Strata Critical Medical withholds 98,356 shares for taxes

The Co-CEO and CFO's reported transactions include 98,356 shares withheld for tax obligations tied to PSU vesting.

Rhea-AI Filing Summary

Strata Critical Medical, Inc. (SRTA) Co-CEO and CFO William A. Heyburn acquired 177,858 shares of Class A common stock on September 24, 2026, after the Compensation Committee certified that performance criteria for performance-based restricted stock units granted August 29, 2025, had been satisfied. On that date, the issuer withheld 98,356 shares at a reported $5.27 per share to satisfy tax withholding obligations related to PSU vesting.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Heyburn William A.

Role Co-CEO and CFO

Type	Security	Shares	Price	Value
Grant/Award	Class A common stock, $0.0001 par value per share F1	177,858	$0.00	$0.00
Tax Withholding	Class A common stock, $0.0001 par value per share F2	98,356	$5.27	$518K

Holdings After Transaction: Class A common stock, $0.0001 par value per share — 1,757,850 shares (Direct)

Footnotes (2)

1. F1. Represents shares that were acquired upon the certification of the Compensation Committee of the Issuer's Board of Directors of the satisfaction of performance criteria underlying an award of performance-based restricted stock units ("PSUs") granted to the Reporting Person on August 29. 2025.
2. F2. Represents shares withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of PSUs.

Key Figures

Shares acquired: 177,858 shares Shares withheld: 98,356 shares Reported price per share: $5.27 per share

3 metrics

Shares acquired 177,858 shares September 24, 2026

Shares withheld 98,356 shares For tax withholding obligations related to PSU vesting on September 24, 2026

Reported price per share $5.27 per share Shares withheld for tax withholding obligations on September 24, 2026

Key Terms

performance-based restricted stock units, tax withholding obligations, vesting

3 terms

performance-based restricted stock units financial

"award of performance-based restricted stock units ("PSUs")"

Performance-based restricted stock units are a type of employee equity award that converts into company shares only if predefined financial or operational targets are met over a set period. Think of it like a bonus check that becomes stock only when specific goals are hit; it ties pay to results, aligning managers’ incentives with shareholders. Investors care because these awards affect future share count, executive incentives, and signal how management’s success will be measured and rewarded.

tax withholding obligations financial

"to satisfy tax withholding obligations in connection with the vesting of PSUs"

vesting financial

"in connection with the vesting of PSUs"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

FAQ

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

How many shares did SRTA's Co-CEO and CFO acquire?

SRTA Co-CEO and CFO William A. Heyburn acquired 177,858 shares on September 24, 2026, after certification that the performance criteria underlying performance-based restricted stock units granted August 29, 2025, had been satisfied.

How many SRTA shares were withheld for taxes?

The issuer withheld 98,356 shares at $5.27 per share on September 24, 2026, to satisfy tax withholding obligations related to vesting performance-based restricted stock units.

Were SRTA's reported transactions made under a Rule 10b5-1 plan?

No Rule 10b5-1 plan is reported for the September 24, 2026 transactions.

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

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Available on EDGAR 09/25/2026 - 04:42 PM Accepted by SEC EDGAR 09/25/2026 - 04:12 PM Learn about SEC filing dates

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^*

Heyburn William A.

(Last) (First) (Middle)

C/O STRATA CRITICAL MEDICAL, INC.

666 THIRD AVENUE, 25TH FLOOR

(Street)

NEW YORK NEW YORK 10017

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Strata Critical Medical, Inc. [ SRTA ]

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

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Co-CEO and CFO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/24/2026

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
Class A common stock, $0.0001 par value per share	09/24/2026		A		177,858(1)	A	$0	1,856,206	D
Class A common stock, $0.0001 par value per share	09/24/2026		F		98,356(2)	D	$5.27	1,757,850	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. Represents shares that were acquired upon the certification of the Compensation Committee of the Issuer's Board of Directors of the satisfaction of performance criteria underlying an award of performance-based restricted stock units ("PSUs") granted to the Reporting Person on August 29. 2025.

2. Represents shares withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of PSUs.

Remarks:

	/s/ Melissa M. Tomkiel, as attorney-in-fact for William A. Heyburn	09/25/2026
	** 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)