Mark D Klein
CIK 1322402 · Chairman, CEO and President · last filed 2026-06-16
"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.
Loading insider history…
Disclosed Exposure
$68.21M
Companies
6
Total Filings
78
Lifetime Open-Market Net
$9.28M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| 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 · Page 5 of 8
78 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2020-05-13 | SSSS | Buy (P) | +8,500 | $51.9K | EDGAR |
| 2020-04-30 | SSSS | Other (J) | — | $0 | EDGAR |
| 2020-01-09 | SSSS | Buy (P) | +18,508 | $125.0K | EDGAR |
| 2019-07-19 | SURO CAPITAL CORP. (GSVC) Delisted | Grant (A) | — | $0 | EDGAR |
| 2019-06-17 | SURO CAPITAL CORP. (GSVC) Delisted | Buy (P) | +5,000 | $33.4K | EDGAR |
| 2019-06-11 | SURO CAPITAL CORP. (GSVC) Delisted | Buy (P) | +30,000 | $193.3K | EDGAR |
| 2017-09-28 | SURO CAPITAL CORP. (GSVC) Delisted | Buy (P) | +10,000 | $50.2K | EDGAR |
| 2017-09-21 | SURO CAPITAL CORP. (GSVC) Delisted | Buy (P) | +10,000 | $53.6K | EDGAR |
| 2017-09-14 | SURO CAPITAL CORP. (GSVC) Delisted | Buy (P) | +10,000 | $51.1K | EDGAR |
| 2017-09-07 | SURO CAPITAL CORP. (GSVC) Delisted | Buy (P) | +10,000 | $49.2K | EDGAR |
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
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.
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.