2,508 ) (3,485 )
Basic / Diluted net income (loss) per share attributable to shareholders of Cellectis 14
Basic net income (loss) attributable to shareholders of Cellectis per share ( $ /share) (0.54 ) (0.38 )
Diluted net income (loss) attributable to shareholders of Cellectis per share ( $ /share) (0.54 ) (0.38 )

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UNAUDITED INTERIM STATEMENTS OF CONSOLIDATED COMPREHENSIVE INCOME (LOSS)
For the three-month periods ended September 30,
For the three-month period ended September 30,
2018 2019
Net income (loss) (25,313 ) (19,484 )
Actuarial gains and losses (196 )
Other comprehensive income (loss) that will not be reclassified subsequently to income or loss (196 )
Currency translation adjustment (11,537 )
Commodity derivative contracts (2,224 ) (17 )
Other comprehensive income (loss) that will be reclassified subsequently to income or loss (2,224 ) (11,554 )
Total Comprehensive income (loss) (27,537 ) (31,234 )
Attributable to shareholders of Cellectis (25,030 ) (27,734 )
Attributable to non-controlling interests (2,507 ) (3,500 )

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UNAUDITED INTERIM STATEMENTS OF CONSOLIDATED CASH FLOWS
For the nine-month period ended September 30,
For the nine-month period ended September 30,
Notes 2018 2019
Cash flows from operating activities
Net loss for the period (62,044 ) (73,865 )
Reconciliation of net loss and of the cash provided by (used in) operating activities
Adjustments for
Amortization and depreciation 1,730 4,939
Net loss (income) on disposals 87 25
Net financial loss (gain) (13,598 ) (11,073 )
Expenses related to share-based payments 29,164 19,787
Provisions (364 ) 272
Other non cash items 418
Interest (paid) / received 4,928 5,844
Operating cash flows before change in working capital (39,679 ) (54,071 )
Decrease (increase) in inventories 19 (3,105 )
Decrease (increase) in trade receivables and other current assets (1,749 ) (8,150 )
Decrease (increase) in subsidies receivables (6,502 ) (5,012 )
(Decrease) increase in trade payables and other current liabilities 7,357 3,950
(Decrease) increase in deferred income (6,981 ) 129
Change in working capital (7,856 ) (12,189 )
Net cash flows provided by (used in) operating activities (47,535 ) (66,260 )
Cash flows from investment activities
Proceeds from disposal of property, plant and equipment 19 414
Acquisition of intangible assets 4 (32 )
Acquisition of property, plant and equipment (2,419 ) (10,277 )
Net change in non-current financial assets 223 (3,604 )
Sale (Acquisition) of current financial assets 39,853 (19,840 )
Net cash flows provided by (used in) investing activities 37,680 (33,339 )
Cash flows from financing activities
Increase in share capital net of transaction costs 186,433
Shares of Calyxt issued to / (purchased from) third parties 49,665 (332 )
Payments on lease debts (65 ) (2,505 )
Treasury shares 297
Net cash flows provided by (used in) financing activities 236,330 (2,837 )
(Decrease) increase in cash and cash equivalents 226,475 (102,435 )
Cash and cash equivalents at the beginning of the year 256,380 451,501
Effect of exchange rate changes on cash (7,080 ) (6,581 )
Cash and cash equivalents at the end of the period 8 475,775 342,485
The accompanying notes form an integral part of these unaudited Interim Condensed Consolidated Financial

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UNAUDITED STATEMENTS OF CHANGES IN CONSOLIDATED SHAREHOLDERS EQUITY
For the nine-month period ended September 30,
$ in thousands, except share data
Share Capital Ordinary Shares Equity
Notes Number of shares Amount Premiums related to share capital Treasury shares reserve Currency translation adjustment Retained earnings (deficit) Income (Loss) attributable to shareholders of Cellectis Non controlling interests Total Shareholders Equity
As of January 1, 2018, as restated (*) 35,960,062 2,367 614,037 (297 ) 1,834 (253,702 ) (99,368 ) 264,872 19,113 283,985
Net Loss (55,425 ) (55,425 ) (6,619 ) (62,044 )
Other comprehensive income (loss) (15,396 ) (15,396 ) (675 ) (16,071 )
Total comprehensive income (loss) (15,396 ) (55,425 ) (70,821 ) (7,294 ) (78,114 )
Allocation of prior period loss (99,368 ) 99,368
Capital Increase 6,146,000 379 178,209 178,588 178,588
Transaction with subsidiaries (1) 26,680 26,680 22,986 49,665
Treasury shares 297 (59 ) 238 238
Exercise of share warrants, employee warrants and stock options 323,364 19 7,825 7,845 7,845
Non-cash stock-based compensation expense 13 23,282 23,282 5,882 29,164
Other movements (35 ) (35 ) (15 ) (50 )
As of September 30, 2018 42,429,426 2,765 823,353 (13,561 ) (326,484 ) (55,425 ) 430,648 40,672 471,320
As of January 1, 2019 42,430,069 2,765 828,525 (16,668 ) (326,628 ) (78,693 ) 409,301 40,970 450,272
Net Loss (64,703 ) (64,703 ) (9,162 ) (73,865 )
Other comprehensive income (loss) (13,850 ) (479 ) (14,329 ) 237 (14,092 )
Total comprehensive income (loss) (13,850 ) (479 ) (64,703 ) (79,032 ) (8,925 ) (87,957 )
Allocation of prior period loss (78,693 ) 78,693
Capital Increase 12 15,600 1 (1 )
Transaction with subsidiaries (2) (543 ) (543 ) 211 (332 )
Non-cash stock-based compensation expense 13 10,909 10,909 8,879 19,787
Other movements 3 (3 )
As of September 30, 2019 42,445,669 2,766 839,437 (30,518 ) (406,347 ) (64,703 ) 340,636 41,135 381,771
The accompanying notes form an integral part of these unaudited Interim Condensed Consolidated Financial Statements

