Insider · CIK 0001834217
David R. Horn
Files at FOCL (EDAP TMS SA), SEER (Seer, Inc.). First filing Feb 5, 2025, latest Aug 19, 2026.
In brief
David R. Horn files SEC Form 4 as CFO, president and director at SEER (Seer, Inc.), and also at FOCL (EDAP TMS SA). Since Feb 5, 2025, David R. Horn has reported 1 open-market buy worth $48k and 7 open-market sells worth $92k, the latest filed on Aug 19, 2026.
A track record needs three past buys with six months of prices behind them; David R. Horn has 0, so none is measured yet.
The newest scored trade: sold $15k of SEER on Aug 18, 2026, filed Aug 19, 2026, scored 22 (weak). In the last 12 months: 1 buy worth $48k and 4 sells worth $56k.
Where the trades landed
Last year at the 2 companies this insider has traded most, with each buy and sell on the bar it happened.
SEER: Seer, Inc.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
FOCL: EDAP TMS SA
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 22Weak | SEERsell Seer, Inc. | $15k 7,309 shares | -1% | +25% from low-15% from high | |
| 44Moderate | EDAP TMS SA | $48k 10,000 shares | - | - | |
| 22Weak | SEERsell Seer, Inc. | $12k 7,303 shares | -1% | +1% from low-29% from high | |
| 30Weak | Seer, Inc. | $15k 7,743 shares | -2% | +22% from low-15% from high | |
| 30Weak | Seer, Inc. | $13k 6,797 shares | -2% | +20% from low-22% from high | |
| 30Weak | Seer, Inc. | $14k 6,827 shares | -2% | +27% from low-20% from high | |
| 30Weak | Seer, Inc. | $14k 6,760 shares | -2% | +30% from low-18% from high | |
| 30Weak | Seer, Inc. | $7,940 3,550 shares | -1% | - |
Transactions
Every row this insider has filed, 11 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Aug 18, 2026 | SEER Seer, Inc. | SOpen-market sale Class A Common Stock | -7,309 | $2.03 | $15k | 486,650 | Aug 19, 2026 |
| Aug 14, 2026 | FOCL EDAP TMS SA | POpen-market purchase Common Stock | +10,000 | $4.75 | $48k | 10,000 | Aug 17, 2026 |
| May 20, 2026 | SEER Seer, Inc. | SOpen-market sale Class A Common Stock | -7,303 | $1.69 | $12k | 493,959 | May 21, 2026 |
| Feb 18, 2026 | SEER Seer, Inc. | SOpen-market sale Class A Common Stock | -7,743 | $1.99 | $15k | 501,262 | Feb 19, 2026 |
| Feb 3, 2026 | SEER Seer, Inc. | AGrant or award Class A Common Stock | +79,000 | $0.00 | $0 | 509,005 | Feb 5, 2026 |
| Feb 3, 2026 | SEER Seer, Inc. | AGrant or award Employee Stock Option (right to buy)derivative | +119,000 | $0.00 | $0 | 119,000 | Feb 5, 2026 |
| Nov 19, 2025 | SEER Seer, Inc. | SOpen-market sale Class A Common Stock | -6,797 | $1.97 | $13k | 436,802 | Nov 21, 2025 |
| Aug 20, 2025 | SEER Seer, Inc. | SOpen-market sale Class A Common Stock | -6,827 | $2.04 | $14k | 436,802 | Aug 21, 2025 |
| May 20, 2025 | SEER Seer, Inc. | SOpen-market sale Class A Common Stock | -6,760 | $2.08 | $14k | 443,629 | May 22, 2025 |
| Feb 18, 2025 | SEER Seer, Inc. | FTax withholding Class A Common Stock | -26,572 | $2.30 | $61k | 450,389 | Feb 20, 2025 |
| Feb 4, 2025 | SEER Seer, Inc. | SOpen-market sale Class A Common Stock | -3,550 | $2.24 | $7,940 | 476,961 | Feb 5, 2025 |
Questions about David R. Horn
Answered from the filings on this page, as of the latest one.
Is David R. Horn buying or selling?
In the last 12 months David R. Horn reported 1 open-market buy worth $48k and 4 open-market sells worth $56k on SEC Form 4; the latest was sold $15k of SEER on Aug 18, 2026. Grants, option exercises and tax withholding are not counted.
How did David R. Horn's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and David R. Horn has 0.
Where does David R. Horn file Form 4?
David R. Horn has filed Form 4 at SEER (Seer, Inc.) as PRESIDENT & CFO; FOCL (EDAP TMS SA). A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.