STOCK TITAN

Guerrilla RF (GUER) COO receives 27,500 stock options in new equity award

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

Rhea-AI Filing Summary

Guerrilla RF, Inc.'s Chief Operating Officer Mark Alan Mason reported his equity holdings and a new stock option award. He received a grant of 27,500 stock options for common stock at an exercise price of $6.0000 per share, expiring on May 15, 2036, as a compensation-related award.

Following this award, he holds 31,110 shares of common stock directly, along with multiple derivative positions. These include a warrant for 834 underlying common shares at $2.5000 per share expiring in 2028, several option grants over 1,774 to 25,000 underlying shares with exercise prices between $2.2000 and $3.1900 expiring between 2029 and 2035, and 5,897 restricted stock units, each representing one share.

Footnotes explain that the restricted stock units vest on January 1, 2027, and that related option grants vest in tranches between 2026 and 2030, in each case subject to Mason’s continued service with the company.

Positive

  • None.

Negative

  • None.
Insider Mason Mark Alan
Role Chief Operating Officer
Type Security Shares Price Value
Grant/Award Stock Option 27,500 $0.00 --
holding Stock Option -- -- --
holding Stock Option -- -- --
holding Restricted Stock Unit -- -- --
holding Stock Option -- -- --
holding Warrant -- -- --
holding Common Stock -- -- --
Holdings After Transaction: Stock Option — 27,500 shares (Direct, null); Restricted Stock Unit — 5,897 shares (Direct, null); Warrant — 834 shares (Direct, null); Common Stock — 31,110 shares (Direct, null)
Footnotes (1)
  1. Each restricted stock unit represents the contingent right to receive one share of common stock upon vesting of the unit. The shares subject to the option are fully vested and exercisable. No expiration date. The restricted stock units vest on 1/1/2027, subject to the Reporting Person's continued service through the applicable vesting date The options vest as follows: (i) 6,250 options on 5/21/2026; (ii) 520 options on 6/21/26, and monthly thereafter through 4/21/29; and (iii) 550 options on 5/21/2029, in each case subject to the Reporting Person's continued service through the applicable vesting date. The options vest as follows: (i) 6,875 options on 5/15/2027; (ii) 1,718 options on 8/15/2027, and quarterly thereafter through 2/15/2030; and (iii) 1,727 options on 5/15/2030, in each case subject to the Reporting Person's continued service through the applicable vesting date.
New stock option grant 27,500 options at $6.0000/share Exercise price; expires May 15, 2036
Direct common stock holdings 31,110 shares Common Stock following reported transactions
Warrant position 834 underlying shares at $2.5000 Warrant to buy common stock; expires August 28, 2028
Stock options at $3.0500 25,000 underlying shares Stock option grant; expires November 17, 2035
Stock options at $3.1900 1,774 underlying shares Stock option grant; expires October 30, 2030
Stock options at $2.2000 24,590 underlying shares Stock option grant; expires September 11, 2029
Restricted stock units 5,897 RSUs Each RSU equals one common share; vests January 1, 2027
Restricted Stock Unit financial
"Each restricted stock unit represents the contingent right to receive one share of common stock upon vesting"
A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.
Stock Option financial
"The options vest as follows: (i) 6,875 options on 5/15/2027; (ii) 1,718 options on 8/15/2027"
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.
Grant, award, or other acquisition financial
"transaction_code_description: Grant, award, or other acquisition"
exercise price financial
"exercisePrice: 2.5000 for the warrant and 6.0000 for the new stock options"
The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.
warrant financial
"Warrant with underlying common stock shares and a stated exercise price and expiration date"
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.
vesting financial
"The restricted stock units vest on 1/1/2027, subject to the Reporting Person's continued service"
Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.
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*
Mason Mark Alan

(Last)(First)(Middle)
682 INVERNESS DRIVE

(Street)
WINSTON-SALEM NORTH CAROLINA 27107

(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)
Director10% Owner
XOfficer (give title below)Other (specify below)
Chief Operating Officer
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 Stock31,110D
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$2.2 (2)09/11/2029Common Stock24,59024,590D
Stock Option$3.19 (2)10/30/2030Common Stock1,7741,774D
Restricted Stock Unit(1) (4) (3)Common Stock5,8975,897D
Stock Option$3.05 (5)11/17/2035Common Stock25,00025,000D
Stock Option$605/15/2026A27,500 (6)05/15/2036Common Stock27,500$027,500D
Warrant$2.508/28/202308/28/2028Common Stock834834D
Explanation of Responses:
1. Each restricted stock unit represents the contingent right to receive one share of common stock upon vesting of the unit.
2. The shares subject to the option are fully vested and exercisable.
3. No expiration date.
4. The restricted stock units vest on 1/1/2027, subject to the Reporting Person's continued service through the applicable vesting date
5. The options vest as follows: (i) 6,250 options on 5/21/2026; (ii) 520 options on 6/21/26, and monthly thereafter through 4/21/29; and (iii) 550 options on 5/21/2029, in each case subject to the Reporting Person's continued service through the applicable vesting date.
6. The options vest as follows: (i) 6,875 options on 5/15/2027; (ii) 1,718 options on 8/15/2027, and quarterly thereafter through 2/15/2030; and (iii) 1,727 options on 5/15/2030, in each case subject to the Reporting Person's continued service through the applicable vesting date.
/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 did Guerrilla RF (GUER) COO Mark Alan Mason report in this Form 4?

He reported a new stock option award and his updated equity holdings. The filing shows a grant of 27,500 stock options at $6.0000 per share and details his existing common stock, warrants, options, and restricted stock units in Guerrilla RF, Inc.

How many Guerrilla RF (GUER) stock options were granted to the COO and at what price?

Mark Alan Mason received 27,500 stock options for Guerrilla RF common stock at an exercise price of $6.0000 per share. These options are compensation-related, do not involve a cash purchase now, and allow future share acquisition at that fixed price before expiration.

When do the newly reported Guerrilla RF (GUER) stock options and RSUs vest or expire?

The new 27,500 stock options expire on May 15, 2036 and vest in tranches between 2027 and 2030. The 5,897 restricted stock units vest on January 1, 2027, in each case conditioned on Mason’s continued service with Guerrilla RF.

How many Guerrilla RF (GUER) common shares does the COO hold after these transactions?

After the reported award, Mark Alan Mason holds 31,110 shares of Guerrilla RF common stock directly. In addition, he has derivative interests through warrants, stock options, and restricted stock units that are tied to further underlying Guerrilla RF common shares, subject to vesting and exercise.

What other derivative securities linked to Guerrilla RF (GUER) stock does the COO hold?

He holds a warrant over 834 underlying common shares at $2.5000 expiring in 2028, stock options over 25,000 shares at $3.0500, 1,774 shares at $3.1900, and 24,590 shares at $2.2000, plus 5,897 restricted stock units, each convertible into one common share.

Are the Guerrilla RF (GUER) equity changes for the COO open-market buys or compensation awards?

The Form 4 characterizes the 27,500 stock options as a grant, award, or other acquisition, not an open-market purchase. These options are part of his compensation package and become exercisable over time, subject to continued service with Guerrilla RF, Inc.