Guerrilla RF (GUER)
Guerrilla RF on one page: short interest, fails to deliver, large holders, earnings dates and insider trades. Listed on OTC.
5K
Short interest
settlement 2026-10-15
1.0
Days to cover
unchanged vs prior
5,148
Fails to deliver
settlement 2026-05-15
Thu 25 Mar
Next earnings
estimated date
$0
Insider flow, 90 days
0 buys, 0 sells
As of 2026-10-15.
Short interest
FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSONAs of 15 October 2026, short interest in GUER is 4,638 shares, down 3,414 shares over the last month. Over the last 48 readings it ranged from 36 shares (31 October 2024) to 8,052 shares (15 September 2026). At the reported average volume of 6K shares a day that is 1.0 days to cover.
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| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 4,638 | -23.9% | 5,664 | 1.00 |
| 2026-09-30 | 6,095 | -24.3% | 9,130 | 1.00 |
| 2026-09-15 | 8,052 | +77.3% | 28,419 | 1.00 |
| 2026-08-31 | 4,541 | +21.1% | 18,549 | 1.00 |
| 2026-08-14 | 3,750 | +1537.5% | 36,362 | 1.00 |
| 2026-07-31 | 229 | -86.1% | 7,503 | 1.00 |
| 2026-07-15 | 1,646 | +100.0% | 4,175 | 1.00 |
| 2026-06-15 | 1,610 | -16.5% | 16,134 | 1.00 |
| 2026-05-29 | 1,928 | +3009.7% | 10,405 | 1.00 |
| 2026-05-15 | 62 | -94.3% | 10,948 | 1.00 |
| 2026-04-30 | 1,078 | -71.1% | 6,223 | 1.00 |
| 2026-04-15 | 3,734 | -3.9% | 604 | 6.18 |
| 2026-03-31 | 3,885 | +1019.6% | 1,734 | 2.24 |
| 2026-03-13 | 347 | -65.8% | 5,124 | 1.00 |
| 2026-02-27 | 1,013 | +236.5% | 1,718 | 1.00 |
| 2026-02-13 | 301 | -74.6% | 2,916 | 1.00 |
| 2026-01-30 | 1,187 | -42.8% | 3,195 | 1.00 |
| 2026-01-15 | 2,074 | +103.5% | 2,568 | 1.00 |
| 2025-12-31 | 1,019 | +995.7% | 1,647 | 1.00 |
| 2025-12-15 | 93 | -65.2% | 3,899 | 1.00 |
| 2025-11-28 | 267 | -83.7% | 14,139 | 1.00 |
| 2025-11-14 | 1,642 | +802.2% | 21,681 | 1.00 |
| 2025-10-31 | 182 | -77.0% | 1,641 | 1.00 |
| 2025-10-15 | 791 | -69.1% | 3,606 | 1.00 |
| 2025-09-30 | 2,562 | +12.6% | 1,756 | 1.46 |
| 2025-09-15 | 2,276 | +2270.8% | 3,342 | 1.00 |
| 2025-08-29 | 96 | -85.4% | 48,035 | 1.00 |
| 2025-08-15 | 658 | +100.0% | 27,362 | 1.00 |
| 2025-07-15 | 1,382 | -46.1% | 3,386 | 1.00 |
| 2025-06-30 | 2,563 | +11.3% | 1,445 | 1.77 |
| 2025-06-13 | 2,303 | +461.7% | 1,557 | 1.48 |
| 2025-05-30 | 410 | +632.1% | 1,995 | 1.00 |
| 2025-05-15 | 56 | +0.0% | 8,256 | 1.00 |
| 2025-04-30 | 56 | -97.9% | 3,599 | 1.00 |
| 2025-04-15 | 2,682 | +384.1% | 14,898 | 1.00 |
| 2025-03-31 | 554 | +714.7% | 1,847 | 1.00 |
| 2025-03-14 | 68 | -72.9% | 2,301 | 1.00 |
| 2025-02-28 | 251 | +66.2% | 2,252 | 1.00 |
| 2025-02-14 | 151 | +287.2% | 9,085 | 1.00 |
| 2025-01-31 | 39 | -72.3% | 9,112 | 1.00 |
| 2025-01-15 | 141 | -84.7% | 17,470 | 1.00 |
| 2024-12-31 | 924 | +938.2% | 13,595 | 1.00 |
| 2024-12-13 | 89 | -90.1% | 7,907 | 1.00 |
| 2024-11-29 | 897 | -41.9% | 69,330 | 1.00 |
| 2024-11-15 | 1,545 | +4191.7% | 11,990 | 1.00 |
| 2024-10-31 | 36 | +100.0% | 1,677 | 1.00 |
| 2024-06-28 | 44 | -94.4% | 3,688 | 1.00 |
| 2024-06-14 | 787 | +147.5% | 2,935 | 1.00 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 15 May 2026, the fails-to-deliver balance in GUER is 5,148 shares, up 5,048 shares over the last settlement date. Over the last 30 readings it ranged from 6 shares (18 August 2025) to 49,330 shares (8 April 2025).
