STOCK TITAN

Guerrilla RF (GUER) insider granted options tied to 10M+ indirect shares

(Neutral)
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Guerrilla RF, Inc. (GUER) reported that director and 10% owner Todd B. Hammer received a grant of stock options for 14,164 shares of common stock at an exercise price of 6.0000 per share, expiring on 2036-08-14. The option is immediately exercisable but is subject to a right of repurchase by Guerrilla RF for shares issued upon early exercise before vesting, and it vests on the earlier of the first anniversary of the grant date or the company’s next annual stockholders’ meeting, currently expected to be June 9, 2027, contingent on continued service. Hammer now directly holds these 14,164 options and 32,292 shares of common stock, and is also reported as having indirect economic interests in 7,213,115 underlying common shares through Series A Convertible Preferred Stock and 2,885,246 underlying common shares through common stock purchase warrants held by NR-PRL Partners, LP, while disclaiming beneficial ownership beyond his pecuniary interest.

Positive

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Negative

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Insider HAMMER TODD B
Role Director, 10% Owner
Type Security Shares Price Value
Grant/Award Stock Option F4 14,164 $0.00 $0.00
holding Series A Convertible Preferred Stock F1, F2, F3 -- -- --
holding Common Stock Purchase Warrants F2, F3 -- -- --
holding Common Stock -- -- --
Holdings After Transaction: Stock Option — 14,164 shares (Direct); Series A Convertible Preferred Stock — 7,213,115 shares (Indirect, See Footnotes.); Common Stock Purchase Warrants — 2,885,246 shares (Indirect, See Footnotes.); Common Stock — 32,292 shares (Direct)
Footnotes (4)
  1. F1. The securities do not have any expiration date.
  2. F2. The reported securities are directly held by NR-PRL Partners, LP, and may be deemed to be indirectly beneficially owned by NR-PRL Partners GP, LLC as the general partner of NR-PRL Partners, LP. The securities may also be deemed to be indirectly beneficially owned by the Reporting Person as a member of NR-PRL Partners GP, LLC.
  3. F3. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission of beneficial ownership of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.
  4. F4. The option is immediately exercisable, subject to a right of repurchase in favor of the Issuer with respect to shares issued to the Reporting Person upon exercise of the option prior to vesting. The option vests on the earlier of (i) the first anniversary of the grant date and (ii) the date of the Issuer's next annual meeting of stockholders (currently expected to be June 9, 2027), subject to the Reporting Person's continued service through such vesting date.
Stock options granted 14,164 shares Stock Option grant to Todd B. Hammer on 2026-08-14
Option exercise price 6.0000 per share Conversion or exercise price of newly granted stock option
Option expiration date 2036-08-14 Expiration date of the 14,164-share stock option
Direct common stock holdings 32,292 shares Total Guerrilla RF common stock held directly after transactions
Series A Preferred underlying shares 7,213,115 shares Common shares underlying Series A Convertible Preferred Stock held indirectly
Series A conversion price 327.8700 Conversion price per underlying common share for Series A Convertible Preferred Stock
Warrants underlying shares 2,885,246 shares Common shares underlying Common Stock Purchase Warrants held indirectly
Warrant exercise price 3.0500 Exercise price per share for Common Stock Purchase Warrants expiring 2030-02-05
Series A Convertible Preferred Stock financial
"security_title": "Series A Convertible Preferred Stock""
Series A convertible preferred stock is a class of shares sold in an early funding round that gives investors a mix of protection and upside: it pays a priority claim over common shares if the company is sold or closes, but can be converted into ordinary shares to share in future growth. Think of it like a hybrid between a safer stake and a ticket to ownership; it matters to investors because it affects who controls the company, how future gains are split, and how much their investment is protected from downside.
Common Stock Purchase Warrants financial
"security_title": "Common Stock Purchase Warrants""
Common stock purchase warrants are tradable instruments that give the holder the right to buy a company’s common shares at a set price before a specified date, like a coupon that lets you purchase stock later at a fixed rate. They matter to investors because they offer a way to gain future upside if the stock rises, but when exercised they increase the number of shares outstanding and can reduce existing shareholders’ ownership and earnings per share.
right of repurchase financial
"subject to a right of repurchase in favor of the Issuer"
pecuniary interest financial
"except to the extent of his pecuniary interest therein"
beneficial ownership financial
"disclaims beneficial ownership of these securities"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

FAQ

What did insider Todd B. Hammer report in this Form 4 for GUER?

Todd B. Hammer reported a grant of 14,164 stock options for Guerrilla RF common stock at an exercise price of 6.0000 per share. The filing also lists his direct common stock holdings and significant indirect derivative positions.

What are the terms and vesting conditions of the new GUER stock options?

The option for 14,164 shares at 6.0000 per share is immediately exercisable but subject to a right of repurchase by Guerrilla RF until vested. It vests on the earlier of one year after grant or the next annual stockholders’ meeting, expected June 9, 2027.

How many Guerrilla RF (GUER) common shares does Todd B. Hammer hold directly after this filing?

After the reported transactions, Todd B. Hammer directly holds 32,292 shares of Guerrilla RF common stock, in addition to 14,164 options on common stock. The filing separates these direct holdings from his indirect economic interests.

What indirect derivative positions in GUER are associated with Todd B. Hammer?

The filing shows indirect interests in 7,213,115 underlying common shares via Series A Convertible Preferred Stock and 2,885,246 underlying common shares via common stock purchase warrants. These securities are held by NR-PRL Partners, LP, and Hammer disclaims beneficial ownership beyond his pecuniary interest.

When do the reported GUER derivative securities expire?

The stock options for 14,164 shares expire on 2036-08-14. The common stock purchase warrants on 2,885,246 underlying shares expire on 2030-02-05, while the Series A Convertible Preferred Stock has no expiration date according to the disclosure.

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

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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*
HAMMER TODD B

(Last)(First)(Middle)
867 BOYLSTON STREET
5TH FLOOR #1361

(Street)
BOSTON MASSACHUSETTS 02116

(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)
XDirectorX10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/14/2026
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 Stock32,292D
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
Series A Convertible Preferred Stock$327.8708/05/2024 (1)Common Stock7,213,1157,213,115I(2)See Footnotes.(2)(3)
Common Stock Purchase Warrants$3.0508/05/202402/05/2030Common Stock2,885,2462,885,246I(2)See Footnotes.(2)(3)
Stock Option$608/14/2026A14,164 (4)08/14/2036Common Stock14,164$014,164D
Explanation of Responses:
1. The securities do not have any expiration date.
2. The reported securities are directly held by NR-PRL Partners, LP, and may be deemed to be indirectly beneficially owned by NR-PRL Partners GP, LLC as the general partner of NR-PRL Partners, LP. The securities may also be deemed to be indirectly beneficially owned by the Reporting Person as a member of NR-PRL Partners GP, LLC.
3. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission of beneficial ownership of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.
4. The option is immediately exercisable, subject to a right of repurchase in favor of the Issuer with respect to shares issued to the Reporting Person upon exercise of the option prior to vesting. The option vests on the earlier of (i) the first anniversary of the grant date and (ii) the date of the Issuer's next annual meeting of stockholders (currently expected to be June 9, 2027), subject to the Reporting Person's continued service through such vesting date.
/s/ Charnice Suggs, Attorney-in-Fact08/18/2026
** 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)