Bain Capital Life Sciences Investors, LLC
SEC insider (Form 3/4/5 filer). CIK 0001703031. 10% Owner at RAPID MICRO BIOSYSTEMS, INC. (RPID) and 5 other issuers. 17 reported Form 4/5 transactions since Sep 2024; latest on May 20, 2026. Located in BOSTON, MA.
Companies Bain Capital Life Sciences Investors, LLC has filed insider reports for
- RAPID MICRO BIOSYSTEMS, INC. (RPID): 10% Owner
- Heartflow, Inc. (HTFL): 10% Owner
- Kailera Therapeutics, Inc. (KLRA): 10% Owner
- Solid Biosciences Inc. (SLDB): 10% Owner
- Olema Pharmaceuticals, Inc. (OLMA): 10% Owner
- NewAmsterdam Pharma Co N.V. (NAMS): 10% Owner
Bain Capital Life Sciences Investors, LLC
CIK: 0001703031
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 (17 total)
- May 20, 2026RPID
RAPID MICRO BIOSYSTEMS, INC.
PurchaseIndirectPre-Funded Warrant (right to buy)
1.5M shares- - May 20, 2026RPID
RAPID MICRO BIOSYSTEMS, INC.
PurchaseIndirectSeries B Warrant (right to buy)
1.5M shares- - May 20, 2026RPID
RAPID MICRO BIOSYSTEMS, INC.
PurchaseIndirectSeries A Warrant (right to buy)
1.5M shares- - Apr 30, 2026HTFL
Heartflow, Inc.
SaleIndirect56.2K shares at avg. $30.05$1.7M - Apr 30, 2026HTFL
Heartflow, Inc.
SaleIndirect892.5K shares at avg. $29.18$26.0M - Apr 29, 2026HTFL
Heartflow, Inc.
SaleIndirect797.1K shares at avg. $29.37$23.4M - Apr 28, 2026HTFL
Heartflow, Inc.
SaleIndirect254.1K shares at avg. $30.51$7.8M - Apr 20, 2026KLRA
Kailera Therapeutics, Inc.
PurchaseIndirect1.6M shares at avg. $16.00$25.0M - Apr 20, 2026KLRA
Kailera Therapeutics, Inc.
ConversionIndirect4.1M shares- - Apr 20, 2026KLRA
Kailera Therapeutics, Inc.
ConversionIndirect16.9M shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| May 20, 2026 |  RPID RAPID MICRO BIOSYSTEMS, INC. | Purchase Pre-Funded Warrant (right to buy) | 1,463,000 | - | - | Indirect |
| May 20, 2026 | RPID RAPID MICRO BIOSYSTEMS, INC. | Purchase Series B Warrant (right to buy) | 1,463,000 | - | - | Indirect |
| May 20, 2026 | RPID RAPID MICRO BIOSYSTEMS, INC. | Purchase Series A Warrant (right to buy) | 1,463,000 | - | - | Indirect |
| Apr 30, 2026 |  HTFL Heartflow, Inc. | Sale | 56,224 | $30.05 | $1,689,531 | Indirect |
| Apr 30, 2026 | HTFL Heartflow, Inc. | Sale | 892,533 | $29.18 | $26,044,113 | Indirect |
| Apr 29, 2026 | HTFL Heartflow, Inc. | Sale | 797,133 | $29.37 | $23,411,796 | Indirect |
| Apr 28, 2026 | HTFL Heartflow, Inc. | Sale | 254,110 | $30.51 | $7,752,896 | Indirect |
| Apr 20, 2026 |  KLRA Kailera Therapeutics, Inc. | Purchase | 1,562,500 | $16.00 | $25,000,000 | Indirect |
| Apr 20, 2026 | KLRA Kailera Therapeutics, Inc. | Conversion | 4,145,768 | - | $0 | Indirect |
| Apr 20, 2026 | KLRA Kailera Therapeutics, Inc. | Conversion | 16,875,000 | - | $0 | Indirect |
1-10 of 17 transactions