buyModerate cluster of 4
Deep Track Biotechnology Master Fund, Ltd. bought $40M of LBRX
owner at LB PHARMACEUTICALS INC. 2,666,666 shares at an average of $15.00, traded Sep 12, 2025, filed Sep 16, 2025.
Conviction score
57Value
$40M
2,666,666 shares
Holdings after
666,666
+389% from before
From 52-week low
-
no price yet
From 52-week high
-
no price yet
Score components
- +12Role10% owner
- +25Trade size$40.0M at market
- +10Relative to holdingsHoldings up 389%
- 0Price contextNo price history yet
- +15Cluster4 insiders buying within 14 days
- 0Repeat buyingFirst buy in 90 days
- 0Track recordToo few past buys to judge (0 with prices)
- -5Outside holderA 10% owner who is not an officer or director
What happened after comparable buys
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
Rows in this filing
Every transaction in Form 4 0002015536-25-000007, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Sep 12, 2025 | CConversion Common Stock | +686,138 | - | - | 686,138 | Sep 16, 2025 |
| Sep 12, 2025 | POpen-market purchase Common Stock | +2,000,000 | $15.00 | $30M | 2,686,138 | Sep 16, 2025 |
| Sep 12, 2025 | POpen-market purchase Common Stockindirect: By Deep Track Special Opportunities Fund, LP | +666,666 | $15.00 | $10.0M | 666,666 | Sep 16, 2025 |
| Sep 12, 2025 | CConversion Series C Preferred Stockderivative | -16,666,667 | - | - | 0 | Sep 16, 2025 |
Related signals
Other insiders at LB PHARMACEUTICALS INC and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 57Moderate | LB PHARMACEUTICALS INC | Vida Ventures GP III, L.L.C. owner | $5.0M 333,333 shares | +61% | |
| 65Notable | LB PHARMACEUTICALS INC | Ran Nussbaum director | $15M 1,000,000 shares | +243% | |
| 57Moderate | LB PHARMACEUTICALS INC | Pontifax Management 4 G.P. (2015) Ltd. owner | $15M 1,000,000 shares | +243% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.