Sec Form 4 Filing - BDC CAPITAL INC. @ Milestone Pharmaceuticals Inc. - 2019-05-08

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 BDC CAPITAL INC. 2. Issuer Name and Ticker or Trading Symbol Milestone Pharmaceuticals Inc. [ MIST] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) SUITE 400, PLACE VILLE MARIE 3. Date of Earliest Transaction (MM/DD/YY) 05/08/2019 (Street) MONTREAL, A8H3B 5E7 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 05/08/2019 P 200,000 A $ 15 2,388,088 ( 1 ) ( 2 ) 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

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other BDC CAPITAL INC. SUITE 400, PLACE VILLE MARIE MONTREAL, A8H3B 5E7 X Signatures /s/Dion Madsen 05/09/2019 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Consists of the purchase of shares reported hereunder and upon the closing of the Issuer's IPO of 1,094,011 shares held by BDC Capital, Inc., or BDC Capital, and 1,094,011 shares held by GO Capital, s.e.c., a fund for which BDC Capital is the general partner and investment manager. BDC Capital has the power to vote and the power to direct the disposition of all such shares held by itself and Go Capital, s.e.c. BDC Capital's investment in our company is managed by Amplitude Ventures Capital Management Inc., or Amplitude, of which Dion Madsen and Jean-Francois Pariseau serve as partners. Go Capital, s.e.c. is managed by Dominique Belanger, Managing Partner, Co-Investments at BDC Capital. BDC Capital retains the right to approve of certain investment, voting or divestiture decisions proposed by Amplitude, such decisions being approved, depending on their quantum and potential impact, by either senior management at BDC Capital or by BDC Capital's investment committee. ( 2 )The Reporting Person disclaims beneficial ownership within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended, or otherwise of such portion of the securities held by GO Capital, s.e.c., in which the Reporting Person has no pecuniary interest.

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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