| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
President & CFO | Director | President and CFO +1 more
2 companies
David R. Horn is President & CFO at SEER, with reported holdings spanning 2 companies. David R. Horn's net worth is not public. Form 4 filings only show shares in the companies where this person is an insider; those holdings are worth an estimated $883K at current prices.
Our model assigns David R. Horn a strong insider score of 80/100, based on 21 past trades. Over a 12-month horizon, 88.9% of those trades were profitable, with an average 12-month return of +49.2%.
David R. Horn's largest disclosed position is in SEER as President & CFO, worth about $842K. The SEER filings lean toward selling, a net 184,667 shares.
David R. Horn has 30 Form 4 filings on record from July 2017 to August 2026, across 2 companies: President & CFO at Seer (SEER), 2017–2026; Director at Edap Tms (FOCL), 2026.
The 67 reported transactions were 28 open-market sales, 15 option or other derivative awards, 8 dispositions back to the company and 7 stock awards, plus smaller numbers of other types.
Counted by filing, the open-market trades come to 1 purchase worth about $48K and 22 sales worth about $3.0M.
The only open-market purchase was 10,000 shares of FOCL at an average $4.75 on August 14, 2026, about $48K.
The largest open-market sale was 26,273 shares of SEER at an average $20.26 on December 6, 2021, about $532K. Twelve months later SEER was down 70%.
None of the 9 sales since April 2023 was marked as made under a Rule 10b5-1 trading plan.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Aug 18, 2026 | SEER Seer, Inc. | President & CFO | Sell | 7,309 | $2.03 | $14,809.50 | -1.5% | - | - | |
| Aug 14, 2026 | FOCL Edap Tms S.A. | Director | Buy | 10,000 | $4.75 | $47,500.00 | New | - | - | |
| May 20, 2026 | SEER Seer, Inc. | President & CFO | Sell | 7,303 | $1.69 | $12,351.56 | -1.5% | +20.2% | - | |
| Feb 18, 2026 | SEER Seer, Inc. | President & CFO | Sell | 7,743 | $1.99 | $15,446.51 | -1.5% | -16.8% | - | |
| Nov 19, 2025 | SEER Seer, Inc. | President & CFO | Sell | 6,797 | $1.97 | $13,399.61 | -1.5% | +2.5% | - | |
| Aug 20, 2025 | SEER Seer, Inc. | President & CFO | Sell | 6,827 | $2.04 | $13,955.07 | -1.5% | -3.4% | -1.5% | |
| May 20, 2025 | SEER Seer, Inc. | President & CFO | Sell | 6,760 | $2.08 | $14,027.68 | -1.5% | -1.9% | -19.6% | |
| Feb 4, 2025 | SEER Seer, Inc. | President & CFO | Sell | 3,550 | $2.24 | $7,939.58 | -0.7% | -13.6% | -20.6% | |
| Feb 22, 2024 | SEER Seer, Inc. | President & CFO | Sell | 12,684 | $1.58 | $20,024.23 | -2.6% | +28.7% | +43.9% | |
| Feb 5, 2024 | SEER Seer, Inc. | President and CFO | Sell | 3,608 | $1.67 | $6,014.54 | -1.1% | +34.1% | +36.5% |