A fresh Form 4 filing shows Srinivas Akkaraju, an insider at Alumis Inc. (ALMS), purchased 273,291 shares on 2026-09-08 at $10.63 per share, an open-market transaction worth $2,904,290.79. Following the purchase, Akkaraju’s stake stands at 4,937,026 shares, held indirectly through a trust or entity structure rather than in his own name.
The transaction is not an isolated event. It is the third in a run of open-market purchases logged between 2026-09-04 and 2026-09-08, which together total $8,267,413 in insider buying activity over less than a week. Multiple purchases from the same insider clustered in a tight window is the kind of signal our site flags as a ‘cluster buy’ — a classification meant to distinguish repeated, deliberate open-market buying from a single routine transaction.
Why Clustered Buying Draws Attention
Academic research on insider trading disclosures has repeatedly found that clustered purchases — several buys by the same or related insiders within a short period — tend to correlate with above-average subsequent stock performance more reliably than a single isolated purchase. That correlation is a historical pattern observed across large datasets of SEC filings, not a guarantee tied to any individual company or filing. Nothing about this specific disclosure should be read as a forecast or a recommendation to act.
What the filing does establish are the facts: a named insider spending personal funds, at a disclosed price, on three separate occasions within days of each other, adding up to a meaningful seven-figure commitment relative to the size of the trades involved. The shares acquired on September 8 alone represent nearly $2.9 million in capital deployed at $10.63 a share, and the resulting post-transaction ownership of nearly 4.94 million shares (held indirectly) suggests the position is being managed through a trust or affiliated entity rather than a personal brokerage account.
For readers tracking how institutional and insider capital moves around Alumis, our related coverage of SR One Capital Management’s quarterly 13F portfolio moves offers a complementary view from the institutional side, tracking position changes disclosed separately from insider Form 4 filings like this one.
As with all Form 4 disclosures, the underlying SEC filing remains the authoritative source for exact transaction codes, ownership structure, and timing details, and readers are encouraged to consult it directly for the complete record.
→ See all ALMS coverage on WhoIsBuyingNow
Source: original SEC Form 4 filing.