Alamar Biosciences, Inc.
Ownership
Ownership Structure
Who owns Alamar Biosciences, Inc. (ALMR)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 52.1% of the shares are freely tradable; institutional investors hold 39.7%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Sands Capital Ventures, LLC | 6.10 | 4,230,926 | +0.0 | 06/30/2026 |
| Samsara BioCapital, LLC | 3.57 | 2,480,310 | +0.0 | 06/30/2026 |
| Hillhouse Capital Advisors, Ltd. | 1.38 | 956,462 | +0.0 | 06/30/2026 |
| Millennium Management LLC | 1.25 | 865,764 | +0.0 | 06/30/2026 |
| PURA VIDA INVESTMENTS, LLC | 1.09 | 755,909 | +0.0 | 06/30/2026 |
| Emerald Advisers, LLC | 0.93 | 647,183 | +0.0 | 06/30/2026 |
| Artisan Partners Limited Partnership | 0.88 | 613,744 | +0.0 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| ARK Genomic Revolution ETF | 1.46 | 1,014,106 | -0.3 | 08/31/2026 |
| T. Rowe Price Small-Cap Stock | 1.41 | 978,364 | +0.0 | 07/31/2026 |
| T. Rowe Price Instl Small-Cap Stock | 0.77 | 532,296 | +0.0 | 07/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Brottem John L. | General Counsel | 29,000 | 988,900 $ | Sep 14, 2026 | direct |
| Ragusa Robert P | Director | 5,686 | 193,893 $ | Sep 1, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 14, 2026 | Brottem John L. | General Counsel | Other | 29,000 | 0.00 | – |
| Sep 1, 2026 | Ragusa Robert P | Director | Other | 5,686 | 0.00 | – |
| Apr 20, 2026 | Innovation Fund Gp Illumina II | Major Shareholder | Buy | 235,294 | 17.00 | 3,999,998 |
| Apr 20, 2026 | Nicholas Naclerio | Director | Buy | 235,294 | 17.00 | 3,999,998 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 30, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.