Harold Bernstein - 10 Mar 2026 Form 4 Insider Report for Maze Therapeutics, Inc. (MAZE)

Role
President, R&D & CMO
Signature
/s/ Courtney Phillips, as attorney-in-fact
Issuer symbol
MAZE
Transactions as of
10 Mar 2026
Net transactions value
-$1,513,560
Form type
4
Filing time
12 Mar 2026, 16:51:12 UTC
Previous filing
03 Mar 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Bernstein Harold President, R&D & CMO C/O MAZE THERAPEUTICS, INC., 171 OYSTER POINT BOULEVARD, SUITE 300, SOUTH SAN FRANCISCO /s/ Courtney Phillips, as attorney-in-fact 12 Mar 2026 0002050172

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MAZE Common Stock Options Exercise +30,000 $10.42* 30,000 10 Mar 2026 Direct F1
transaction MAZE Common Stock Sale $1,495,807 -29,652 -99% $50.45 348 10 Mar 2026 Direct F1, F2
transaction MAZE Common Stock Sale $17,753 -348 -100% $51.02 0 10 Mar 2026 Direct F1, F3

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction MAZE Stock Option (Right to Buy) Options Exercise -30,000 -10% $0.000000* 267,407 10 Mar 2026 Common Stock 30,000 $10.42 Direct F1, F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 29, 2025.
F2 The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $50.00 to $50.99 per share, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote and in footnote 3 of this Form 4.
F3 The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $51.00 to $51.09 per share, inclusive.
F4 The option vested as to 1/4th of the total award on October 3, 2023, and thereafter vested or vests as to 1/48th of the total award on the monthly anniversary thereof, subject to the reporting person's continued service to the Issuer on each vesting date.