Deep Track Biotechnology Master Fund, Ltd.
- SEC CIK
- 0002015536
No open-market purchases or sales filed in the past year.
Current role at each company
- ATTO Attovia Therapeutics, Inc.10% Owneras of Aug 10, 2026
- LBRX LB Pharmaceuticals Inc10% Owneras of Aug 3, 2026
- DVAX Dynavax Technologies Corp10% Owneras of Feb 11, 2026
- NKTR Nektar Therapeutics10% Owneras of May 13, 2024
Open-market trades in the past year
Open-market purchases (P) and sales (S) filed in the last 365 days, not counting derivative securities or duplicate filings. Values leave out price outliers.
- Bought
- –
- 0 filings
- Sold
- –
- 0 filings
- Net
- –
- Bought minus sold
- Companies
- 0
- With open-market trades
Trades
Every Form 4 that lists Deep Track Biotechnology Master Fund, Ltd. as a reporting owner, including filings made jointly with others, grouped by company. Each row adds up one type of transaction in one filing. Only open-market purchases (P) and sales (S) are shown by default.
LBRX LB Pharmaceuticals Inc
10% Owner5 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Aug 3, 2026 (view filing)7:28 PM ET | Jul 30 | 4 days | Kroin David and 2 others10% Owner | PPurchase | +286.2K | $34.94 | +$10.0M | –664.6K after | Derivative |
| Feb 10, 2026 (view filing)4:30 PM ET | Feb 6 | 4 days | Kroin David and 3 others10% Owner | PPurchase | +378.4K | $21.17 | +$8.01M | –378.4K after | Derivative |
| Feb 10, 2026 (view filing)4:30 PM ET | Feb 6 | 4 days | Kroin David and 3 others10% Owner | PPurchase | +93.9K | $21.17 | +$1.99M | –93.9K after | Derivative |
| Sep 16, 2025 (view filing)6:09 PM ET | Sep 12 | 4 days | Kroin David and 2 others10% Owner | PPurchase | +2.00M | $15.00 | +$30.0M | +291.5%2.69M after | |
| Sep 16, 2025 (view filing)6:09 PM ET | Sep 12 | 4 days | Kroin David and 2 others10% Owner | PPurchase | +666.7K | $15.00 | +$10.0M | New position666.7K after |
DVAX Dynavax Technologies Corp
10% Owner1 trade
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Aug 22, 2025 (view filing)8:49 PM ET | Aug 21-22 | 1 day | Kroin David and 2 others10% Owner | SSaleCommon Stock, par value $0.001 per share | −2.07M | $10.82 | −$22.4M | −11.6%15.7M after | 2 lots |
NKTR Nektar Therapeutics
10% Owner1 trade
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| May 13, 2024 (view filing)4:36 PM ET | May 10 | 3 days | Kroin David and 2 others10% Owner | SSale | −56.0K | $1.78 | −$99.6K | −0.3%18.3M after |