James B. Tananbaum
CIK 1581754 · President and CEO · last filed 2026-04-03
"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.
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Disclosed Exposure
$207.77M
Companies
10
Total Filings
29
Lifetime Open-Market Net
-$693.19M
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 |
|---|---|---|---|---|---|---|---|
| ALMS | Director | 4,247,670 | $24.15 | $102.58M | $50.83M | 6 | 2026-04-03 |
| PARDES BIOSCIENCES, INC. (PRDS) Delisted | President and CEO | 1,000 | $2.16 | $2.2K | $3.48M | 5 | 2023-08-31 |
| Theseus Pharmaceuticals, Inc. (THRX) Delisted | 10%+ Owner | 4,108,796 | $4.06 | $16.68M | $10.39M | 1 | 2023-07-19 |
| Kinnate Biopharma Inc. (KNTE) Delisted | Director | 3,525,957 | $2.65 | $9.34M | $24.98M | 6 | 2023-05-10 |
| Disc Medicine, Inc. (GMTX) Delisted | Director | 1,500,000 | $13.50 | $20.25M | $0 | 2 | 2021-10-06 |
| QSI | Director | 4,484,131 | $0.95 | $4.25M | $0 | 1 | 2021-06-14 |
| Disc Medicine, Inc. (FSDC) Delisted | President & CEO | 441,500 | — | — | $17.66M | 1 | 2020-10-19 |
| TXG | 10%+ Owner | 3,500,000 | $28.84 | $100.94M | -$802.19M | 4 | 2020-05-14 |
| AERIE PHARMACEUTICALS INC (AERI) Delisted | 10%+ Owner | 1,672,714 | $15.25 | $25.51M | $0 | 1 | 2019-11-18 |
| AMBIT BIOSCIENCES CORP (AMBI) Delisted | 10%+ Owner | 2,036,616 | $0.54 | $1.10M | $1.65M | 1 | 2013-10-16 |
Recent Filings · Page 3 of 3
29 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2020-12-04 | Kinnate Biopharma Inc. (KNTE) Delisted | Buy (P) | +1,000,000 | $20.00M | EDGAR |
| 2020-12-04 | Kinnate Biopharma Inc. (KNTE) Delisted | Grant (A) | — | $0 | EDGAR |
| 2020-10-19 | Disc Medicine, Inc. (FSDC) Delisted | Buy (P) | +1,766,000 | $17.66M | EDGAR |
| 2020-05-14 | TXG | Mixed | +2,400,990 | -$580.94M | EDGAR |
| 2020-05-08 | TXG | Conv (C) | +10,000,000 | $0 | EDGAR |
| 2020-03-26 | TXG | Conv (C) | +10,853,095 | $0 | EDGAR |
| 2020-03-19 | TXG | Mixed | +2,795,005 | -$221.25M | EDGAR |
| 2019-11-18 | AERIE PHARMACEUTICALS INC (AERI) Delisted | Exer (X) | +76,800 | $2.30M | EDGAR |
| 2013-10-16 | AMBIT BIOSCIENCES CORP (AMBI) Delisted | Buy (P) | +238,707 | $1.65M | EDGAR |
Showing 21–29 of 29
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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.