STOCK TITAN

Guerrilla RF (GUER) director adds GUER shares and receives 15,625 fully vested options

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

Rhea-AI Filing Summary

Guerrilla RF, Inc. director James E. Dunn Jr. received a grant of 15,625 stock options for common stock at an exercise price of $3.05 per share, which are fully vested and exercisable and expire on May 15, 2036. A revocable trust for his benefit also bought 3,335 shares of common stock at $3.00 per share, increasing its indirect holdings to 5,002 shares. Separately, he holds 48,329 shares of common stock directly and several option and warrant positions on additional shares at exercise prices ranging from $1.42 to $12.00.

Positive

  • None.

Negative

  • None.
Insider Dunn James E. Jr.
Role null
Bought 3,335 shs ($10K)
Type Security Shares Price Value
Grant/Award Stock Option 15,625 $0.00 --
Purchase Common Stock 3,335 $3.00 $10K
holding Stock Option -- -- --
holding Stock Option -- -- --
holding Stock Option -- -- --
holding Stock Option -- -- --
holding Stock Option -- -- --
holding Warrant -- -- --
holding Common Stock -- -- --
Holdings After Transaction: Stock Option — 15,625 shares (Direct, null); Common Stock — 5,002 shares (Indirect, By Trust); Warrant — 834 shares (Indirect, By Trust.); Common Stock — 48,329 shares (Direct, null)
Footnotes (1)
  1. Shares and warrants held of record by the James E. Dunn, Jr. Restated 1985 Revocable Trust, for the benefit of Reporting Person. The shares subject to the option are fully vested and exercisable.
Stock options granted 15,625 options Exercise price $3.05; expire May 15, 2036
Option exercise price $3.05 per share Newly granted options on Guerrilla RF common stock
Trust share purchase 3,335 shares Bought at $3.00 per share in open market
Indirect shares after purchase 5,002 shares Held by revocable trust for reporting person’s benefit
Direct common stock holdings 48,329 shares Directly held Guerrilla RF common stock
Indirect warrant position 834 underlying shares Warrant at $12.00 exercise price, expiring August 28, 2028
Existing option position 2,462 underlying shares Stock option at $1.42 exercise price, expiring October 26, 2026
Stock Option financial
"The shares subject to the option are fully vested and exercisable."
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.
open-market purchase financial
"Purchase in open market or private transaction"
An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.
Revocable Trust financial
"Restated 1985 Revocable Trust, for the benefit of Reporting Person."
A revocable trust is a legal arrangement where the person who creates it keeps control and can change or cancel the trust at any time, while naming who will manage and receive the assets later. Think of it like a flexible folder for your investments and property that can be relabeled or reworked as circumstances change; it matters to investors because it determines how ownership is recorded, how easily assets transfer on incapacity or death, and whether holdings bypass public probate proceedings.
Warrant financial
"Shares and warrants held of record by the James E. Dunn, Jr. Restated 1985 Revocable Trust"
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.
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*
Dunn James E. Jr.

(Last)(First)(Middle)
300 N. GREENE STREET
SUITE 2195

(Street)
GREENSBORO NORTH CAROLINA 27401

(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)
05/13/2026
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 Stock48,329D
Common Stock05/13/2026P3,335A$35,002IBy Trust(1)
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
Stock Option$2.9 (2)07/14/2025Common Stock2,9542,954D
Stock Option$1.42 (2)10/26/2026Common Stock2,4622,462D
Stock Option$1.93 (2)09/25/2028Common Stock2,4642,464D
Stock Option$2.2 (2)09/11/2029Common Stock1,2291,229D
Stock Option$3.19 (2)10/30/2030Common Stock2,4642,464D
Warrant$1208/28/202308/28/2028Common Stock834834IBy Trust.(1)
Stock Option$3.0505/15/2026A15,62505/15/202605/15/2036Common Stock15,625$015,625D
Explanation of Responses:
1. Shares and warrants held of record by the James E. Dunn, Jr. Restated 1985 Revocable Trust, for the benefit of Reporting Person.
2. The shares subject to the option are fully vested and exercisable.
/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 transactions did GUER director James E. Dunn Jr. report?

He reported a grant of 15,625 fully vested stock options at a $3.05 exercise price and an open-market purchase of 3,335 Guerrilla RF (GUER) common shares at $3.00 per share through a revocable trust benefiting him.

How many GUER stock options were granted to James E. Dunn Jr. and at what price?

He received 15,625 stock options for Guerrilla RF common stock with an exercise price of $3.05 per share. These options are fully vested, exercisable, and carry an expiration date of May 15, 2036 according to the reported Form 4 data.

What GUER share purchase did the trust associated with James E. Dunn Jr. make?

A revocable trust for his benefit purchased 3,335 Guerrilla RF common shares at $3.00 per share. Following this open-market transaction, the trust’s indirect holdings increased to 5,002 common shares, as reflected in the Form 4 filing details.

What are James E. Dunn Jr.’s reported direct GUER common stock holdings?

His direct holdings are reported as 48,329 shares of Guerrilla RF common stock. This figure is separate from the 5,002 shares held indirectly through a revocable trust and represents shares registered in his own name on the Form 4.

What derivative positions on GUER does James E. Dunn Jr. hold after these transactions?

He holds several stock options and a warrant on Guerrilla RF common stock, including options with exercise prices from $1.42 to $3.19 and a warrant at $12.00, covering underlying share amounts such as 2,464, 2,462, 2,954, and 834 shares, with expirations between 2025 and 2030.

Are the newly granted GUER stock options to James E. Dunn Jr. already vested?

Yes. The filing states that the 15,625 stock options granted to him are fully vested and exercisable. They therefore can be exercised at the $3.05 per-share price any time before their May 15, 2036 expiration date, subject to applicable plan terms.