Quick Takeaways
- Bain Capital Life Sciences Fund II, L.P. filed SCHEDULE 13G/A for Xilio Therapeutics, Inc. Common Stock, par value $0.0001 per share (XLO).
- Disclosed ownership: 8.5%.
- Date of event: 31 Dec 2025.
Bain Capital Life Sciences Fund II, L.P. - 31 Dec 2025 SCHEDULE 13G/A Report for Xilio Therapeutics, Inc. Common Stock, par value $0.0001 per share (XLO)
- Filing Manager
- Bain Capital Life Sciences Fund II, L.P.
- Reporting Manager
- BCLS II Equity Opportunities, LP
- Symbol
- XLO
- Shares outstanding
- 73,644,024 shares
- Disclosed Ownership
- 6,259,742 shares
- Ownership
- 8.5%
- Form type
- SCHEDULE 13G/A
- Filing time
- 17 Feb 2026, 16:30:03 UTC
- Date of event
- 31 Dec 2025
- SEC
- View on sec.gov
Quoteable Key Fact
"Bain Capital Life Sciences Fund II, L.P. disclosed 8.5% ownership in Xilio Therapeutics, Inc. Common Stock, par value $0.0001 per share (XLO) on 31 Dec 2025."
What Changed
- No earlier schedule filing is available for direct comparison.
- Current filing was accepted on 17 Feb 2026, 16:30.
Why This Matters
- This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
- You can verify ownership claims directly against the original SEC filing.
Source Evidence
Backed by Schedule 13D/13G
See Original Filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting Managers (4)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Bain Capital Life Sciences Fund II, L.P. | 1.3% | 992,111 | 0 | 992,111 | /s/ Andrew Hack | Andrew Hack, Partner of Bain Capital Life Sciences Investors, LLC | |
| BCIP Life Sciences Associates, LP | 0.2% | 120,833 | 0 | 120,833 | /s/ Andrew Hack | Andrew Hack, Authorized Signatory of Boylston Coinvestors, LLC | |
| BCLS II Equity Opportunities, LP | 8.5% | 6,259,742 | 0 | 6,259,742 | /s/ Andrew Hack | Andrew Hack, Partner of Bain Capital Life Sciences Investors, LLC | |
| BCLS II Investco, LP | 0% | 0 | 0 | 0 | /s/ Andrew Hack | Andrew Hack, Partner of Bain Capital Life Sciences Investors, LLC |