Exhibit 99.1

CUSIP No. 578784100

JOINT FILING AGREEMENT

Each of the undersigned hereby acknowledges and agrees, in compliance with the provisions of Rule 13d-1(k)(1) promulgated under the Securities Exchange Act of 1934, as amended, that the Statement on Schedule 13G with respect to the Common Stock, par value $0.001 per share, of Maze Therapeutics, Inc., to which this Agreement is attached as an Exhibit, and any amendments thereto, will be filed with the Securities and Exchange Commission jointly on behalf of the undersigned. This Agreement may be executed, either manually or electronically, in one or more counterparts.

GV 2019, L.P.

By:

/s/ Inga Goldbard

Name/Title:

Inga Goldbard/General Counsel of GV 2019 GP, L.L.C., the General Partner of GV 2019 GP, L.P., its General Partner

Dated:

May 9, 2025

GV 2023, L.P.

By:

/s/ Inga Goldbard

Name/Title:

Inga Goldbard/General Counsel of GV 2023 GP, L.L.C., the General Partner of GV 2023 GP, L.P., its General Partner

Dated:

May 9, 2025

GV 2019 GP, L.P.

By:

/s/ Inga Goldbard

Name/Title:

Inga Goldbard/General Counsel of GV 2019 GP, L.L.C., its General Partner

Dated:

May 9, 2025

GV 2023 GP, L.P.

By:

/s/ Inga Goldbard

Name/Title:

Inga Goldbard/General Counsel of GV 2023 GP, L.L.C., its General Partner

Dated:

May 9, 2025

GV 2019 GP, L.L.C.

By:

/s/ Inga Goldbard

Name/Title:

Inga Goldbard/General Counsel

Dated:

May 9, 2025

GV 2023 GP, L.L.C.

By:

/s/ Inga Goldbard

Name/Title:

Inga Goldbard/General Counsel

Dated:

May 9, 2025

ALPHABET HOLDINGS LLC

By:

/s/ Kathryn W. Hall

Name/Title:

Kathryn W. Hall/Secretary

Dated:

May 9, 2025

XXVI HOLDINGS INC.

By:

/s/ Kathryn W. Hall

Name/Title:

Kathryn W. Hall/Assistant Secretary

Dated:

May 9, 2025

ALPHABET INC.

By:

/s/ Kathryn W. Hall

Name/Title:

Kathryn W. Hall/Assistant Secretary

Dated:

May 9, 2025

Maze Therapeutics, Inc. SCHEDULE 13G