Director Amir Jafri granted 114,055 Quantum-Si (QSI) stock options

Rhea-AI Filing Summary

Quantum-Si Inc director Amir Jafri received a grant of 114,055 stock options on Class A Common Stock at an exercise price of $0.00 per share. The options vest in equal monthly installments beginning on March 31, 2026, subject to continued service. Following this, he directly holds 115,942 Class A shares.

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

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

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Jafri Amir

(Last) (First) (Middle)

C/O QUANTUM-SI INCORPORATED

29 BUSINESS PARK

(Street)

BRANFORD CT 06405

(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)
02/24/2026

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								115,942	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
Stock Option (right to buy)	$0.9302	02/24/2026		A		114,055		(1)	02/24/2036	Class A Common Stock	114,055	$0	114,055	D

Explanation of Responses:

1. The shares underlying this option shall vest in equal monthly installments beginning on March 31, 2026 and on the last day of each month thereafter, subject to continued service through the applicable vesting dates.

	/s/ Christian LaPointe, Ph.D., Attorney-in-Fact.	02/26/2026
	** 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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FAQ

What insider transaction did Quantum-Si (QSI) director Amir Jafri report?

Director Amir Jafri reported receiving a grant of 114,055 stock options on Quantum-Si Class A Common Stock. The grant was recorded at an exercise price of $0.00 per share and represents a new derivative award, not an open-market purchase or sale.

How many Quantum-Si (QSI) stock options were granted to Amir Jafri?

Amir Jafri was granted 114,055 stock options on Quantum-Si Class A Common Stock. These options give a right to buy shares in the future and were issued with a stated exercise price of $0.00 per share according to the Form 4 filing data.

What is the vesting schedule for Amir Jafri’s Quantum-Si (QSI) stock options?

The 114,055 stock options vest in equal monthly installments beginning on March 31, 2026. Vesting continues on the last day of each following month, and each installment requires Mr. Jafri to remain in continued service through the applicable vesting date.

What are Amir Jafri’s Quantum-Si (QSI) share holdings after this Form 4?

After the reported grant, Amir Jafri directly holds 115,942 shares of Quantum-Si Class A Common Stock. He also holds 114,055 stock options as a derivative security, giving him rights to acquire additional shares under the specified vesting schedule and terms.

Does the Quantum-Si (QSI) Form 4 show a buy or sell by Amir Jafri?

The Form 4 shows an acquisition through a grant of 114,055 stock options, classified as a grant, award, or other acquisition. It does not report any open-market buys or sells; the second line simply updates his direct Class A share holdings.