A Mark Zeffiro
CIK 1446066 · President, CEO · last filed 2026-06-02
A Mark Zeffiro is a President, CEO who has filed 61 SEC Form 4 insider transactions across 3 companies since 2008. The most recent filing, for ATKR, was dated Jun 2, 2026. Across all open-market trades the lifetime net is −$4.9M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $6.6M 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.
$6.59M
3
61
-$4.90M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| ATKR | Director | 23,945 | $79.27 | $1.90M | -$1.25M | 21 | 2026-06-02 |
| Horizon Global Corp (HZN) Delisted | President, CEO | 342,696 | $1.76 | $603.1K | -$295.7K | 11 | 2018-03-05 |
| TRS | Executive Vice President & CFO | 113,562 | $41.32 | $4.69M | -$3.35M | 29 | 2014-10-31 |
Recent Filings
61 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-06-02 | ATKR | Grant (A) | +54 | $0 | EDGAR |
| 2026-03-03 | ATKR | Grant (A) | +69 | $0 | EDGAR |
| 2026-02-02 | ATKR | Grant (A) | +2,275 | $0 | EDGAR |
| 2025-12-19 | ATKR | Grant (A) | +67 | $0 | EDGAR |
| 2025-09-03 | ATKR | Grant (A) | +73 | $0 | EDGAR |
| 2025-05-30 | ATKR | Grant (A) | +64 | $0 | EDGAR |
| 2025-03-03 | ATKR | Grant (A) | +66 | $0 | EDGAR |
| 2025-01-31 | ATKR | Grant (A) | +1,795 | $0 | EDGAR |
| 2024-12-17 | ATKR | Grant (A) | +43 | $0 | EDGAR |
| 2024-11-19 | ATKR | Grant (A) | +87 | $0 | EDGAR |