Mark F. Lamps
CIK 1769052 · Pres. Safety & Infrastructure · last filed 2026-06-02
Mark F. Lamps is a Pres. Safety & Infrastructure who has filed 62 SEC Form 4 insider transactions across 1 company since 2019. The most recent filing, for ATKR, was dated Aug 10, 2026. Across all open-market trades the lifetime net is −$2.5M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $3.4M 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.
$3.38M
1
62
-$2.46M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| ATKR | Pres. Safety & Infrastructure | 36,102 | $93.75 | $3.38M | -$2.46M | 51 | 2026-06-02 |
Recent Filings
62 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-08-10 | ATKR | Notice (144) | −300 | -$28.1K | EDGAR |
| 2026-06-02 | ATKR | Grant (A) | +53 | $0 | EDGAR |
| 2026-03-03 | ATKR | Grant (A) | +67 | $0 | EDGAR |
| 2026-02-17 | ATKR | Notice (144) | −1,000 | -$66.7K | EDGAR |
| 2026-02-17 | ATKR | Sell (S) | −1,000 | -$65.8K | EDGAR |
| 2025-12-19 | ATKR | Grant (A) | +68 | $0 | EDGAR |
| 2025-11-19 | ATKR | Mixed | +6,990 | -$68.6K | EDGAR |
| 2025-11-17 | ATKR | Notice (144) | −1,000 | -$65.0K | EDGAR |
| 2025-11-17 | ATKR | Mixed | −1,604 | -$103.9K | EDGAR |
| 2025-11-13 | ATKR | Tax (F) | −397 | -$25.8K | EDGAR |
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.