SEC Form 4

FORM 4		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 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* RAKIN KEVIN (Last) (First) (Middle) C/O QUANTUM-SI INCORPORATED 530 OLD WHITFIELD STREET (Street) GUILFORD CT 06437 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol Quantum-Si Inc [ QSI ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 12/15/2022
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	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
Class A Common Stock	12/15/2022		S		89,000(1)	D	$2.1487	1,801,000(2)(3)	I	See Footnote(2)(3)
Class A Common Stock								20,512	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 (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	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 (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (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: 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

Explanation of Responses:

1. Includes 39,000 shares sold by Mr. Rakin and 50,000 shares sold by the Kevin L. Rakin Irrevocable Trust.

2. Consists of (i) 601,000 shares of the Company's Class A common stock held by HighCape Partners QSI II Invest, L.P, (ii) 24,527 shares of the Company's Class A common stock held by HighCape Partners II, L.P. and (iii) 1,175,473 shares of the Company's Class A common stock held by HighCape Partners QP II, L.P. Mr. Rakin and Matt Zuga are the managing members of HighCape Capital II GP, LLC, which is the general partner of HighCape Partners II GP, L.P., which is the general partner of each of HighCape Partners QSI II Invest, L.P, HighCape Partners II, L.P. and HighCape Partners QP II, L.P., and as a result each may be deemed to share voting and investment discretion with respect to the common stock held by such entities.

3. Mr. Rakin disclaims any beneficial ownership of the securities to be held by HighCape Partners QSI II Invest, L.P, HighCape Partners II, L.P. and HighCape Partners QP II, L.P. other than to the extent of any pecuniary interest he may have therein, directly or indirectly.

	/s/ Christian LaPointe, Ph.D., Attorney-in-Fact	12/16/2022
	** Signature of Reporting Person	Date
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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