Form
SCHEDULE 13D/A
Active or control-oriented beneficial ownership filing.
Foresite Capital Fund VI LP - 01 Apr 2026 SCHEDULE 13D/A Report for Alumis Inc. Common Stock (ALMS)
- Filing manager
- Foresite Capital Fund VI LP
- Reporting owner
- James B. Tananbaum
- Security
- Alumis Inc. Common Stock
- Beneficially owned shares
- 15,693,820 shares
- Large-stake signal
-
Ownership
13%Beneficial ownership of this reported class.
Shares
15,693,820 sharesShares beneficially owned as disclosed.
Event date
01 Apr 2026Date tied to the ownership event or amendment.
Accepted by SEC
03 Apr 2026EDGAR acceptance date.
How to read this large-stake filing
- Schedule 13D/G filings focus on beneficial ownership stakes, not a full portfolio.
- Compare this filing with the holder history and issuer page before treating the percentage as a current position.
- Use amendments to understand whether the disclosed stake increased, decreased, or changed reporting status.
- Class ownership
- 13%
- Symbol
- ALMS
- Shares outstanding
- 123,573,386 shares
- SEC form
- SCHEDULE 13D/A
- Accepted by SEC
- 03 Apr 2026, 15:51:07 UTC
- Event date
- 01 Apr 2026
- Prior SEC filing
- 12 Jan 2026
- Source filing
- View source filing
Ownership signal
CIK-linked ownership evidence from parsed SEC filings.
2 signals
Subject security
Names, identifiers, and filing context for this profile.
2 source fields
Source evidence
Original filing metadata and source links for verification.
5 source fields
Key filing fact
Foresite Capital Fund VI LP disclosed 13% ownership in Alumis Inc. Common Stock (ALMS) on 01 Apr 2026.
Key facts
- Foresite Capital Fund VI LP filed SCHEDULE 13D/A for Alumis Inc. Common Stock (ALMS).
- Disclosed ownership: 13%.
- Date of event: 01 Apr 2026.
Change
- Previous schedule filing date: 12 Jan 2026.
- Current filing was accepted on 03 Apr 2026, 15:51.
Research use
- This page turns one Schedule 13D/G filing into a quick large-stake read before the raw reporting-person rows.
- Use the linked SEC filing as the source of truth for ownership percentages, shares, and reporting-party details.
Evidence
Backed by Schedule 13D/13G
View source filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting persons
Disclosed reporting parties (12)
Names, ownership percentages, voting power, signatures, titles, and CIKs as disclosed in this Schedule 13D/G filing.
| Name | Ownership | Shares owned | Sole voting power | Shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Foresite Capital Fund VI LP | 3.4% | 4,247,670 | 4,247,670 | 0 | /s/ James B. Tananbaum | James Tananbaum, Managing Member of the General Partner | 0001932516 |
| Foresite Capital Management VI, LLC | 3.4% | 4,247,670 | 4,247,670 | 0 | /s/ James B. Tananbaum | James Tananbaum, Managing Member | 0002013341 |
| Foresite Capital Fund V, L.P. | 4.6% | 5,702,536 | 5,702,536 | 0 | /s/ James B. Tananbaum | James Tananbaum, Managing Member of the General Partner | 0001792204 |
| Labs Co-Invest V, LLC | 0.2% | 194,459 | 194,459 | 0 | /s/ James B. Tananbaum | James Tananbaum, Managing Member of the General Partner | 0001810063 |
| Foresite Capital Management V, LLC | 4.8% | 5,896,995 | 5,896,995 | 0 | /s/ James B. Tananbaum | James Tananbaum, Managing Member | 0001792206 |
| Foresite Capital Opportunity Fund V, L.P. | 2.4% | 2,908,332 | 2,908,332 | 0 | /s/ James B. Tananbaum | James Tananbaum, Managing Member of the General Partner | 0001792205 |
| Foresite Capital Opportunity Management V, LLC | 2.4% | 2,908,332 | 2,908,332 | 0 | /s/ James B. Tananbaum | James Tananbaum, Managing Member | 0001792207 |
| Foresite Labs Fund I, L.P. | 1.6% | 1,960,337 | 1,960,337 | 0 | /s/ James B. Tananbaum | James Tananbaum, Managing Member of the General Partner | 0001848472 |
| Foresite Labs Management I, LLC | 1.6% | 1,960,337 | 1,960,337 | 0 | /s/ James B. Tananbaum | James Tananbaum, Managing Member | 0001848577 |
| Foresite Labs Affiliates 2021, LLC | 0% | 0 | 0 | 0 | /s/ James B. Tananbaum | James Tananbaum, Managing Member of the Manager | 0002028005 |
| Foresite Labs, LLC | 0% | 0 | 0 | 0 | /s/ James B. Tananbaum | James Tananbaum, Manager | 0002027905 |
| James B. Tananbaum | 13% | 15,693,820 | 15,693,820 | 0 | /s/ James B. Tananbaum | James B. Tananbaum | 0001581754 |
CIK / CUSIP context first