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-05-15 | 5,148 | $2.45 | $13K |
| 2025-12-05 | 100 | $2.30 | $230 |
| 2025-10-17 | 38 | $1.17 | $44 |
| 2025-09-19 | 346 | $1.11 | $384 |
| 2025-09-18 | 346 | $1.15 | $398 |
| 2025-08-19 | 176 | $1.05 | $185 |
| 2025-08-18 | 6 | $1.00 | $6 |
| 2025-08-05 | 98 | $1.20 | $118 |
| 2025-07-28 | 90 | $1.02 | $92 |
| 2025-07-25 | 90 | $0.94 | $85 |
| 2025-07-16 | 406 | $1.00 | $406 |
| 2025-04-08 | 49,330 | $1.00 | $49K |
| 2025-04-07 | 47,406 | $1.00 | $47K |
| 2025-03-28 | 384 | $1.65 | $634 |
| 2025-03-27 | 62 | $1.74 | $108 |
| 2025-02-11 | 622 | $1.04 | $647 |
| 2025-01-24 | 178 | $1.39 | $247 |
| 2024-12-30 | 730 | $1.68 | $1K |
| 2024-12-27 | 730 | $1.55 | $1K |
| 2024-12-26 | 730 | $1.55 | $1K |
| 2024-12-24 | 2,130 | $1.45 | $3K |
| 2024-12-12 | 215 | $1.30 | $280 |
| 2024-11-12 | 1,091 | $2.00 | $2K |
| 2024-11-07 | 8 | $2.40 | $19 |
| 2024-10-29 | 25 | $2.25 | $56 |
| 2024-10-28 | 364 | $2.25 | $819 |
| 2024-10-25 | 389 | $2.29 | $891 |
| 2024-10-15 | 253 | $2.38 | $602 |
| 2024-08-23 | 219 | $2.85 | $624 |
| 2024-08-22 | 119 | $2.59 | $308 |
Insider trades
SEC Form 4, newest first. JSONNo open-market insider trades were reported for GUER in the last 90 days. The most recent filings are listed below. Latest filing: HAMMER TODD B (Director, 10% owner) on 2026-08-28.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-08-28 | HAMMER TODD B | Director, 10% owner | Exercise or conversion | 14K | $6.00 | $85K | 46K |
| 2026-08-28 | ELLIS THOMAS B | Director, 10% owner | Exercise or conversion | 14K | $6.00 | $85K | 46K |
| 2026-08-26 | Pratt Ryan Michael | Chief Executive Officer | Exercise or conversion | 1K | $1.42 | $2K | 5K |
| 2026-06-18 | ELLIS THOMAS B | Director,TenPercentOwner | Exercise or conversion | 16K | $3.05 | $48K | 32K |
| 2026-06-18 | HAMMER TODD B | Director,TenPercentOwner | Exercise or conversion | 16K | $3.05 | $48K | 32K |
| 2026-06-11 | Dunn James E. Jr. | Director | Exercise or conversion | 2K | $1.42 | $3K | 51K |
| 2026-06-11 | Dunn James E. Jr. | Director | Exercise or conversion | 2K | $1.93 | $5K | 53K |
| 2026-06-11 | Dunn James E. Jr. | Director | Exercise or conversion | 1K | $2.20 | $3K | 54K |
| 2026-05-13 | John-Williams Michael | Chief Financial Officer | Buy | 2K | $2.82 | $6K | 10K |
| 2026-05-13 | Dunn James E. Jr. | Director | Buy | 3K | $3.00 | $10K | 5K |
| 2024-11-26 | Dunn James E. Jr. | Director | Buy | 9K | $1.10 | $10K | 28K |
| 2024-08-27 | PRATT WILLIAM J | Director | Buy | 216 | $3.75 | $810 | 1K |
| 2024-05-29 | Dunn James E. Jr. | Director | Buy | 2K | $3.00 | $5K | 19K |
| 2024-05-28 | Pratt Ryan Michael | Chief Executive Officer | Buy | 100 | $4.25 | $425 | 949K |
| 2024-05-24 | Pratt Ryan Michael | Chief Executive Officer | Buy | 901 | $3.52 | $3K | 949K |
| 2024-05-23 | Pratt Ryan Michael | Chief Executive Officer | Buy | 59 | $4.25 | $251 | 791 |
| 2024-05-20 | PRATT WILLIAM J | Director | Buy | 200 | $4.25 | $850 | 1K |
| 2024-03-28 | PRATT WILLIAM J | Director | Buy | 21K | price not stated in the filing | not stated | 125K |
| 2024-03-28 | Pratt Ryan Michael | Chief Executive Officer | Buy | 34K | $2.50 | $85K | 948K |
| 2024-03-28 | SALEM INVESTMENT PARTNERS V, LIMITED PARTNERSHIP | TenPercentOwner | Buy | 262K | price not stated in the filing | not stated | 695K |
| 2024-03-28 | Bodford Alvin M. | TenPercentOwner,Other | Discretionary trade | 40K | price not stated in the filing | not stated | 1.9M |
| 2023-09-05 | Bodford Alvin M. | TenPercentOwner,Other | Discretionary trade | 311K | price not stated in the filing | not stated | 1.8M |
