Are insiders buying ALMS stock?

Yes — 10 distinct insiders have bought ALMS (ALUMIS INC.) on the open market, including 3 cluster buys where two or more insiders bought within a rolling window. The most recent qualifying activity was Jan 13, 2026.

How much ALMS stock have insiders bought?

Insiders have bought a combined $173.0M of ALMS across 49 open-market purchases, based on SEC Form 4 filings.

What is an insider cluster buy in ALMS?

A cluster buy is two or more distinct ALUMIS INC. insiders — officers, directors, or 10% owners — each buying ALMS on the open market within a rolling window. ALMS has 3 detected cluster buys to date.

Where does this ALMS insider trading data come from?

Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.

ALMS insider buying

3 cluster buys

ALUMIS INC. · Healthcare

When two or more insiders at ALUMIS INC. buy ALMS on the open market around the same time, that clustered conviction is one of the highest-signal patterns in SEC filing data. Below is every cluster we've detected in ALMS plus the full record of qualifying open-market buys, each parsed directly from Form 4 filings and linked back to the source on SEC EDGAR.

Clusters

Distinct insiders

Total bought

$173.0M

Market cap

$3.5B

Detected clusters

Nov 13, 2025 – Jan 9, 2026
Detected Jan 9, 2026
6 insiders
Total bought
$50.9M
Market cap
$3.5B
Apr 1 – May 5, 2025
Detected May 5, 2025
High conviction6 insiders
Total bought
$2.0M
Market cap
$3.5B
Jul 1 – Jul 1, 2024
Detected Jul 1, 2024
3 insiders
Total bought
$120.0M
Market cap
$3.5B

All notable open-market buys in ALMS

Every open-market Form 4 purchase, newest first. Click an insider to see their full buying record across companies.

Date	Insider	Shares	Price	Value	Filing
Jan 9, 2026	AKKARAJU SRINIVAScluster Director	588,235	$17.00	$10.0M	SEC ↗
Jan 8, 2026	Tananbaum James B.cluster Director, 10% Owner	294,117	$17.00	$5.0M	SEC ↗
Jan 8, 2026	Foresite Labs, LLCcluster 10% Owner	294,117	$17.00	$5.0M	SEC ↗
Jan 8, 2026	Foresite Labs Fund I, L.P.cluster 10% Owner	294,117	$17.00	$5.0M	SEC ↗
Jan 8, 2026	Foresite Labs Fund I, L.P.cluster 10% Owner	117,647	$17.00	$2.0M	SEC ↗
Jan 8, 2026	Foresite Labs, LLCcluster 10% Owner	117,647	$17.00	$2.0M	SEC ↗
Jan 8, 2026	Tananbaum James B.cluster Director, 10% Owner	117,647	$17.00	$2.0M	SEC ↗
Dec 5, 2025	AKKARAJU SRINIVAScluster Director	70,028	$10.01	$701.0K	SEC ↗
Dec 5, 2025	AKKARAJU SRINIVAScluster Director	64,969	$8.95	$581.5K	SEC ↗
Dec 5, 2025	AKKARAJU SRINIVAScluster Director	51,380	$10.73	$551.3K	SEC ↗
Dec 4, 2025	AKKARAJU SRINIVAScluster Director	66,027	$8.18	$540.1K	SEC ↗
Dec 3, 2025	AKKARAJU SRINIVAScluster Director	100,000	$7.75	$775.0K	SEC ↗
Dec 2, 2025	AKKARAJU SRINIVAScluster Director	96,000	$7.55	$724.8K	SEC ↗
Dec 1, 2025	AKKARAJU SRINIVAScluster Director	86,350	$7.46	$644.2K	SEC ↗
Nov 28, 2025	AKKARAJU SRINIVAScluster Director	38,702	$7.64	$295.7K	SEC ↗
Nov 26, 2025	AKKARAJU SRINIVAScluster Director	48,537	$7.64	$370.8K	SEC ↗
Nov 21, 2025	Foresite Labs Fund I, L.P.cluster 10% Owner	72,212	$7.38	$532.9K	SEC ↗
Nov 21, 2025	Foresite Labs Affiliates 2021, LLCcluster 10% Owner	72,212	$7.38	$532.9K	SEC ↗
Nov 21, 2025	Tananbaum James B.cluster Director, 10% Owner	72,212	$7.38	$532.9K	SEC ↗
Nov 20, 2025	AKKARAJU SRINIVAScluster Director	125,743	$7.20	$905.3K	SEC ↗
Nov 19, 2025	Foresite Labs Affiliates 2021, LLCcluster 10% Owner	190,500	$6.56	$1.2M	SEC ↗
Nov 19, 2025	Foresite Capital Management VI LLCcluster 10% Owner	190,500	$6.56	$1.2M	SEC ↗
Nov 19, 2025	Tananbaum James B.cluster Director, 10% Owner	190,500	$6.56	$1.2M	SEC ↗
Nov 19, 2025	AKKARAJU SRINIVAScluster Director	137,772	$6.56	$903.8K	SEC ↗
Nov 18, 2025	Foresite Capital Management VI LLCcluster 10% Owner	117,374	$6.19	$726.5K	SEC ↗

24 earlier buys hidden — sign in free to see the full history.

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ALMS insider buying — FAQ

Are insiders buying ALMS stock?: Yes — 10 distinct insiders have bought ALMS (ALUMIS INC.) on the open market, including 3 cluster buys where two or more insiders bought within a rolling window. The most recent qualifying activity was Jan 13, 2026.
How much ALMS stock have insiders bought?: Insiders have bought a combined $173.0M of ALMS across 49 open-market purchases, based on SEC Form 4 filings.
What is an insider cluster buy in ALMS?: A cluster buy is two or more distinct ALUMIS INC. insiders — officers, directors, or 10% owners — each buying ALMS on the open market within a rolling window. ALMS has 3 detected cluster buys to date.
Where does this ALMS insider trading data come from?: Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.

How we track insider buying in ALMS

We continuously poll SEC EDGAR for new Form 4 filings and parse every open-market purchase (transaction code P). A cluster is recorded when two or more distinct insiders — officers, directors, or 10% owners — each buy ALMS within a rolling window. We track clusters at every company size, from micro-caps to mega-caps. Every figure on this page traces back to an official filing; open any row to jump straight to the source document. What counts as a cluster buy?

This page is informational and reflects public filing data. It is not investment advice or a recommendation regarding ALMS.