Michael Blitzer
CIK 1458423 · Chief Executive Officer · last filed 2026-09-18
Michael Blitzer is a Chief Executive Officer who has filed 32 SEC Form 4 insider transactions across 9 companies since 2023. The most recent filing, for MRLN, was dated Sep 18, 2026. Across all open-market trades the lifetime net is −$69.2M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $56.1M across reported positions. 13 SEC filings were submitted jointly with KINGSTOWN CAPITAL MANAGEMENT L.P.
"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.
Charts
Trading activity, where the exposure sits, and each trade against the stock price.
USARW price and trades
Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.
Shares held
Shares owned after each reported transaction on this company (direct holdings as reported).
Open-market buying and selling
by monthDollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.
Exposure by company
latestMost recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.
Filer Profile
NEW YORK, NY 10001
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| MRLN | Director | 300,000 | $0.86 | $257.6K | $0 | 2 | 2026-09-18 |
| USAR | Director | 3,984,784 | $8.91 | $35.50M | $2.14M | 4 | 2026-07-20 |
| LUNR | Director | 1,937,196 | $10.48 | $20.30M | $2.19M | 4 | 2026-06-08 |
| Inflection Point Acquisition Corp. III (IPCXU) Delisted | Chief Executive Officer | 0 | $4.99 | $0 | $0 | 1 | 2026-01-05 |
| IPEXU | Chief Executive Officer | — | — | — | $0 | 1 | 2026-01-05 |
| USA Rare Earth, Inc. (USARW) Delisted | Director | 1,310,000 | $1.10 | $1.44M | -$65.89M | 5 | 2025-10-03 |
| Inflection Point Acquisition Corp. V (MAYAU) Delisted | Chief Executive Officer | — | — | — | $0 | 1 | 2025-09-11 |
| Intuitive Machines, Inc. (LUNRW) Delisted | Director | 1,671,785 | $0.15 | $259.1K | -$7.66M | 6 | 2025-02-05 |
| USA Rare Earth, Inc. (IPXXW) Delisted | Chairman and CEO | 6,200,000 | $1.07 | $6.63M | $0 | 1 | 2024-11-19 |
Recent Filings
32 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-09-18 | MRLN | Other (J) | +262,500 | $0 | EDGAR |
| 2026-07-20 | USAR | Grant (A) | — | $0 | EDGAR |
| 2026-06-08 | LUNR | Grant (A) | +5,948 | $0 | EDGAR |
| 2026-06-04 | USAR | Grant (A) | — | $0 | EDGAR |
| 2026-05-22 | MRLN | Grant (A) | +37,500 | $0 | EDGAR |
| 2026-05-21 | USAR | Exer (M) | +30,483 | $0 | EDGAR |
| 2026-05-20 | LUNR | Other (J) | — | $0 | EDGAR |
| 2026-05-18 | LUNR | Notice (144) | −1,608,000 | -$54.04M | EDGAR |
| 2026-01-29 | USAR | Buy (P) | +100,000 | $2.14M | EDGAR |
| 2026-01-05 | Inflection Point Acquisition Corp. III (IPCXU) Delisted | Other (J) | −500,000 | $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.