Maze Therapeutics, Inc.
Ownership
Ownership Structure
Who owns Maze Therapeutics, Inc. (MAZE)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 66.2% of the shares are freely tradable; institutional investors hold 95.6%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Frazier Life Sciences Management, L.P. | 8.22 | 4,567,274 | +0.0 | 03/31/2026 |
| TRV GP IV, LLC | 8.05 | 4,473,958 | +0.0 | 06/30/2026 |
| ARCH VENTURE CORP | 7.42 | 4,120,053 | +0.0 | 06/30/2026 |
| Deep Track Capital, LP | 6.72 | 3,732,569 | +7.3 | 06/30/2026 |
| HHG PLC | 5.15 | 2,858,876 | -9.0 | 03/31/2026 |
| BlackRock Inc | 4.63 | 2,570,425 | +12.4 | 03/31/2026 |
| Logos Global Management LP | 3.48 | 1,935,000 | +56.7 | 06/30/2026 |
| VR Adviser, LLC | 2.88 | 1,602,034 | +3.5 | 03/31/2026 |
| Vanguard Capital Management, LLC | 2.58 | 1,435,656 | +0.0 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 2.54 | 1,411,990 | +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 |
|---|---|---|---|---|---|
| Coloma Jason V | Chief Executive Officer | 268,868 | 6,049,530 $ | Sep 1, 2026 | both |
| Dandekar Atul | CSBO | 32,316 | 727,110 $ | Sep 3, 2026 | direct |
| Courtney Phillips | GC and Corp. Secretary | 7,007 | 157,658 $ | Sep 3, 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 4, 2026 | Bernstein Harold | President, R&D & CMO | Sell | 9,705 | 26.22 | 254,502 |
| Sep 3, 2026 | Bernstein Harold | President, R&D & CMO | Sell | 59 | 25.78 | 1,521 |
| Sep 3, 2026 | Bernstein Harold | President, R&D & CMO | Sell | 5,130 | 26.01 | 133,448 |
| Sep 3, 2026 | Dandekar Atul | CSBO | Sell | 36 | 25.81 | 929 |
| Sep 3, 2026 | Dandekar Atul | CSBO | Sell | 3,207 | 26.01 | 83,425 |
| Sep 3, 2026 | Courtney Phillips | GC and Corp. Secretary | Sell | 22 | 25.78 | 567 |
| Sep 3, 2026 | Courtney Phillips | GC and Corp. Secretary | Sell | 1,990 | 26.01 | 51,766 |
| Sep 3, 2026 | Coloma Jason V | Chief Executive Officer | Sell | 129 | 25.77 | 3,325 |
| Sep 3, 2026 | Coloma Jason V | Chief Executive Officer | Sell | 11,282 | 26.01 | 293,482 |
| Sep 2, 2026 | Bernstein Harold | President, R&D & CMO | Sell | 625 | 27.12 | 16,951 |
| Sep 2, 2026 | Bernstein Harold | President, R&D & CMO | Sell | 4,481 | 26.38 | 118,191 |
| Sep 2, 2026 | Dandekar Atul | CSBO | Sell | 391 | 27.12 | 10,604 |
| Sep 2, 2026 | Dandekar Atul | CSBO | Sell | 2,800 | 26.38 | 73,853 |
| Sep 2, 2026 | Courtney Phillips | GC and Corp. Secretary | Sell | 243 | 27.12 | 6,590 |
| Sep 2, 2026 | Courtney Phillips | GC and Corp. Secretary | Sell | 1,738 | 26.38 | 45,841 |
| Sep 2, 2026 | Coloma Jason V | Chief Executive Officer | Sell | 1,375 | 27.12 | 37,292 |
| Sep 2, 2026 | Coloma Jason V | Chief Executive Officer | Sell | 9,852 | 26.38 | 259,856 |
| Sep 1, 2026 | Bernstein Harold | President, R&D & CMO | Other | 20,000 | 0.00 | – |
| Sep 1, 2026 | Bernstein Harold | President, R&D & CMO | Sell | 16,141 | 26.36 | 425,512 |
| Sep 1, 2026 | Bernstein Harold | President, R&D & CMO | Other | 16,141 | 10.42 | 168,189 |
| Sep 1, 2026 | Dandekar Atul | CSBO | Other | 12,500 | 0.00 | – |
| Sep 1, 2026 | Courtney Phillips | GC and Corp. Secretary | Other | 11,000 | 0.00 | – |
| Sep 1, 2026 | Coloma Jason V | Chief Executive Officer | Other | 50,000 | 0.00 | – |
| Sep 1, 2026 | Coloma Jason V | Chief Executive Officer | Sell | 31,908 | 26.29 | 838,785 |
| Sep 1, 2026 | Coloma Jason V | Chief Executive Officer | Sell | 2,593 | 26.31 | 68,214 |
| Aug 28, 2026 | Dandekar Atul | CSBO | Sell | 7,500 | 27.58 | 206,824 |
| Aug 28, 2026 | Dandekar Atul | CSBO | Other | 7,500 | 10.42 | 78,150 |
| Aug 13, 2026 | Bernstein Harold | President, R&D & CMO | Sell | 16,142 | 27.61 | 445,621 |
| Aug 13, 2026 | Bernstein Harold | President, R&D & CMO | Other | 16,142 | 10.42 | 168,200 |
| Aug 3, 2026 | Coloma Jason V | Chief Executive Officer | Sell | 1,604 | 27.09 | 43,445 |
| Aug 3, 2026 | Coloma Jason V | Chief Executive Officer | Sell | 30,304 | 26.71 | 809,541 |
| Aug 3, 2026 | Coloma Jason V | Chief Executive Officer | Sell | 154 | 27.09 | 4,172 |
| Aug 3, 2026 | Coloma Jason V | Chief Executive Officer | Sell | 2,439 | 26.71 | 65,157 |
| Jul 29, 2026 | Dandekar Atul | CSBO | Sell | 400 | 27.89 | 11,156 |
| Jul 29, 2026 | Dandekar Atul | CSBO | Sell | 7,100 | 27.31 | 193,875 |
| Jul 29, 2026 | Dandekar Atul | CSBO | Other | 7,500 | 10.42 | 78,150 |
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 18, 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.