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GUER Guerrilla RF, Inc. Insider Trading

Latest: Director Bought $10K of Shares · May 2026

Guerrilla RF, Inc. (GUER)'s reported leadership includes COO Mark Mason. Its Form 4 history breaks down as 3 buys and 0 sells, filed by 2 distinct insiders through May 2026. Its highest-significance filing in the last 90 days: Director Dunn James E. Jr. bought $10K, transaction dated May 2026.

3 filings analyzed · Latest 2026-05-19

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Buys
3
Sells
0
Insiders
2
Direction
Net buying

Guerrilla RF, Inc. leadership

COO
Mark Mason — Chief Operating Officer
Chair
Ryan Pratt — Chief Executive Officer and Chairman
High conviction

This is a high-conviction signal — the insider is a first-time or occasional buyer, historically the strongest subset. Such buys have outperformed the S&P 500 by a median ~3% over the 30 days after the trade (n ≈ 3,001, 2024-2026). Past results don't predict the future. How we measure this ↗

May 2026
2026-05-19
high
3,335 shares
$10,005
@ $3.00
Significance 7

Director Dunn purchases 3,335 shares at $3.00, doubling holdings to 5.0K; stock at $2.92 post 39.0% 30-day rally.

Director James E. Dunn Jr. purchased 3,335 shares at $3.00 on 2026-05-13, expanding his holdings from 1,667 to 5,002 shares (+200.1%). The purchase occurred during a period of stock momentum: the stock has gained 39.0% over 30 days and 47.4% over 90 days, though it remains 58.3% below its 52-week high of $7.00. His prior two purchases at GUER in 2024 both yielded positive 90-day returns (41.2% and 27.5%), establishing a pattern of buy timing at this ticker. The company reported net income of $1.1M in the latest quarter, though full-year results were unprofitable, with annual revenue growth of 13.0% and a market cap of $31.1M. The transaction signals a significant capital commitment at current valuation levels in a micro-cap company with emerging profitability.

December 2024
2024-12-11
medium
9,100 shares
$9,990
@ $1.10
Significance 4

Director Dunn James E. Jr. buys 9,100 shares of GUER at $1.10; stock down -71.4% from 52-week high, company unprofitable with $-7.2M net income.

Director Dunn purchased 9,100 shares at $1.10 on 2024-11-26, expanding his holdings by 47.3% from 19,230 to 28,330 shares. The purchase occurred after a substantial decline: GUER trades at $1.30 currently, down 71.4% from its 52-week high of $4.55 and down 35.0% over the prior 30 days. Dunn's cross-ticker track record shows mixed timing: his one prior buy at this same ticker (on 2024-05-29) generated 30-day and 90-day returns of -25.0% and +25.0%, respectively. GUER faces material headwinds—the company reported quarterly revenue of $4.5M against a net loss of $-7.2M, and remains unprofitable on a full-year basis despite 30.0% annual revenue growth. This purchase in a distressed micro-cap with negative earnings and recent sharp price deterioration deserves scrutiny regarding execution risk and balance-sheet sustainability.

August 2024
2024-08-28
low
216 shares
$810
@ $3.75
Significance 2

Director William J. Pratt bought 216 GUER shares at $3.75; stock now $3.50 amid 0-for-5 poor timing record at this ticker.

Director William J. Pratt purchased 216 shares of Guerrilla RF at $3.75 on 2024-08-27, increasing his holdings by 18.5% to 1,382 shares. This marks his sixth documented open-market purchase of GUER over approximately 16 months (May 2024, March 2024, and three May 2023 transactions). However, all five prior same-ticker buys show negative returns at the 90-day mark: -29.4%, -44.0%, -37.1%, -36.7%, and -45.8%, reflecting a 0% success rate in timing entries. The company generated $6.1M in quarterly revenue with negative $1.8M net income, and though it achieved 30% annual revenue growth, it remains unprofitable on a full-year basis. The current price of $3.50 is 23.1% below the 52-week high and has appreciated 40% over the past 90 days, yet the director's consistent pattern of value destruction at this ticker—despite recurring accumulation—suggests a pattern worth tracking for future price action.

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