Maze Therapeutics's three largest insider shareholders as of August 29, 2026 are Rock Ventures Iv, L.P. Third (TenPercentOwner, 4.47Mn shares), Rock Ventures Iv, L.P. Third (TenPercentOwner, 4.47Mn shares), Rock Ventures Iv, L.P. Third (TenPercentOwner, 950.80K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Rock Ventures Iv, L.P. Third | TenPercentOwner | 4,473,958 | 0 | 4,473,958 | 87.2% | 05 Nov, 2025 |
| 2 | Jonathan E Lim | Director | 0 | 307,956 | 307,956 | 6.0% | 04 Feb, 2025 |
| 3 | Jason V Coloma | Chief Executive Officer | 0 | 276,007 | 276,007 | 5.4% | 05 Aug, 2026 |
| 4 | Charles J Homcy | Director | 31,113 | 0 | 31,113 | 0.6% | 06 May, 2026 |
| 5 | Atul Dandekar | Csbo | 26,250 | 0 | 26,250 | 0.5% | 31 Aug, 2026 |
| 6 | Amy Bachrodt | Svp, Finance | 12,965 | 0 | 12,965 | 0.3% | 02 Apr, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 28 Aug, 2026 | Atul Dandekar | Csbo | Acquired M | 7,500 | $10.42 | $78.15K | 33,750 | Direct |
| 28 Aug, 2026 | Atul Dandekar | Csbo | Disposed S | 7,500 | $27.58 | $206.82K | 26,250 | Direct |
| 28 Aug, 2026 | Atul Dandekar | Csbo | Disposed M | 7,500 | $0.00 | $0 | 14,143 | Direct |
| 13 Aug, 2026 | Sophie Kornowski | Director | Acquired A | 36,000 | $0.00 | $0 | 36,000 | Direct |
| 13 Aug, 2026 | Sophie Kornowski | Director | Acquired A | 36,000 | $0.00 | $0 | 36,000 | Direct |
| 13 Aug, 2026 | Paula A Johnson | Director | Acquired A | 36,000 | $0.00 | $0 | 36,000 | Direct |
| 13 Aug, 2026 | Paula A Johnson | Director | Acquired A | 36,000 | $0.00 | $0 | 36,000 | Direct |
| 13 Aug, 2026 | Harold Bernstein | President, Rd Cmo | Acquired M | 16,142 | $10.42 | $168.20K | 16,142 | Direct |
| 13 Aug, 2026 | Harold Bernstein | President, Rd Cmo | Disposed S | 16,142 | $27.61 | $445.62K | 0 | Direct |
| 13 Aug, 2026 | Harold Bernstein | President, Rd Cmo | Disposed M | 16,142 | $0.00 | $0 | 176,803 | Direct |
| 03 Aug, 2026 | Jason V Coloma | Chief Executive Officer | Disposed S | 2,439 | $26.71 | $65.16K | 20,898 | Indirect |
| 03 Aug, 2026 | Jason V Coloma | Chief Executive Officer | Disposed S | 154 | $27.09 | $4.17K | 20,744 | Indirect |
| 03 Aug, 2026 | Jason V Coloma | Chief Executive Officer | Disposed S | 30,304 | $26.71 | $809.54K | 256,867 | Indirect |
| 03 Aug, 2026 | Jason V Coloma | Chief Executive Officer | Disposed S | 1,604 | $27.09 | $43.44K | 255,263 | Indirect |
| 29 Jul, 2026 | Atul Dandekar | Csbo | Acquired M | 7,500 | $10.42 | $78.15K | 33,750 | Direct |
| 29 Jul, 2026 | Atul Dandekar | Csbo | Disposed S | 7,100 | $27.31 | $193.88K | 26,650 | Direct |
| 29 Jul, 2026 | Atul Dandekar | Csbo | Disposed S | 400 | $27.89 | $11.16K | 26,250 | Direct |
| 29 Jul, 2026 | Atul Dandekar | Csbo | Disposed M | 7,500 | $0.00 | $0 | 21,643 | Direct |
| 01 Jul, 2026 | Harold Bernstein | President, Rd Cmo | Acquired M | 14,609 | $10.42 | $152.23K | 14,609 | Direct |
| 01 Jul, 2026 | Jason V Coloma | Chief Executive Officer | Disposed S | 2,593 | $29.98 | $77.73K | 23,337 | Indirect |