STOCK TITAN

Guerrilla RF (GUER) director gets 15,625-share stock option grant

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Guerrilla RF, Inc. director Susan Berish Barkal reported her current equity position and a new stock option grant. She received a stock option covering 15,625 shares of Common Stock at an exercise price of $3.05 per share, expiring on May 15, 2036.

After this grant, she directly holds 37,245 shares of Common Stock and a warrant linked to 3,334 underlying Common Stock shares with a $12.00 exercise price, expiring on August 28, 2028. The filing does not show any open‑market buys or sells, only holdings and this compensation-related option award.

Positive

  • None.

Negative

  • None.
Insider Barkal Susan Berish
Role null
Type Security Shares Price Value
Grant/Award Stock Option 15,625 $0.00 --
holding Warrant -- -- --
holding Common Stock -- -- --
Holdings After Transaction: Stock Option — 15,625 shares (Direct, null); Warrant — 3,334 shares (Direct, null); Common Stock — 37,245 shares (Direct, null)
Footnotes (1)
Common stock held 37,245 shares Direct ownership after reported transactions
New stock option grant 15,625 shares Option to acquire common stock granted on May 15, 2026
Stock option exercise price $3.05 per share Exercise price for 15,625-share option expiring May 15, 2036
Stock option expiration May 15, 2036 Expiry date of 15,625-share option award
Warrant underlying shares 3,334 shares Underlying Guerrilla RF common stock for existing warrant
Warrant exercise price $12.00 per share Exercise price on warrant expiring August 28, 2028
Stock Option financial
"security_title: "Stock Option""
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
"security_title: "Warrant""
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.
underlying security title financial
"underlying_security_title: "Common Stock""
derivative financial
"transaction_type: "derivative""
A derivative is a financial contract whose value depends on the price or performance of another asset or measure — for example a stock, index, interest rate, commodity, or currency. Investors use derivatives like insurance or leveraged bets to hedge risk, speculate, or gain exposure without owning the underlying asset; they can protect portfolios but also amplify losses and introduce counterparty and market risk.
SEC Form 4
FORM 4UNITED 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*
Barkal Susan Berish

(Last)(First)(Middle)
47 ROLLESTON DRIVE

(Street)
GREENVILLE SOUTH CAROLINA 29615

(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)
XDirector10% 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)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock37,245D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Warrant$1208/28/202308/28/2028Common Stock3,3343,334D
Stock Option$3.0505/15/2026A15,62505/15/202605/15/2036Common Stock15,625$015,625D
Explanation of Responses:
/s/ Iain MacSween, Attorney-in-Fact05/19/2026
** Signature of Reporting PersonDate
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)

FAQ

What insider transaction did Guerrilla RF (GUER) report for Susan Berish Barkal?

Guerrilla RF reported that director Susan Berish Barkal received a stock option grant for 15,625 shares. The option has an exercise price of $3.05 per share and represents a compensation-related award rather than an open-market stock purchase or sale.

How many Guerrilla RF (GUER) shares does Susan Berish Barkal hold after this Form 4?

After the reported transactions, Susan Berish Barkal directly holds 37,245 shares of Guerrilla RF common stock. This figure reflects her direct ownership position as disclosed in the Form 4 and provides context for the scale of the new option grant.

What are the key terms of Susan Berish Barkal’s new Guerrilla RF stock option?

The new stock option gives Susan Berish Barkal the right to acquire 15,625 Guerrilla RF common shares at $3.05 per share. The option becomes exercisable from May 15, 2026, and will expire on May 15, 2036, if not exercised before that date.

Does this Guerrilla RF (GUER) Form 4 show any insider share sales or purchases?

The Form 4 does not report any open-market purchases or sales of Guerrilla RF shares. It mainly records existing holdings and a new stock option grant classified as a grant, award, or other acquisition, rather than a discretionary market trade.