Lubner David Charles
SEC insider (Form 3/4/5 filer). CIK 0001572000. Director at Braveheart Bio, Inc. (BRVE) and 5 other issuers. 21 reported Form 4/5 transactions since Sep 2024; latest on Aug 7, 2026. Located in SAN FRANCISCO, CA.
Companies Lubner David Charles has filed insider reports for
- Braveheart Bio, Inc. (BRVE): Director
- Dyne Therapeutics, Inc. (DYN): Director
- CRESCENT BIOPHARMA, INC. (CBIO): Director
- Arcellx, Inc. (ACLX): Director
- CARGO Therapeutics, Inc. (CRGX): Director
- Vor Biopharma Inc. (VOR): Director
Lubner David Charles
CIK: 0001572000
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Discretionary Trading P&L
Holdings
Transaction History (21 total)
- Aug 7, 2026BRVE
Braveheart Bio, Inc.
PurchaseDirect55.6K shares at avg. $18.00$1000K - Aug 5, 2026BRVE
Braveheart Bio, Inc.
AwardDirectStock Option (Right to Buy)
60K shares- - Jun 5, 2026DYN
Dyne Therapeutics, Inc.
AwardDirectStock option (right to buy)
35.2K shares- - Jun 2, 2026CBIO
CRESCENT BIOPHARMA, INC.
AwardDirectStock Option (Right to Buy)
11.1K shares- - Apr 28, 2026ACLX
Arcellx, Inc.
DispositionDirectStock Option (right to buy)
8K shares- - Apr 28, 2026ACLX
Arcellx, Inc.
DispositionDirectStock Option (right to buy)
61.5K shares- - Apr 28, 2026ACLX
Arcellx, Inc.
DispositionDirectStock Option (right to buy)
11.5K shares- - Apr 28, 2026ACLX
Arcellx, Inc.
DispositionDirectStock Option (right to buy)
59.4K shares- - Apr 28, 2026ACLX
Arcellx, Inc.
DispositionDirectStock Option (right to buy)
13.6K shares- - Apr 28, 2026ACLX
Arcellx, Inc.
Tender OfferDirect21.7K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Aug 7, 2026 |  BRVE Braveheart Bio, Inc. | Purchase | 55,555 | $18.00 | $999,990 | Direct |
| Aug 5, 2026 | BRVE Braveheart Bio, Inc. | Award Stock Option (Right to Buy) | 60,000 | - | - | Direct |
| Jun 5, 2026 |  DYN Dyne Therapeutics, Inc. | Award Stock option (right to buy) | 35,152 | - | - | Direct |
| Jun 2, 2026 |  CBIO CRESCENT BIOPHARMA, INC. | Award Stock Option (Right to Buy) | 11,050 | - | - | Direct |
| Apr 28, 2026 |  ACLX Arcellx, Inc. | Disposition Stock Option (right to buy) | 8,011 | - | - | Direct |
| Apr 28, 2026 | ACLX Arcellx, Inc. | Disposition Stock Option (right to buy) | 61,538 | - | - | Direct |
| Apr 28, 2026 | ACLX Arcellx, Inc. | Disposition Stock Option (right to buy) | 11,459 | - | - | Direct |
| Apr 28, 2026 | ACLX Arcellx, Inc. | Disposition Stock Option (right to buy) | 59,405 | - | - | Direct |
| Apr 28, 2026 | ACLX Arcellx, Inc. | Disposition Stock Option (right to buy) | 13,626 | - | - | Direct |
| Apr 28, 2026 | ACLX Arcellx, Inc. | Tender Offer | 21,659 | - | $0 | Direct |
1-10 of 21 transactions