James B. Tananbaum reported a 14.10% stake in Alumis Inc. (Schedule 13D/A)

Event Jan 8, 2026 · Filed Jan 12, 2026

James B. Tananbaum reported a 14.10% stake in Alumis Inc., 16,189,804 shares, with active intent on Jan 8, 2026. Filed Jan 12, 2026 (Schedule 13D/A).

The filing in full

Holder	Stake	Shares
Foresite Capital Fund VI LP	3.70%	4,247,670
Foresite Capital Management VI, LLC	3.70%	4,247,670
Foresite Capital Fund V, L.P.	5.00%	5,702,536
Labs Co-Invest V, LLC	0.20%	194,459
Foresite Capital Management V, LLC	5.10%	5,896,995
Foresite Capital Opportunity Fund V, L.P.	2.50%	2,908,332
Foresite Capital Opportunity Management V, LLC	2.50%	2,908,332
Foresite Labs Fund I, L.P.	1.70%	1,960,337
Foresite Labs Management I, LLC	1.70%	1,960,337
Foresite Labs Affiliates 2021, LLC	1.00%	1,176,470
Foresite Labs, LLC	1.00%	1,176,470
James B. Tananbaum	14.10%	16,189,804