JAMES BRIAN WINDSOR
CIK 1790933 · See Remarks · last filed 2026-05-13
JAMES BRIAN WINDSOR is a corporate insider who has filed 10 SEC Form 4 insider transactions across 3 companies since 2019. The most recent filing, for RNTX, was dated May 13, 2026. Across all open-market trades the lifetime net is −$333.4K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $25.9K 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.
$25.9K
3
10
-$333.4K
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| RNTX | See Remarks | 27,046 | $0.96 | $25.9K | $25.0K | 1 | 2026-05-13 |
| Rein Therapeutics, Inc. (ALRN) Delisted | President and CEO | 7,347 | $2.11 | $15.5K | $11.6K | 5 | 2024-12-09 |
| TFF Pharmaceuticals, Inc. (TFFP) Delisted | Chief Science Officer | 30,000 | $0.07 | $1.9K | -$370.0K | 4 | 2020-12-09 |
Recent Filings
10 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-05-13 | RNTX | Mixed | +25,000 | $25.0K | EDGAR |
| 2024-12-09 | Rein Therapeutics, Inc. (ALRN) Delisted | Buy (P) | +400 | $898 | EDGAR |
| 2024-12-04 | Rein Therapeutics, Inc. (ALRN) Delisted | Grant (A) | — | $0 | EDGAR |
| 2024-03-06 | Rein Therapeutics, Inc. (ALRN) Delisted | Exer (M) | +2,000 | $0 | EDGAR |
| 2023-12-18 | Rein Therapeutics, Inc. (ALRN) Delisted | Buy (P) | +225 | $758 | EDGAR |
| 2023-11-21 | Rein Therapeutics, Inc. (ALRN) Delisted | Buy (P) | +5,076 | $10.0K | EDGAR |
| 2020-12-09 | TFF Pharmaceuticals, Inc. (TFFP) Delisted | Mixed | — | -$332.5K | EDGAR |
| 2020-08-26 | TFF Pharmaceuticals, Inc. (TFFP) Delisted | Grant (A) | — | $0 | EDGAR |
| 2019-12-03 | TFF Pharmaceuticals, Inc. (TFFP) Delisted | Grant (A) | — | $0 | EDGAR |
| 2019-10-29 | TFF Pharmaceuticals, Inc. (TFFP) Delisted | Mixed | +5,000 | $25.0K | EDGAR |