John Todd Koning
CIK 1830843 · CHIEF FINANCIAL OFFICER · last filed 2026-03-17
John Todd Koning is a CHIEF FINANCIAL OFFICER who has filed 23 SEC Form 4 insider transactions across 2 companies since 2021. The most recent filing shows the insider sold $986.2K of ATEC on Mar 17, 2026. Across all open-market trades the lifetime net is −$5.8M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $5.0M 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.
$4.97M
2
23
-$5.82M
Holdings By Company
Recent Filings
23 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-03-17 | ATEC | Sell (S) | −79,789 | -$986.2K | EDGAR |
| 2026-03-09 | ATEC | Tax (F) | −68,910 | -$866.2K | EDGAR |
| 2026-02-27 | ATEC | Grant (A) | +335,868 | $0 | EDGAR |
| 2025-12-10 | ATEC | Tax (F) | −15,266 | -$327.5K | EDGAR |
| 2025-08-07 | ATEC | Tax (F) | −5,315 | -$81.5K | EDGAR |
| 2025-04-23 | ATEC | Sell (S) | −37,500 | -$401.6K | EDGAR |
| 2025-04-03 | ATEC | Grant (A) | +20,929 | $0 | EDGAR |
| 2025-03-12 | ATEC | Sell (S) | −165,121 | -$1.60M | EDGAR |
| 2025-01-31 | ATEC | Grant (A) | +254,872 | $0 | EDGAR |
| 2024-04-26 | ATEC | Sell (S) | −37,500 | -$480.8K | EDGAR |