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SCHEDULE 13D Filed 2026-04-23 Event 2026-04-20 Intent: STRATEGIC SEC 0001193125-26-173780 →

Illumina Innovation Fund II, L.P. Alamar Biosciences, Inc. ALMR

Stake: 9.60% Shares: 5,856,536 CUSIP: 010911105 Class: Common Stock, par value $0.0001 per share
AI Analyst Brief conf: medium
Illumina's corporate venture arm filed a 13D on ALMR, a small-cap proteomics/biotech play, with no stated purpose disclosed — but the 13D form (vs. 13G) and 2 prior activist filings on this issuer in the last 90 days suggest this is not a passive hold; Illumina may be positioning for influence over a strategic outcome, potentially a takeout or technology partnership given the obvious synergy betwe

Item 4 — Purpose of Transaction

The information set forth in Item 3 of this Statement is incorporated herein by reference. The Reporting Persons hold the securities of the Issuer for general investment purposes. The Reporting Persons may, from time to time, depending on prevailing market, economic and other conditions, acquire additional shares of Common Stock or other securities of the Issuer, dispose of any such securities, or engage in discussions with the Issuer concerning such acquisitions or dispositions or further investments in the Issuer. The Reporting Persons intend to review their investment in the Issuer on a continuing basis and, depending upon the price and availability of shares of Common Stock or other securities of the Issuer, subsequent developments affecting the Issuer, the Issuer's business and prospects, other investment and business opportunities available to the Reporting Persons, general stock market and economic conditions, tax considerations and other factors considered relevant, may decide at any time to increase or to decrease the size of their investment in the Issuer in the open market, in privately negotiated transactions, pursuant to 10b5-1 trading plans or otherwise. Nicholas Naclerio is a member of the Issuer's board of directors. In addition, Nicholas Naclerio, in his capacity as a director, may be entitled to receive cash compensation and equity compensation, including stock option or other equity awards, pursuant to the Issuer's non-employee director compensation policy, which became effective upon the effective date of the Registration Statement (as defined below). Except as set forth above, the Reporting Persons have no present plans or intentions which would result in or relate to any of the transactions described in subparagraphs (a) through (j) of Item 4 of Schedule 13D.

Cross-References

Insider Activity (last 365d)
86 transactions
12 buys · 0 sales · 0 awards/exercises
Issuer Cluster
4 13D/G filings on this issuer
3 other filings besides this one
Filer Track Record
1 filings by this filer
0 other filings in the data moat
Short Interest · settle 2026-07-15
DTC 7.58
2,245,722 shares short · -19.5% vs prior

Post-Filing Returns · since 2026-04-20 on ALMR

+1 day
+5.6%
+5 days
+21.3%
+30 days
+14.7%
+60 days
+14.7%
+90 days
+8.7%
+180 days

Anchor price 22.00 on closest trading day on/after 2026-04-20. Source: Yahoo Finance daily adj_close (split + dividend adjusted).

Form 4 Insider Transactions · last 365d

DateInsiderRoleTypeSharesPriceValue
2026-04-20 Qiming Corporate GP VI, Ltd. 10%+ owner C 185,163
2026-04-20 Illumina Innovation Fund II GP, L.L.C. 10%+ owner C 4,588,364
2026-04-20 Chambers Rebecca director J 140,612 $7.60 $1.07M
2026-04-20 Witney Frank director J 49,627 $0.59 $29K
2026-04-20 White Timothy Ogden officer J 454,583
2026-04-20 Chen Shiping director, officer C 320,511
2026-04-20 Luo Yuling director, officer C 1,386,746
2026-04-20 McAnear Justin J. officer Award 37,220
2026-04-20 Naclerio Nicholas director C 4,588,364
2026-04-20 Illumina Innovation Fund II GP, L.L.C. 10%+ owner C 922,152
2026-04-20 Illumina Innovation Fund II GP, L.L.C. 10%+ owner J 5,510,516
2026-04-20 Illumina Innovation Fund II GP, L.L.C. 10%+ owner C 346,020
2026-04-20 Illumina Innovation Fund II GP, L.L.C. 10%+ owner C 271,782
2026-04-20 Illumina Innovation Fund II GP, L.L.C. 10%+ owner Buy 235,294 $17.00 $4.00M
2026-04-20 Illumina Innovation Fund II GP, L.L.C. 10%+ owner C 3,194,377
2026-04-20 Illumina Innovation Fund II GP, L.L.C. 10%+ owner C 2,862,507
2026-04-20 Illumina Innovation Fund II GP, L.L.C. 10%+ owner C 2,094,266
2026-04-20 Illumina Innovation Fund II GP, L.L.C. 10%+ owner C 5,037,783
2026-04-20 Illumina Innovation Fund II GP, L.L.C. 10%+ owner C
2026-04-20 Qiming Corporate GP VI, Ltd. 10%+ owner C 6,881,410
2026-04-20 Qiming Corporate GP VI, Ltd. 10%+ owner C 1,605,645
2026-04-20 Qiming Corporate GP VI, Ltd. 10%+ owner C 1,922,329
2026-04-20 Qiming Corporate GP VI, Ltd. 10%+ owner J 185,163
2026-04-20 Qiming Corporate GP VI, Ltd. 10%+ owner J 6,881,410
2026-04-20 Qiming Corporate GP VI, Ltd. 10%+ owner J 1,605,645
Showing 25 of 86

Other 13D/G Filings on Alamar Biosciences, Inc.

FiledFormFilerStakeShares
2026-07-07 SCHEDULE 13D/A Sands Capital Life Sciences Pulse Fund II, L.P. 6.10% 4,230,926 view →
2026-07-02 SCHEDULE 13G SHERPA HEALTHCARE FUND II, L.P. view →
2026-04-23 SCHEDULE 13D Sands Capital Life Sciences Pulse Fund II, L.P. 6.30% 4,230,926 view →

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