David Sponsel
CIK 1772837 · EVP, SALES · last filed 2026-03-13
David Sponsel is an EVP, SALES who has filed 48 SEC Form 4 insider transactions across 1 company since 2019. The most recent filing shows the insider sold $2.0M of ATEC on Mar 13, 2026. Across all open-market trades the lifetime net is −$13.7M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $4.2M across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$4.18M
1
48
-$13.68M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| ATEC | EVP, SALES | 504,932 | $8.28 | $4.18M | -$13.68M | 48 | 2026-03-13 |
Recent Filings
48 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-03-13 | ATEC | Sell (S) | −163,452 | -$2.05M | EDGAR |
| 2026-02-27 | ATEC | Grant (A) | +318,884 | $0 | EDGAR |
| 2026-02-06 | ATEC | Sell (S) | −60,425 | -$833.3K | EDGAR |
| 2025-12-12 | ATEC | Sell (S) | −21,106 | -$438.8K | EDGAR |
| 2025-12-10 | ATEC | Sell (S) | −988 | -$21.2K | EDGAR |
| 2025-10-28 | ATEC | Sell (S) | −70,000 | -$1.13M | EDGAR |
| 2025-09-19 | ATEC | Sell (S) | −140,000 | -$2.11M | EDGAR |
| 2025-08-07 | ATEC | Tax (F) | −982 | -$15.1K | EDGAR |
| 2025-04-03 | ATEC | Grant (A) | +3,866 | $0 | EDGAR |
| 2025-03-10 | ATEC | Sell (S) | −33,732 | -$365.3K | EDGAR |