STOCK TITAN

Maze Therapeutics (MAZE) CSBO sells 7,500 shares under Rule 10b5-1 plan

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Maze Therapeutics CSBO Atul Dandekar executed an option exercise and share sale. On June 29, he exercised 7,500 stock options at $10.42 per share and sold 7,500 shares of common stock at $28.02 per share in an open-market transaction.

These trades were made under a pre-arranged Rule 10b5-1 trading plan. Following the sale, he holds 26,250 shares of common stock directly, including 1,442 shares acquired through the company’s Employee Stock Purchase Plan.

Positive

  • None.

Negative

  • None.
Insider Dandekar Atul
Role CSBO
Sold 7,500 shs ($210K)
Type Security Shares Price Value
Exercise Stock Option (Right to Buy) 7,500 $0.00 --
Exercise Common Stock 7,500 $10.42 $78K
Sale Common Stock 7,500 $28.02 $210K
Holdings After Transaction: Stock Option (Right to Buy) — 29,143 shares (Direct, null); Common Stock — 33,750 shares (Direct, null)
Footnotes (1)
  1. This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 29, 2025. The reported total includes 1,442 shares of the Issuer's Common Stock acquired by the reporting person in one or more transactions with the Issuer pursuant to its Employee Stock Purchase Plan, which transactions are exempt pursuant to Rules 16a3(f)(1)(i)(B) and 16b3(c). The option is fully vested. Pursuant to the terms of the reporting person's award agreement with the Issuer, the award became fully vested on March 17, 2025.
Shares sold 7,500 shares Common Stock sold on June 29 at $28.02 per share
Sale price $28.02/share Price for 7,500 Maze Therapeutics common shares sold
Options exercised 7,500 shares Stock options exercised into common stock on June 29
Exercise price $10.42/share Conversion or exercise price of stock options
Shares held after 26,250 shares Direct Maze Therapeutics common stock holdings after transactions
Options position after 29,143 options Stock Option (Right to Buy) total following derivative transaction
Rule 10b5-1 trading plan regulatory
"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person"
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
Employee Stock Purchase Plan financial
"shares of the Issuer's Common Stock acquired by the reporting person pursuant to its Employee Stock Purchase Plan"
An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.
Stock Option (Right to Buy) financial
"Stock Option (Right to Buy) listed as a derivative security with an expiration date in 2031"
open-market sale financial
"transaction_action is described as an open-market sale of common stock"
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
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Learn about SEC filing dates
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
X
Check this box to indicate that a 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). See Instruction 10.
1. Name and Address of Reporting Person*
Dandekar Atul

(Last)(First)(Middle)
C/O MAZE THERAPEUTICS, INC.
171 OYSTER POINT BOULEVARD, SUITE 300

(Street)
SOUTH SAN FRANCISCO CALIFORNIA 94080

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Maze Therapeutics, Inc. [ MAZE ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
CSBO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
06/29/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock06/29/2026M(1)7,500A$10.4233,750(2)D
Common Stock06/29/2026S(1)7,500D$28.0226,250D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option (Right to Buy)$10.4206/29/2026M(1)7,500 (3)04/11/2031Common Stock7,500$029,143D
Explanation of Responses:
1. This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 29, 2025.
2. The reported total includes 1,442 shares of the Issuer's Common Stock acquired by the reporting person in one or more transactions with the Issuer pursuant to its Employee Stock Purchase Plan, which transactions are exempt pursuant to Rules 16a3(f)(1)(i)(B) and 16b3(c).
3. The option is fully vested. Pursuant to the terms of the reporting person's award agreement with the Issuer, the award became fully vested on March 17, 2025.
/s/ Courtney Phillips, as attorney-in-fact07/01/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What did Maze Therapeutics (MAZE) CSBO Atul Dandekar do in this Form 4?

Maze Therapeutics CSBO Atul Dandekar exercised 7,500 stock options and sold 7,500 common shares. Both transactions occurred on June 29 and were reported as an option exercise followed by an open-market sale under a pre-arranged Rule 10b5-1 trading plan.

How many Maze Therapeutics (MAZE) shares did the CSBO sell and at what price?

Atul Dandekar sold 7,500 shares of Maze Therapeutics common stock at an average price of $28.02 per share. The transaction was classified as an open-market or private sale and was executed pursuant to a Rule 10b5-1 trading plan.

What options did the Maze Therapeutics (MAZE) CSBO exercise in this filing?

He exercised stock options for 7,500 shares of Maze Therapeutics common stock at an exercise price of $10.42 per share. The filing notes the option award was fully vested, with vesting completed on March 17, 2025, before this transaction.

How many Maze Therapeutics (MAZE) shares does the CSBO hold after these transactions?

After the June 29 transactions, Atul Dandekar directly holds 26,250 shares of Maze Therapeutics common stock. This reported total includes 1,442 shares acquired through the company’s Employee Stock Purchase Plan in exempt transactions with the issuer.

Were the Maze Therapeutics (MAZE) insider transactions pre-planned under Rule 10b5-1?

Yes. The filing states the sale transaction was effected under a Rule 10b5-1 trading plan adopted by Atul Dandekar on September 29, 2025. Such plans schedule trades in advance, making the timing more routine and less discretionary.

What does the Employee Stock Purchase Plan mention mean for Maze Therapeutics (MAZE) shares?

The filing notes that 1,442 Maze Therapeutics shares in the CSBO’s total were bought through the Employee Stock Purchase Plan. These purchases were treated as exempt under specific SEC rules, reflecting regular employee participation rather than open-market trading.