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NOTES TO THE INTERIM CONSOLIDATED FINANCIAL STATEMENTS
Cellectis S.A. (hereinafter Cellectis or we ) is a limited liability company ( soci t
anonyme ) registered and domiciled in Paris, France. We are a clinical-stage biotechnological company, employing our core proprietary technologies to develop
best-in-class products in the field of immuno-oncology. Our product candidates, based on gene-edited T-cells that express
chimeric antigen receptors, or CARs, seek to harness the power of the immune system to target and eradicate cancer cells. Our gene-editing technologies allow us to create allogeneic CAR T-cells, meaning they
are derived from healthy donors rather than the patients themselves. Our gene-editing expertise also enables us to develop product candidates that feature additional safety and efficacy attributes, including control properties designed to prevent
them from attacking healthy tissues, to enable them to tolerate standard oncology treatments, and to equip them to resist mechanisms that inhibit immune-system activity. In addition to our focus on immuno-oncology, we are exploring the use of our
gene-editing technologies in other therapeutic applications, as well as to develop healthier food products for a growing population.
Cellectis, Inc., Cellectis Biologics Inc. (which was incorporated on January 18, 2019) and Calyxt, Inc. are sometimes referred to as a consolidated group of companies as the Group.
Note 2. Accounting principles
The Interim Condensed Consolidated Financial Statements of Cellectis as of September 30, 2019 and for the three-month and
nine-month periods ended September 30, 2019 were approved by our Board of Directors on November 6, 2019.
The Interim Condensed Consolidated
Financial Statements are presented in U.S. dollars. See Note 2.4.
The Interim Condensed Consolidated Financial Statements as of September 30, 2019
and for the three-month and nine-month periods ended September 30, 2019 have been prepared in accordance with IAS 34 Interim Financial Reporting, as issued by the International Accounting Standards Board ( IASB ).
The Interim Condensed Consolidated Financial Statements as of September 30, 2019 and for the three-month and nine-month periods ended September 30,
2019 have been prepared using the same accounting policies and methods as those applied for the year ended December 31, 2018, except as described below related to the new or amended standards applied.
IFRS include International Financial Reporting Standards ( IFRS ), International Accounting Standards ( the IAS ), as well as the
interpretations issued by the Standards Interpretation Committee ( the SIC ), and the International Financial Reporting Interpretations Committee ( IFRIC ).
Application of new or amended standards or new amendments
The following pronouncements and related amendments have been adopted by us from January 1, 2019 but had no significant impact on the Interim Condensed
Consolidated Financial Statements:

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Standards, interpretations and amendments issued but not yet effective
The following pronouncements and related amendments are applicable for accounting periods beginning after January 1, 2020. We do not anticipate that the
adoption of these pronouncements and amendments will have a material impact on our results of operations, financial position or cash flows:
2.2 IFRS16 application
Since January 1, 2019, Cellectis has applied the new standard IFRS 16 Leases .
Under this standard, a financial asset and a financial liability are recognized for Group leases that meet the standard s criteria.
The financial statements for the 2018 financial year have not been restated in accordance with the transition options of IFRS 16 elected by the Group since
Cellectis has applied the modified retrospective approach.
The Group uses the two capitalization exemptions provided by the standard:
The Group has also applied the following practical expedients at the transition date:
The following discount rates have been applied:
The main changes introduced by IFRS 16 are the following:
Capitalization of the right-of-use assets for real-estate lease contracts:
Identified lease contracts mainly concern Cellectis Headquarters and R&D buildings in Paris, New York and Raleigh, North Carolina, USA and
Calyxt s Headquarters and its production and storage areas in Roseville, Minnesota, USA.
For purposes of IFRS 16, the lease term corresponds to the non-terminable period as extended, if applicable, by renewal options whose exercise by the Group are reasonably certain.
Last updated: Nov 6, 2019