Mark D Klein
CIK 1322402 · Chairman, CEO and President · last filed 2026-06-16
Mark D Klein is a Chairman, CEO and President who has filed 78 SEC Form 4 insider transactions across 6 companies since 2009. The most recent filing, for SSSSL, was dated Jun 16, 2026. Across all open-market trades the lifetime net is +$9.3M, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $68.2M 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.
$68.21M
6
78
$9.28M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| SSSSL | Chairman, CEO and President | 1,732,756 | $24.99 | $43.30M | $1.71M | 28 | 2026-06-16 |
| SSSS | Chairman, CEO and President | 711,296 | $12.54 | $8.92M | $1.90M | 14 | 2021-12-14 |
| Claritev Corp (CCXX.WS) Delisted | Director | 220,000 | — | — | $4.96M | 1 | 2020-10-08 |
| SURO CAPITAL CORP. (GSVC) Delisted | CEO and President | 135,674 | — | — | $709.4K | 25 | 2019-07-19 |
| Atlantic Alliance Partnership Corp. (AAPC) Delisted | Director | 300,474 | — | — | $0 | 4 | 2016-11-03 |
| APP | Director | 40,019 | $399.46 | $15.99M | $0 | 1 | 2009-01-14 |
Recent Filings
78 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-06-16 | SSSSL | Mixed | +56,735 | -$3.98M | EDGAR |
| 2026-04-22 | SSSSL | Buy (P) | +5,000 | $65.8K | EDGAR |
| 2025-12-16 | SSSSL | Tax (F) | −34,034 | -$320.4K | EDGAR |
| 2025-11-25 | SSSSL | Grant (A) | +174,465 | $0 | EDGAR |
| 2025-08-12 | SSSSL | Buy (P) | +14,571 | $124.2K | EDGAR |
| 2025-05-19 | SSSSL | Grant (A) | +300,000 | $0 | EDGAR |
| 2025-05-09 | SSSSL | Buy (P) | +16,500 | $86.8K | EDGAR |
| 2025-02-12 | SSSSL | Tax (F) | −32,858 | -$202.7K | EDGAR |
| 2024-12-18 | SSSSL | Tax (F) | −17,017 | -$102.4K | EDGAR |
| 2024-12-12 | SSSSL | Mixed | +78,728 | -$130.6K | 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.