David Sponsel
CIK 1772837 · EVP, SALES · last filed 2026-03-13
"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.
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Disclosed Exposure
$4.18M
Companies
1
Total Filings
48
Lifetime Open-Market Net
-$13.68M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| 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 · Page 3 of 5
48 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2023-12-26 | ATEC | Sell (S) | −2,500 | -$37.5K | EDGAR |
| 2023-06-20 | ATEC | Sell (S) | −55,577 | -$898.7K | EDGAR |
| 2023-05-16 | ATEC | Tax (F) | −68,174 | -$1.06M | EDGAR |
| 2023-04-27 | ATEC | Tax (F) | −35,590 | -$574.8K | EDGAR |
| 2023-03-08 | ATEC | Sell (S) | −16,823 | -$266.1K | EDGAR |
| 2023-02-03 | ATEC | Grant (A) | +189,021 | $0 | EDGAR |
| 2023-01-10 | ATEC | Sell (S) | −10,000 | -$119.9K | EDGAR |
| 2022-12-05 | ATEC | Sell (S) | −10,000 | -$98.8K | EDGAR |
| 2022-11-09 | ATEC | Sell (S) | −10,000 | -$92.5K | EDGAR |
| 2022-08-12 | ATEC | Tax (F) | −620 | -$5.5K | EDGAR |
Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.