M. Klein Associates, Inc.
CIK 1751504 · Chairman · last filed 2026-08-05
M. Klein Associates, Inc. is a Chairman who has filed 9 SEC Form 4 insider transactions across 6 companies since 2019. The most recent filing shows the insider bought $10.5M of XIIIU on Aug 5, 2026. Across all open-market trades the lifetime net is −$28.6K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $194.0M across reported positions. The firm reports its address in New York, NY. 30 SEC filings were submitted jointly with Michael Stuart Klein.
"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.
$193.98M
6
9
-$28.6K
Filer Profile
NEW YORK, NY 10019
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| XIIIU | 10%+ Owner | 350,000 | — | — | $10.50M | 1 | 2026-08-05 |
| CCXIU | 10%+ Owner | 14,300,000 | $12.90 | $184.47M | $15.00M | 1 | 2025-12-19 |
| OKLO | Chairman | 250,000 | $38.04 | $9.51M | -$31.53M | 4 | 2025-06-23 |
| Infleqtion, Inc. (CCCXU) Delisted | 10%+ Owner | 10,650,000 | $15.00 | $159.75M | $6.00M | 1 | 2025-05-19 |
| Skillsoft Corp. (SKIL.WS) Delisted | 10%+ Owner | 0 | $0.01 | $0 | $0 | 1 | 2022-06-22 |
| Churchill Capital Corp (CCC.WS) Delisted | Director | — | — | — | $0 | 1 | 2019-05-14 |
Recent Filings
9 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-08-05 | XIIIU | Buy (P) | +1,050,000 | $10.50M | EDGAR |
| 2025-12-19 | CCXIU | Buy (P) | +1,500,000 | $15.00M | EDGAR |
| 2025-06-23 | OKLO | Sell (S) | −500,000 | -$31.53M | EDGAR |
| 2025-05-19 | Infleqtion, Inc. (CCCXU) Delisted | Buy (P) | +600,000 | $6.00M | EDGAR |
| 2024-11-18 | OKLO | Other (J) | −40,350,000 | $0 | EDGAR |
| 2024-07-02 | OKLO | Grant (A) | +4,350,000 | $43.50M | EDGAR |
| 2024-05-13 | OKLO | Exer (M) | +37,500,000 | $0 | EDGAR |
| 2022-06-22 | Skillsoft Corp. (SKIL.WS) Delisted | Other (J) | −34,500,000 | $0 | EDGAR |
| 2019-05-14 | Churchill Capital Corp (CCC.WS) Delisted | Mixed | — | $0 | 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.