| 2023-08-17 | Bodford Alvin M. | TenPercentOwner,Other | Discretionary trade | 189K | price not stated in the filing | not stated | 1.5M |
| 2023-05-30 | Mason Mark Alan | Chief Operating Officer | Buy | 225 | $4.52 | $1K | 225 |
| 2023-05-25 | Pratt Ryan Michael | Chief Executive Officer | Buy | 43 | $4.99 | $215 | 43 |
| 2023-05-18 | SUMMERELL VIRGINIA R | Director | Buy | 200 | $6.20 | $1K | 200 |
| 2023-05-18 | PRATT WILLIAM J | Director | Buy | 100 | $6.95 | $695 | 383 |
| 2023-05-18 | PRATT WILLIAM J | Director | Buy | 200 | $7.00 | $1K | 583 |
| 2023-05-18 | SUMMERELL VIRGINIA R | Director | Buy | 200 | $7.00 | $1K | 400 |
| 2023-05-15 | PRATT WILLIAM J | Director | Buy | 200 | $7.75 | $2K | 283 |
| 2023-01-20 | Barkal Susan Berish | Director | Buy | 40K | $1.30 | $52K | 40K |
| 2022-12-30 | Berg John Alen | Chief Financial Officer | Buy | 20K | $1.30 | $26K | 164K |
| 2022-12-30 | Dunn James E. Jr. | Director | Buy | 10K | $1.30 | $13K | 10K |
| 2022-08-17 | PRATT WILLIAM J | Director | Buy | 500 | $4.00 | $2K | 500 |
| 2022-08-17 | PRATT WILLIAM J | Director | Buy | 200 | $4.00 | $800 | 600K |
| 2022-01-01 | Unknown | Director | Grant | 13K | $2.00 | $25K | 13K |
| 2022-01-01 | THOMPSON GREGORY J | Director | Grant | 13K | $2.00 | $25K | 233K |
| 2022-01-01 | Unknown | Director | Grant | 13K | $2.00 | $25K | 42K |
| 2022-01-01 | Funchess Samuel William Sr. | Director | Grant | 13K | $2.00 | $25K | 71K |
| 2022-01-01 | Unknown | Director | Grant | 13K | $2.00 | $25K | 600K |
| 2021-11-12 | Tompkins Mark N. | Other | Buy | 250K | $2.00 | $500K | 2.7M |
| 2021-10-22 | Tompkins Mark N. | Other | Other transaction | 2.0M | $0.00 | $0 | 2.5M |
| 2021-10-21 | Tompkins Mark N. | Other | Other transaction | 275K | $0.00 | $0 | 4.5M |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON4 holders report 5% or more of GUER in their latest filing, all on Schedule 13G (passive). The largest reported stake is Lytton, Laurence W. at 10.0% of the class (1,096,690 shares), filed 2026-08-13 for an event on 2026-06-30.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-08-13 | 13G/Ano. 2 | Bleichroeder LPinvestment adviser | 715K | 6.5% | 2026-06-30 |
| 2026-08-13 | 13G/Ano. 2 | Bleichroeder Holdings LLCparent holding company | 715K | 6.5% | 2026-06-30 |
| 2026-08-13 | 13G/Ano. 2 | Andrew Gundlachparent holding company | 715K | 6.5% | 2026-06-30 |
| 2026-08-13 | 13G/Ano. 1 | Lytton, Laurence W.individual | 1.1M | 10.0% | 2026-06-30 |
What this page is
Guerrilla RF in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.
This page follows Guerrilla RF (GUER), SEC CIK 1832487, listed on OTC. The cross-market tables live on the short interest and insider transactions hubs.
Source and updates
- Short interest
- FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-10-15.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-05-15.JSON and CSV
- Large holders
- SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-08-13.JSON and CSV
- Earnings dates
- SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-11-02.JSON and CSV
- Insider trades
- SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-08-28.JSON and CSV
- Company record
- EDGAR filing index for CIK 1832487Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 10 requests a minute without a key, 30 with a free key from a free account.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
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Datasets
Frequently Asked Questions
How much of GUER is sold short?
What is GUER's daily short volume?
Does GUER have fails to deliver?
Are GUER insiders buying or selling?
Who owns 5% or more of GUER?
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.