SEC Form 4 reporting owner

Bernstein Harold

Bernstein Harold has filed 39 Form 4 transactions reported between December 29, 2025 and September 4, 2026, as President, R&D & CMO of Maze Therapeutics, Inc..

Name as filed: Bernstein Harold

Open-market buys, 24 mo

None

reported

Open-market sales, 24 mo

$6.6M

23 lines

Companies

with Form 4 filings

Latest transaction

Sep 4, 2026

transaction date

Roles and reported holdings

MAZEMaze Therapeutics, Inc.
Dec 29, 2025 – Sep 4, 2026
President, R&D & CMO
Held directly0 sh as of Sep 4, 2026 · Form 4
24 months: $6.6M sold

Transaction history

All 39 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

Date	Company	Type	Shares	Price	Value	Owned after	Filing
Sep 4, 2026	MAZEPresident, R&D & CMO	Open-market saleCode S · direct	9,705	$26.22	$255K@ $26.22	0	Form 4
Sep 3, 2026	MAZEPresident, R&D & CMO	Open-market saleCode S · direct	59	$25.78	$2K@ $25.78	9,705	Form 4
Sep 3, 2026	MAZEPresident, R&D & CMO	Open-market saleCode S · direct	5,130	$26.01	$133K@ $26.01	9,764	Form 4
Sep 2, 2026	MAZEPresident, R&D & CMO	Open-market saleCode S · direct	625	$27.12	$17K@ $27.12	14,894	Form 4
Sep 2, 2026	MAZEPresident, R&D & CMO	Open-market saleCode S · direct	4,481	$26.38	$118K@ $26.38	15,519	Form 4
Sep 1, 2026	MAZEPresident, R&D & CMO	Option exerciseCode M · direct	20,000	—	—	20,000	Form 4
Sep 1, 2026	MAZEPresident, R&D & CMO	Option exerciseCode M · direct	16,141	$10.42	$168K@ $10.42	16,141	Form 4
Aug 13, 2026	MAZEPresident, R&D & CMO	Option exerciseCode M · direct	16,142	$10.42	$168K@ $10.42	16,142	Form 4
Jul 1, 2026	MAZEPresident, R&D & CMO	Open-market saleCode S · direct	1,200	$30.34	$36K@ $30.34	0	Form 4
Jul 1, 2026	MAZEPresident, R&D & CMO	Open-market saleCode S · direct	13,409	$29.86	$400K@ $29.86	1,200	Form 4
Jul 1, 2026	MAZEPresident, R&D & CMO	Option exerciseCode M · direct	14,609	$10.42	$152K@ $10.42	14,609	Form 4
Jun 1, 2026	MAZEPresident, R&D & CMO	Open-market saleCode S · direct	1,600	$26.36	$42K@ $26.36	0	Form 4
Jun 1, 2026	MAZEPresident, R&D & CMO	Open-market saleCode S · direct	13,253	$25.57	$339K@ $25.57	1,600	Form 4
Jun 1, 2026	MAZEPresident, R&D & CMO	Option exerciseCode M · direct	14,853	$10.42	$155K@ $10.42	14,853	Form 4
May 14, 2026	MAZEPresident, R&D & CMO	Option exerciseCode M · direct	15,000	$10.42	$156K@ $10.42	15,000	Form 4
Apr 1, 2026	MAZEPresident, R&D & CMO	Open-market saleCode S · direct	300	$31.07	$9K@ $31.07	0	Form 4
Apr 1, 2026	MAZEPresident, R&D & CMO	Open-market saleCode S · direct	3,348	$30.06	$101K@ $30.06	300	Form 4
Apr 1, 2026	MAZEPresident, R&D & CMO	Open-market saleCode S · direct	11,352	$29.24	$332K@ $29.24	3,648	Form 4
Apr 1, 2026	MAZEPresident, R&D & CMO	Option exerciseCode M · direct	15,000	$10.42	$156K@ $10.42	15,000	Form 4
Mar 20, 2026	MAZEPresident, R&D & CMO	Open-market saleCode S · direct	5,044	$50.02	$252K@ $50.02	0	Form 4
Mar 20, 2026	MAZEPresident, R&D & CMO	Open-market saleCode S · direct	3,795	$49.32	$187K@ $49.32	5,044	Form 4
Mar 20, 2026	MAZEPresident, R&D & CMO	Open-market saleCode S · direct	6,161	$48.20	$297K@ $48.20	8,839	Form 4
Mar 20, 2026	MAZEPresident, R&D & CMO	Option exerciseCode M · direct	15,000	$10.42	$156K@ $10.42	15,000	Form 4
Mar 10, 2026	MAZEPresident, R&D & CMO	Open-market saleCode S · direct	348	$51.02	$18K@ $51.02	0	Form 4
Mar 10, 2026	MAZEPresident, R&D & CMO	Open-market saleCode S · direct	29,652	$50.45	$1.5M@ $50.45	348	Form 4
Mar 10, 2026	MAZEPresident, R&D & CMO	Option exerciseCode M · direct	30,000	$10.42	$313K@ $10.42	30,000	Form 4
Mar 2, 2026	MAZEPresident, R&D & CMO	Grant or awardCode A · direct	24,000	—	—	24,000	Form 4
Mar 2, 2026	MAZEPresident, R&D & CMO	Grant or awardCode A · direct	48,000	—	—	48,000	Form 4
Feb 2, 2026	MAZEPresident, R&D & CMO	Open-market saleCode S · direct	100	$47.23	$5K@ $47.23	0	Form 4
Feb 2, 2026	MAZEPresident, R&D & CMO	Open-market saleCode S · direct	5,936	$46.37	$275K@ $46.37	100	Form 4
Feb 2, 2026	MAZEPresident, R&D & CMO	Open-market saleCode S · direct	8,364	$45.89	$384K@ $45.89	6,036	Form 4
Feb 2, 2026	MAZEPresident, R&D & CMO	Open-market saleCode S · direct	600	$44.20	$27K@ $44.20	14,400	Form 4
Feb 2, 2026	MAZEPresident, R&D & CMO	Option exerciseCode M · direct	15,000	$10.42	$156K@ $10.42	15,000	Form 4
Jan 7, 2026	MAZEPresident, R&D & CMO	Option exerciseCode M · direct	25,156	$10.42	$262K@ $10.42	25,156	Form 4
Jan 5, 2026	MAZEPresident, R&D & CMO	Option exerciseCode M · direct	412	$10.42	$4K@ $10.42	412	Form 4
Jan 2, 2026	MAZEPresident, R&D & CMO	Option exerciseCode M · direct	4,432	$10.42	$46K@ $10.42	4,432	Form 4
Dec 29, 2025	MAZEPresident, R&D & CMO	Open-market saleCode S · direct	17,200	$40.93	$704K@ $40.93	0	Form 4
Dec 29, 2025	MAZEPresident, R&D & CMO	Open-market saleCode S · direct	27,800	$40.34	$1.1M@ $40.34	17,200	Form 4
Dec 29, 2025	MAZEPresident, R&D & CMO	Option exerciseCode M · direct	45,000	$10.42	$469K@ $10.42	45,000	Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.