Absci CEO McClain has 79,860 shares withheld for taxes

Available on EDGAR 10/30/2026 - 04:20 PM EDT Accepted by SEC EDGAR 10/30/2026 - 04:20 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Absci Corp (ABSI) Chief Executive Officer Sean McClain had 79,860 common shares withheld by the issuer on October 29, 2026, to cover the tax withholding obligation tied to vesting of 200,000 performance-based RSUs upon achievement of a closing stock price equal to or exceeding $12.00 per share. The withholding was not a discretionary trade by McClain. He directly held 8,552,402 shares following the transaction.

Insider Trade Summary

Tax Withholding: 79,860 shares

Tax Withholding 1 txn

Insider McClain Sean

Role Chief Executive Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock F1	79,860	$12.10	$966K

Holdings After Transaction: Common Stock — 8,552,402 shares (Direct)

Footnotes (1)

1. F1. Amount reported represents the number of shares withheld by the Issuer to cover the tax withholding obligation in connection with the vesting of 200,000 performance-based RSUs upon achievement of a closing stock price equal to or exceeding $12.00 per share, as previously reported in the Reporting Person's Form 4 filed on March 21, 2024, and does not represent a discretionary trade by the Reporting Person.

Key Figures

Shares withheld: 79,860 shares Reported transaction price: $12.10 per share Performance-based RSUs: 200,000 RSUs +2 more

5 metrics

Shares withheld 79,860 shares October 29, 2026; withheld to cover tax withholding

Reported transaction price $12.10 per share October 29, 2026 withholding transaction

Performance-based RSUs 200,000 RSUs Vesting tied to the withholding transaction

Closing stock price threshold $12.00 per share Threshold for achievement tied to RSU vesting

Direct shares following transaction 8,552,402 shares Sean McClain’s reported position following the transaction

Key Terms

performance-based RSUs, tax withholding obligation, closing stock price

3 terms

performance-based RSUs technical

"vesting of 200,000 performance-based RSUs"

Performance-based restricted stock units (RSUs) are promises to deliver company shares to employees only if the business meets specific goals, such as revenue, profit, stock-price targets, or strategic milestones. For investors, they matter because they change future share supply and align management incentives with company results—like a salesperson whose bonus only pays out when sales targets are hit—so they can affect earnings, dilution, and confidence in leadership.

tax withholding obligation financial

"to cover the tax withholding obligation"

closing stock price market

"closing stock price equal to or exceeding $12.00 per share"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many ABSI shares were withheld from Sean McClain?

The issuer withheld 79,860 common shares to cover a tax withholding obligation. McClain directly held 8,552,402 shares following the October 29, 2026 transaction.

What triggered the ABSI share withholding from Sean McClain?

The withholding related to vesting of 200,000 performance-based RSUs upon achievement of a closing stock price equal to or exceeding $12.00 per share. The RSU vesting was previously reported in McClain’s Form 4 filed on March 21, 2024.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

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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).

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^*

McClain Sean

(Last) (First) (Middle)

C/O ABSCI CORPORATION

18105 SE MILL PLAIN BLVD

(Street)

VANCOUVER WASHINGTON 98683

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Absci Corp [ ABSI ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Executive Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/29/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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
Common Stock	10/29/2026		F		79,860(1)	D	$12.1	8,552,402	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. Amount reported represents the number of shares withheld by the Issuer to cover the tax withholding obligation in connection with the vesting of 200,000 performance-based RSUs upon achievement of a closing stock price equal to or exceeding $12.00 per share, as previously reported in the Reporting Person's Form 4 filed on March 21, 2024, and does not represent a discretionary trade by the Reporting Person.

Remarks:

	/s/ Shelby Walker, attorney-in-fact	10/30/2026
	** 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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)