Guerrilla RF (GUER) grants director 15,625 fully vested stock options

Rhea-AI Filing Summary

Guerrilla RF, Inc. director William J. Pratt reported a new compensation award and updated equity holdings. He received a grant of 15,625 stock options on May 15, 2026 with an exercise price of $3.05 per share, which are fully vested and exercisable and expire on May 15, 2036.

After this grant, Pratt holds 151,789 shares of common stock directly and 1,000 shares indirectly through his spouse. He also has existing derivatives, including a warrant for 21,139 shares at $2.50 per share and several smaller stock option positions with exercise prices between $1.42 and $3.19 per share.

Insights

Equity compensation analyst

Director receives routine stock option grant adding to existing holdings.

The filing shows William J. Pratt, a director of Guerrilla RF, Inc., receiving a grant of 15,625 stock options at an exercise price of $3.05 per share. The options are fully vested and exercisable, with a long-dated expiration in 2036, indicating standard board compensation rather than a market trade.

There are no open‑market buys or sells; the only new transaction is this grant. Pratt continues to hold 151,789 common shares directly, 1,000 indirectly via his spouse, plus a warrant for 21,139 shares and several smaller option awards. Overall, this appears to be a routine compensation update, so the informational impact for investors is modest and neutral.

Insider Trade Summary

8 transactions reported

Mixed 8 txns

Insider PRATT WILLIAM J

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Stock Option	15,625	$0.00	$0.00
holding	Stock Option	--	--	--
holding	Stock Option	--	--	--
holding	Stock Option	--	--	--
holding	Stock Option	--	--	--
holding	Warrant	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Stock Option — 24,489 shares (Direct); Warrant — 21,139 shares (Direct); Common Stock — 151,789 shares (Direct); Common Stock — 1,000 shares (Indirect, Held by Spouse)

Footnotes (1)

1. F1. The shares subject to the option are fully vested and exercisable.

Key Figures

New stock option grant: 15,625 options Option exercise price: $3.05/share Direct common shares: 151,789 shares +5 more

8 metrics

New stock option grant 15,625 options Granted May 15, 2026 at $3.05 exercise price

Option exercise price $3.05/share New 15,625-option award, expires May 15, 2036

Direct common shares 151,789 shares Common stock held directly after reported transactions

Indirect common shares 1,000 shares Common stock held indirectly, held by spouse

Warrant underlying shares 21,139 shares Warrant at $2.50 exercise price, expiring September 28, 2029

Stock option position 1,971 shares at $3.19 Stock option expiring October 30, 2030

Stock option position 1,967 shares at $2.20 Stock option expiring September 11, 2029

Stock option position 2,462 shares at $1.42 Stock option expiring October 26, 2026

Key Terms

Stock Option, Warrant, fully vested and exercisable, indirect ownership

4 terms

Stock Option financial

"Stock Option award for 15,625 shares of Common Stock"

A stock option is a contract that gives you the right to buy or sell a company's stock at a specific price within a certain time frame. People use them to potentially make money if the stock's price moves favorably or to protect against losses. It's like holding a coupon that can be used to buy or sell stock at a set price later on.

Warrant financial

"Warrant over 21,139 shares of Common Stock at $2.50"

A warrant is a time-limited financial contract that gives its holder the right to buy a company's shares at a set price before a specified date, like a coupon that lets you purchase stock at a fixed discount for a limited time. It matters to investors because warrants offer leveraged exposure to a stock’s upside and can dilute existing shareholders if exercised, so they affect potential gains and the company’s outstanding share count.

fully vested and exercisable financial

"The shares subject to the option are fully vested and exercisable"

indirect ownership financial

"Indirect ownership of 1,000 common shares held by spouse"

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Form 4 Insider Transactions: What Each Field Means →

Accepted by SEC EDGAR 05/19/2026 - 10:38 AM Learn about SEC filing dates

FAQ

What did Guerrilla RF (GUER) director William J. Pratt report in this Form 4?

He reported a new grant of 15,625 stock options and his updated share and derivative holdings. The filing lists direct and indirect common stock ownership plus existing warrants and options, clarifying his total equity exposure to Guerrilla RF, Inc. as of May 15, 2026.

How many Guerrilla RF (GUER) stock options were granted to William J. Pratt?

He received 15,625 stock options on May 15, 2026. These options have an exercise price of $3.05 per share, are fully vested and exercisable, and expire on May 15, 2036, providing long-term potential equity upside if he chooses to exercise.

What are William J. Pratt’s common stock holdings in Guerrilla RF (GUER) after this filing?

After the reported transactions, he holds 151,789 shares of Guerrilla RF common stock directly and 1,000 shares indirectly through his spouse. These positions are separate from his derivative holdings like warrants and stock options disclosed in the same Form 4.

Does the Guerrilla RF (GUER) Form 4 show any stock being bought or sold on the market?

No open-market purchases or sales are reported. The only new transaction is a stock option grant coded as an acquisition. The remaining entries describe existing holdings in common stock, warrants, and options rather than new buy or sell activity.

What derivative positions in Guerrilla RF (GUER) does William J. Pratt hold?

He holds a warrant for 21,139 underlying common shares at $2.50 and several stock option awards with exercise prices between $1.42 and $3.19. The new 15,625-option grant at $3.05 expires in 2036, adding to these existing derivative positions.

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^*

PRATT WILLIAM J

(Last) (First) (Middle)

2610 SOUTHERN GATES DR.

(Street)

GREENSBORO NORTH CAROLINA 27410

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Guerrilla RF, Inc. [ GUER ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/15/2026

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								151,789	D
Common Stock								1,000	I	Held by Spouse

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	$1.42							(1)	10/26/2026	Common Stock	2,462		2,462	D
Stock Option	$1.93							(1)	09/25/2028	Common Stock	2,464		2,464	D
Stock Option	$2.2							(1)	09/11/2029	Common Stock	1,967		1,967	D
Stock Option	$3.19							(1)	10/30/2030	Common Stock	1,971		1,971	D
Warrant	$2.5							09/28/2024	09/28/2029	Common Stock	21,139		21,139	D
Stock Option	$3.05	05/15/2026		A		15,625		05/15/2026	05/15/2036	Common Stock	15,625	$0	15,625	D

Explanation of Responses:

1. The shares subject to the option are fully vested and exercisable.

	/s/ Iain MacSween, Attorney-in-Fact	05/19/2026
	** 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)