Mark A. Schallenberger
CIK 1960742 · Chief Operating Officer · last filed 2026-02-18
Mark A. Schallenberger is a Chief Operating Officer who has filed 6 SEC Form 4 insider transactions across 1 company since 2023. The most recent filing shows the insider had shares withheld for taxes covering $4.5K of XTNT on Feb 18, 2026. Current disclosed insider exposure totals $291.8K 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.
$291.8K
1
6
$0
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| XTNT | Chief Operating Officer | 663,157 | $0.44 | $291.8K | $0 | 6 | 2026-02-18 |
Recent Filings
6 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-02-18 | XTNT | Tax (F) | −7,709 | -$4.5K | EDGAR |
| 2025-11-18 | XTNT | Grant (A) | +292,253 | $0 | EDGAR |
| 2025-01-17 | XTNT | Grant (A) | +173,469 | $0 | EDGAR |
| 2024-04-05 | XTNT | Grant (A) | +177,551 | $0 | EDGAR |
| 2023-08-17 | XTNT | Grant (A) | +116,144 | $0 | EDGAR |
| 2023-02-17 | XTNT | Grant (A) | +89,000 | $0 | EDGAR |