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 5 of 5
48 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2021-05-04 | ATEC | Mixed | — | -$372.1K | EDGAR |
| 2021-04-28 | ATEC | Sell (S) | −14,572 | -$242.3K | EDGAR |
| 2021-02-22 | ATEC | Grant (A) | −40,000 | $0 | EDGAR |
| 2020-10-14 | ATEC | Sell (S) | −89,999 | -$852.3K | EDGAR |
| 2020-04-24 | ATEC | Grant (A) | +216,422 | $0 | EDGAR |
| 2020-04-08 | ATEC | Grant (A) | +2,398 | $9.4K | EDGAR |
| 2020-03-12 | ATEC | Buy (P) | +11,000 | $49.6K | EDGAR |
| 2019-05-15 | ATEC | Grant (A) | +343,750 | $0 | EDGAR |
Showing 41–48 of 48
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Page 5 of 5
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.