Sec Form 3 Filing - Whelan, Jr. Robert M. @ iANTHUS CAPITAL HOLDINGS, INC. - 2021-02-05

FORM 3 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 Whelan, Jr. Robert M. 2. Issuer Name and Ticker or Trading Symbol iANTHUS CAPITAL HOLDINGS, INC. [ ITHUF] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O IANTHUS CAPITAL HOLDINGS, INC., 420 LEXINGTON AVENUE, SUITE 414 3. Date of Earliest Transaction (MM/DD/YY) 02/05/2021 (Street) NEW YORK, NY10170 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ 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 Common Shares 50,000 D

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 Options (right to buy) $ 1.63 ( 2 ) ( 1 ) 12/05/2029 Common Shares 116,860 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Whelan, Jr. Robert M. C/O IANTHUS CAPITAL HOLDINGS, INC. 420 LEXINGTON AVENUE, SUITE 414 NEW YORK, NY10170 X Signatures /s/ Julius Kalcevich as Attorney-In-Fact for Robert M. Whelan Jr. 02/05/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )On December 5, 2019, the Issuer granted the Reporting Person options to purchase up to 116,860 common shares. The options vest as follows: 19,477 options vested on June 30, 2020 and the balance of the options vest in 10 equal quarterly installments with the first installment vesting on September 30, 2020. ( 2 )The exercise price is denominated and reported in Canadian Dollars.

Remarks: Exhibit List: Exhibit 24 - Power of Attorney

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).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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