Strata Critical insider has 29.7K shares withheld

Strata Critical Medical, Inc. (SRTA) reported that Co-CEO and General Counsel Melissa M. Tomkiel had 29,730 shares of Class A common stock withheld on September 8, 2026 to satisfy tax withholding obligations upon vesting of restricted stock units.

Rhea-AI Filing Summary

Strata Critical Medical, Inc. (SRTA) reported that Co-CEO and General Counsel Melissa M. Tomkiel had 29,730 shares of Class A common stock withheld on September 8, 2026 to satisfy tax withholding obligations upon vesting of restricted stock units. This tax-withholding disposition left her holding 2,066,617 shares directly. No Rule 10b5-1 trading plan is reported for this transaction.

Insider Trade Summary

Tax Withholding: 29,730 shares

Tax Withholding 1 txn

Insider Tomkiel Melissa M.

Role Co-CEO and General Counsel

Type	Security	Shares	Price	Value
Tax Withholding	Class A common stock, $0.0001 par value per share F1	29,730	$5.31	$158K

Holdings After Transaction: Class A common stock, $0.0001 par value per share — 2,066,617 shares (Direct)

Footnotes (1)

1. F1. Represents shares withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of restricted stock units.

Key Figures

Shares withheld for tax: 29,730 shares Implied share value for withholding: $5.31 per share Shares held after transaction: 2,066,617 shares +1 more

4 metrics

Shares withheld for tax 29,730 shares Shares withheld on September 8, 2026 to satisfy tax withholding obligations upon RSU vesting

Implied share value for withholding $5.31 per share Per-share value used for the 29,730 withheld shares on September 8, 2026

Shares held after transaction 2,066,617 shares Direct Class A common stock holdings of Melissa M. Tomkiel following the September 8, 2026 withholding

RSU-related withholding events in this filing 1 transaction Single reported tax-withholding disposition related to restricted stock unit vesting

Key Terms

restricted stock units, tax withholding obligations, Class A common stock

3 terms

restricted stock units financial

"in connection with the vesting of restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

tax withholding obligations financial

"shares withheld by the Issuer to satisfy tax withholding obligations"

Class A common stock financial

"Class A common stock, $0.0001 par value per share"

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

FAQ

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

What insider transaction did SRTA report for Melissa M. Tomkiel?

SRTA reported that Melissa M. Tomkiel had 29,730 shares of Class A common stock withheld on September 8, 2026 to cover tax withholding obligations arising from the vesting of restricted stock units. This was not an open-market sale.

How many SRTA shares does Melissa M. Tomkiel hold after the reported transaction?

After the tax-withholding disposition, Melissa M. Tomkiel directly holds 2,066,617 shares of Strata Critical Medical Class A common stock. This figure is reported as her direct ownership following the September 8, 2026 transaction.

Was the SRTA insider transaction executed under a Rule 10b5-1 trading plan?

No. The filing indicates that no Rule 10b5-1 trading plan applies to this transaction. The reported share withholding was in connection with tax obligations on vesting restricted stock units, not under a pre-arranged trading plan.

What price per SRTA share is associated with the tax-withholding transaction?

The transaction reflects a value of $5.31 per share for the 29,730 shares withheld to satisfy tax withholding obligations on September 8, 2026. This value is tied to the shares withheld rather than an open-market trade.

What type of SRTA shares were involved in the insider tax-withholding event?

The transaction involved Class A common stock of Strata Critical Medical, with a par value of $0.0001 per share. These shares were withheld by the company to satisfy the insider’s tax obligations related to vesting restricted stock units.

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

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Available on EDGAR 09/10/2026 - 04:27 PM Accepted by SEC EDGAR 09/10/2026 - 04:26 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^*

Tomkiel Melissa M.

(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 General Counsel

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/08/2026

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	09/08/2026		F		29,730(1)	D	$5.31	2,066,617	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 withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of restricted stock units.

Remarks:

	/s/ Melissa M. Tomkiel	09/10/2026
	** 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)