Strata Critical Medical warrants expire worthless

Strata Critical Medical, Inc. reported that Velibor Krstic, a ten percent owner, had 1,577,500 warrants to purchase Class A Common Stock expire.

Rhea-AI Filing Summary

Strata Critical Medical, Inc. reported that Velibor Krstic, a ten percent owner, had 1,577,500 warrants to purchase Class A Common Stock expire. These warrants, exercisable at $11.50 per share, expired worthless on May 7, 2026 under a Warrant Agreement dated September 12, 2019. Following the expiration, no warrants of this series remain held by the reporting person.

Insider Trade Summary

Derivative Expiration/Cancellation: 1,577,500 shares

Derivative Expiration/Cancellation 1 txn

Insider Krstic Velibor

Role 10% Owner

Type	Security	Shares	Price	Value
Derivative Expiration/Cancellation	Warrants to purchase Class A Common Stock	1,577,500	$0.00	$0.00

Holdings After Transaction: Warrants to purchase Class A Common Stock — 0 contracts (Direct)

Footnotes (1)

1. F1. The warrants expired worthless on May 7, 2026, according to the terms of the Warrant Agreement dated September 12, 2019.

Key Figures

Expired warrants: 1,577,500 warrants Exercise price: $11.50 per share Underlying shares: 1,577,500 shares +2 more

5 metrics

Expired warrants 1,577,500 warrants Warrants to purchase Class A Common Stock expired worthless on May 7, 2026

Exercise price $11.50 per share Conversion or exercise price of expired warrants

Underlying shares 1,577,500 shares Class A Common Stock underlying the expired warrants

Post-expiration warrant holdings 0 warrants Total derivative shares following transaction

Expiration date May 7, 2026 Warrants expired worthless on this date under Warrant Agreement

Key Terms

Warrants to purchase Class A Common Stock, Class A Common Stock, ten percent owner, Warrant Agreement

4 terms

Warrants to purchase Class A Common Stock financial

"security title is listed as "Warrants to purchase Class A Common Stock""

Class A Common Stock financial

"underlying security title is shown as "Class A Common Stock""

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.

ten percent owner financial

"reporting person Velibor Krstic is marked as a ten percent owner"

Warrant Agreement financial

"warrants expired worthless according to the terms of the Warrant Agreement dated September 12, 2019"

A warrant agreement is the legal document that lays out the rules for stock warrants — special certificates that let their holder buy company shares at a set price within a certain time. It explains how and when warrants can be exercised, transferred, changed, or canceled, and what happens to them if the company raises money or is sold; investors care because these terms affect potential future ownership, dilution of shares, and the real value of the warrants.

FAQ

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

What insider event did Strata Critical Medical (SRTA) report in this Form 4?

Strata Critical Medical reported that ten percent owner Velibor Krstic had 1,577,500 warrants to buy Class A Common Stock expire worthless on May 7, 2026. This reflects the end of a derivative position rather than an open-market share trade.

How many Strata Critical Medical (SRTA) warrants expired for the reporting holder?

A total of 1,577,500 warrants to purchase Strata Critical Medical Class A Common Stock expired. Each warrant related to one underlying share, so the expiration removed rights over 1,577,500 underlying shares tied to this specific warrant series.

What was the exercise price of the expired SRTA warrants?

The expired warrants had an exercise price of $11.50 per share. This means each warrant would have allowed purchase of one share of Class A Common Stock at $11.50 if exercised before expiration, according to the Warrant Agreement terms.

When did the Strata Critical Medical (SRTA) warrants expire?

The warrants expired on May 7, 2026. According to the filing, they lapsed worthless on that date under the Warrant Agreement dated September 12, 2019, ending the reporting person’s rights under this warrant series.

Did Velibor Krstic buy or sell SRTA shares in this Form 4 event?

The Form 4 reports a warrant expiration, not a buy or sell of common shares. 1,577,500 warrants to purchase Class A Common Stock expired worthless, so the derivative position ended without an open-market stock transaction.

What is Velibor Krstic’s position type in Strata Critical Medical (SRTA)?

Velibor Krstic is identified as a ten percent owner of Strata Critical Medical, Inc. In this filing, he reported the expiration of 1,577,500 warrants, a derivative security linked to Class A Common Stock, held through direct ownership.

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

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Accepted by SEC EDGAR 05/08/2026 - 04:08 PM EDT 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

X

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^*

Krstic Velibor

(Last) (First) (Middle)

VIA BARAGGIE 23

(Street)

ASCONA 6612

(City) (State) (Zip)

SWITZERLAND

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/07/2026

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

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
Warrants to purchase Class A Common Stock	$11.5	05/07/2026		H(1)			1,577,500	06/07/2021	05/07/2026	Class A Common Stock	1,577,500	$0	0	D

Explanation of Responses:

1. The warrants expired worthless on May 7, 2026, according to the terms of the Warrant Agreement dated September 12, 2019.

	/s/ Velibor Krstic	05/08/2026
	** 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)