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Horn David R.

In the past year, 1 open-market purchase filing worth $47.5K and 4 sale filings worth $56.0K.

Current role at each company

Open-market trades in the past year

Open-market purchases (P) and sales (S) filed in the last 365 days, not counting derivative securities or duplicate filings. Values leave out price outliers.

Bought
$47.5K
1 filing
Sold
$56.0K
4 filings
Net
−$8.45K
Bought minus sold
Companies
2
With open-market trades

Trades

Every Form 4 that lists Horn David R. as a reporting owner, including filings made jointly with others, grouped by company. Each row adds up one type of transaction in one filing. Only open-market purchases (P) and sales (S) are shown by default.

SEER Seer, Inc.

PRESIDENT & CFO21 trades

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Aug 19, 2026 (view filing)6:59 PM ETAug 181 dayHorn David R.PRESIDENT & CFOSSaleClass A Common Stock−7.31K$2.03−$14.8K−1.5%486.6K after
May 21, 2026 (view filing)May 201 dayHorn David R.PRESIDENT & CFOSSaleClass A Common Stock−7.30K$1.69−$12.3K−1.5%494.0K after
Feb 19, 2026 (view filing)Feb 181 dayHorn David R.PRESIDENT & CFOSSaleClass A Common Stock−7.74K$1.99−$15.4K−1.5%501.3K after
Nov 21, 2025 (view filing)Nov 192 daysHorn David R.PRESIDENT & CFOSSaleClass A Common Stock−6.80K$1.97−$13.4K−1.5%436.8K after
Aug 21, 2025 (view filing)Aug 201 dayHorn David R.PRESIDENT & CFOSSaleClass A Common Stock−6.83K$2.04−$13.9K−1.5%436.8K after
May 22, 2025 (view filing)May 202 daysHorn David R.PRESIDENT & CFOSSaleClass A Common Stock−6.76K$2.08−$14.1K−1.5%443.6K after
Feb 5, 2025 (view filing)Feb 41 dayHorn David R.PRESIDENT & CFOSSaleClass A Common Stock−3.55K$2.24−$7.95K−0.7%477.0K after
Feb 23, 2024 (view filing)Feb 221 dayHorn David R.PRESIDENT & CFOSSaleClass A Common Stock−12.7K$1.58−$20.0K−2.6%480.5K after
Feb 7, 2024 (view filing)Feb 52 daysHorn David R.President and CFOSSaleClass A Common Stock−3.61K$1.67−$6.03K−1.1%328.2K after
Feb 22, 2023 (view filing)Feb 211 dayHorn David R.Chief Financial OfficerSSaleClass A Common Stock−5.95K$4.13−$24.6K−1.8%331.8K after

See all 21 trades at SEER

FOCL Edap TMS SA

Director1 trade

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Aug 17, 2026 (view filing)6:06 AM ETAug 143 daysHorn David R.DirectorPPurchase+10.0K$4.75+$47.5KNew position10.0K after