Sec Form 4 Filing - TAKEDA PHARMACEUTICAL CO LTD @ Calithera Biosciences, Inc. - 2023-04-17

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person TAKEDA PHARMACEUTICAL CO LTD 2. Issuer Name and Ticker or Trading Symbol Calithera Biosciences, Inc. [ CALA] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner _____ Officer (give title below) X __ Other (specify below) Former 10% Owner (Last) (First) (Middle) 1-1, NIHONBASHI-HONCHO 2-CHOME 3. Date of Earliest Transaction (MM/DD/YY) 04/17/2023 (Street) CHUO-KU, TOKYO, M0103-8668 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Series A Convertible Preferred Stock $ 40.08 ( 1 ) 04/17/2023 J( 2 )( 3 ) 1,000,000 10/18/2021 ( 4 ) Common Stock 857,844 ( 2 ) ( 3 ) 0 I See Explanation of Responses ( 5 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other TAKEDA PHARMACEUTICAL CO LTD 1-1, NIHONBASHI-HONCHO 2-CHOME CHUO-KU, TOKYO, M0103-8668 Former 10% Owner Takeda Ventures, Inc. 9625 TOWNE CENTRE DRIVE SAN DIEGO, CA92121 X Signatures /s/ Yoshihiro Nakagawa, Global General Counsel of Takeda Pharmaceutical Company Limited 05/26/2023 Signature of Reporting Person Date /s/ Michael Martin, President, Takeda Ventures, Inc. 05/26/2023 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The Series A preferred stock (the "Preferred Stock") of Calithera Biosciences, Inc. ("Calithera") was convertible at the option of holder into 857,844 shares of common stock of Calithera ("Common Stock") at a conversion price per share of $40.08, subject to price-based anti-dilution adjustments which, if triggered, would result in additional shares of Common Stock being issued upon conversion of the Preferred Stock. ( 2 )The reported securities were redeemed by the Issuer for the following consideration (in the aggregate, the "Repurchase Price"): (i) $4.0 million in aggregate cash consideration, (ii) a right to receive certain securities held by the Issuer and (iii) a contingent value right entitling Takeda Ventures, Inc. ("TVI") to receive all the remaining proceeds from the sale of the Issuer's assets (not to exceed the Repurchase Price Limit), after establishing a reserve, which will be used to pay all expenses and other known, non-contingent liabilities and obligations, and includes reasonable provision for future expenses of liquidation and contingent and unknown liabilities as required by Delaware law. ( 3 )Notwithstanding the foregoing footnote 2, TVI agreed that if the holders of the Common Stock approved the Plan of Dissolution at a special meeting before June 30, 2023, then the Issuer could distribute up to $0.40 per share in a common stock liquidating distribution to the holders of Common Stock prior to any future distribution to Takeda pursuant to the contingent value right. For the avoidance of doubt, if the holders of Common Stock do not approve the Issuer's Plan of Dissolution at a special meeting before June 30, 2023, then the Issuer will not make the aforementioned common stock liquidating distribution to the holders of Common Stock. In no event shall the Repurchase Price exceed a total value of $35 million (the "Repurchase Price Limit"). ( 4 )The Series A convertible preferred stock has no expiration date. ( 5 )The Preferred Stock was directly held by TVI, a wholly owned subsidiary of Takeda Pharmaceuticals U.S.A., Inc. ("TPUSA"). TPUSA is a direct subsidiary of Takeda Pharmaceutical Company Limited (72.70%) and Takeda Pharmaceuticals International AG (27.30%). Takeda Pharmaceuticals International AG is a wholly owned subsidiary of Takeda Pharmaceutical Company Limited. As such, Takeda Pharmaceutical Company Limited is an indirect beneficial owner of the reported securities.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

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