Ryan Michael Pratt - 15 May 2026 Form 4 Insider Report for Guerrilla RF, Inc. (GUER)

Reporting relationship: Chief Executive Officer, Director
Issuer ticker: GUER
Reported as of: 15 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 19 May 2026, 10:35:09 UTC
Prior SEC filing: 13 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Iain MacSween, Attorney-in-Fact

Key filing fact

Ryan Michael Pratt filed Form 4 for Guerrilla RF, Inc. (GUER) on 19 May 2026.

Key facts

This page summarizes Ryan Michael Pratt's Form 4 filing for Guerrilla RF, Inc. (GUER).
1 reported transaction and 10 derivative rows are listed below.
Accepted by SEC: 19 May 2026, 10:35.

Change

Previous filing in this sequence was filed on 13 Feb 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001891781 Primary reporting owner

Pratt Ryan Michael

Relationship: Chief Executive Officer, Director
Address: 5686 GREEN DALE COURT, SUMMERFIELD
Signature: /s/ Iain MacSween, Attorney-in-Fact
Signature date: 19 May 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

GUER holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 1,017,741
Date: 15 May 2026
Ownership: Direct

GUER holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 2,802
Date: 15 May 2026
Ownership: Held by Spouse

GUER holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 63,022
Date: 15 May 2026
Ownership: By Trust
Footnotes: F1

GUER holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 63,022
Date: 15 May 2026
Ownership: By Trust
Footnotes: F2

GUER holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 63,022
Date: 15 May 2026
Ownership: By Trust
Footnotes: F3

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

GUER transaction Derivative

Stock Option

Award

Transaction value
Shares: +45,000
Change %
Price: $0.000000^*
Shares after: 45,000
Date: 15 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 45,000
Exercise price: $6.00
Footnotes: F11

GUER holding Derivative

Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 1,477
Date: 15 May 2026
Ownership: Held by Spouse
Underlying class: Common Stock
Underlying amount: 1,477
Exercise price: $1.42
Footnotes: F6

GUER holding Derivative

Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 640
Date: 15 May 2026
Ownership: Held by Spouse
Underlying class: Common Stock
Underlying amount: 640
Exercise price: $1.93
Footnotes: F6

GUER holding Derivative

Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 1,475
Date: 15 May 2026
Ownership: Held by Spouse
Underlying class: Common Stock
Underlying amount: 1,475
Exercise price: $2.20
Footnotes: F6

GUER holding Derivative

Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 1,330
Date: 15 May 2026
Ownership: Held by Spouse
Underlying class: Common stock
Underlying amount: 1,330
Exercise price: $3.19
Footnotes: F6

GUER holding Derivative

Restricted Stock Unit

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 834
Date: 15 May 2026
Ownership: Held by Spouse
Underlying class: Common Stock
Underlying amount: 834
Exercise price
Footnotes: F4, F5, F7

GUER holding Derivative

Restricted Stock Unit

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 11,793
Date: 15 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 11,793
Exercise price
Footnotes: F4, F5, F8

GUER holding Derivative

Warrant

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 33,822
Date: 15 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 33,822
Exercise price: $2.50

GUER holding Derivative

Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 50,000
Date: 15 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 50,000
Exercise price: $3.05
Footnotes: F9

GUER holding Derivative

Stock Option

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 330
Date: 15 May 2026
Ownership: Held by Spouse
Underlying class: Common Stock
Underlying amount: 330
Exercise price: $3.05
Footnotes: F10

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 11 footnotes

Footnote F1

Shares held of record by the 2021 Irrevocable Trust for Patrick Joseph Pratt u/a dated June 7, 2021, for the benefit of Reporting Person's child. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities on this report shall not be deemed an admission that the Reporting Person is the beneficial owner of the reported securities for purposes of Section 16 of the Exchange Act or for any other purpose.

Footnote F2

Shares held of record by the 2021 Irrevocable Trust for Rachel Katherin Pratt u/a dated June 7, 2021, for the benefit of Reporting Person's child. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities on this report shall not be deemed an admission that the Reporting Person is the beneficial owner of the reported securities for purposes of Section 16 of the Exchange Act or for any other purpose.

Footnote F3

Shares held of record by the 2021 Irrevocable Trust for Nikolas Ryan Pratt u/a dated June 7, 2021, for the benefit of Reporting Person's child. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities on this report shall not be deemed an admission that the Reporting Person is the beneficial owner of the reported securities for purposes of Section 16 of the Exchange Act or for any other purpose.

Footnote F4

Each restricted stock unit represents a contingent right to receive one share of common stock upon vesting of the unit.

Footnote F5

No expiration date.

Footnote F6

The options are fully vested and exercisable.

Footnote F7

The restricted stock units vest on 8/21/2026, subject to the Reporting Person's continued service through the applicable vesting date.

Footnote F8

The restricted stock units vest on 1/1/2027, subject to the Reporting Person's continued service through the applicable vesting date.

Footnote F9

The options vest as follows: (i) 12,500 options on 5/21/2026; (ii) 1,041 options on 6/21/26, and monthly thereafter through 4/21/2029; and (iii) 1,065 options on 5/21/2029, in each case subject to the Reporting Person's continued service through the applicable vesting date.

Footnote F10

The options vest as follows: (i) 82 options on 5/21/2026; (ii) 6 options on 6/21/26, and monthly thereafter through 4/21/29; and (iii) 38 options on 5/21/2029, in each case subject to the Reporting Person's continued service through the applicable vesting date.

Footnote F11

The options vest as follows: (i) 11,250 options on 5/15/2027; (ii) 2,812 options on 8/15/2027, and quarterly thereafter through 2/15/2030; and (iii) 2,818 options on 5/15/2030, in each case subject to the Reporting Person's continued service through the applicable vesting date.