Pontifax Management 4 G.P. (2015) Ltd.
SEC insider (Form 3/4/5 filer). CIK 0001726334. 10% Owner at Keros Therapeutics, Inc. (KROS) and 1 other issuer. 6 reported Form 4/5 transactions since Sep 2024; latest on Oct 15, 2025. Located in NEW YORK, NY.
Companies Pontifax Management 4 G.P. (2015) Ltd. has filed insider reports for
- Keros Therapeutics, Inc. (KROS): 10% Owner
- LB PHARMACEUTICALS INC (LBRX): 10% Owner
Pontifax Management 4 G.P. (2015) Ltd.
CIK: 0001726334
Transaction Breakdown
Open Market Buys (P)1 (16.7%)
High conviction signal
Open Market Sales (S)4 (66.7%)
Position reduction
Option Exercises (M)0 (0.0%)
Derivative conversions
Awards (A)0 (0.0%)
Compensation grants
Other (G, F, J, C, D, …)1 (16.7%)
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Discretionary Trading P&L
Holdings
Transaction History (6 total)
- Oct 15, 2025KROS
Keros Therapeutics, Inc.
SaleIndirect2.3M shares at avg. $17.75$40.6M - Oct 15, 2025KROS
Keros Therapeutics, Inc.
SaleIndirect1.1M shares at avg. $17.75$19.9M - Oct 15, 2025KROS
Keros Therapeutics, Inc.
SaleIndirect1.2M shares at avg. $17.75$21.8M - Oct 15, 2025KROS
Keros Therapeutics, Inc.
SaleIndirect155.3K shares at avg. $17.75$2.8M - Sep 12, 2025LBRX
LB PHARMACEUTICALS INC
ConversionIndirect411.7K shares- - Sep 12, 2025LBRX
LB PHARMACEUTICALS INC
PurchaseIndirect1M shares at avg. $15.00$15.0M
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Oct 15, 2025 |  KROS Keros Therapeutics, Inc. | Sale | 2,284,612 | $17.75 | $40,551,863 | Indirect |
| Oct 15, 2025 | KROS Keros Therapeutics, Inc. | Sale | 1,121,045 | $17.75 | $19,898,549 | Indirect |
| Oct 15, 2025 | KROS Keros Therapeutics, Inc. | Sale | 1,226,412 | $17.75 | $21,768,813 | Indirect |
| Oct 15, 2025 | KROS Keros Therapeutics, Inc. | Sale | 155,262 | $17.75 | $2,755,901 | Indirect |
| Sep 12, 2025 |  LBRX LB PHARMACEUTICALS INC | Conversion | 411,681 | - | - | Indirect |
| Sep 12, 2025 | LBRX LB PHARMACEUTICALS INC | Purchase | 1,000,000 | $15.00 | $15,000,000 | Indirect |
1-6 of 6 transactions