STOCK TITAN

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

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

Rhea-AI Filing Summary

Maze Therapeutics, Inc. chief business officer Atul Dandekar exercised stock options for 7,500 shares of common stock at $10.42 per share and on the same day sold 7,500 shares in an open-market transaction at a weighted average price of $25.3732 per share. Following these transactions, he directly holds 10,503 shares of Maze common stock. The sale was carried out under a pre-arranged Rule 10b5-1 trading plan, indicating the timing was set in advance rather than decided opportunistically.

Positive

  • None.

Negative

  • None.
Insider Dandekar Atul
Role CSBO
Sold 7,500 shs ($190K)
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 $25.3732 $190K
Holdings After Transaction: Stock Option (Right to Buy) — 44,143 shares (Direct, null); Common Stock — 18,003 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 price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25.08 to $25.77 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 range set forth in this footnote. 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 Open-market sale of common stock
Sale price (weighted average) $25.3732 per share Common stock sale on April 29, 2026
Sale price range $25.08–$25.77 per share Range of individual trade prices
Options exercised 7,500 shares Stock option exercise converting to common stock
Option exercise price $10.42 per share Stock Option (Right to Buy) conversion price
Shares held after 10,503 shares Direct Maze common stock holdings post-transaction
Net buy/sell shares -7,500 shares Net from reported buy/sell transactions
Rule 10b5-1 plan adoption date September 29, 2025 Date trading plan was adopted
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.
weighted average price financial
"The reported price in Column 4 is a weighted average price"
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
Stock Option (Right to Buy) financial
"Stock Option (Right to Buy) listed as a derivative security"
exercise or conversion of derivative security financial
"transaction_code_description: Exercise or conversion of derivative security"
open-market sale financial
"transaction_action: open-market sale for the common stock transaction"
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.
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)
04/29/2026
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 Stock04/29/2026M(1)7,500A$10.4218,003D
Common Stock04/29/2026S(1)7,500D$25.3732(2)10,503D
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)$10.4204/29/2026M(1)7,500 (3)04/11/2031Common Stock7,500$044,143D
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 price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25.08 to $25.77 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 range set forth in this footnote.
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-fact05/01/2026
** 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) executive Atul Dandekar report on this Form 4?

Atul Dandekar reported exercising stock options for 7,500 Maze Therapeutics common shares at $10.42 each, then selling 7,500 shares in the open market. These combined transactions left his direct holdings at 10,503 Maze common shares after the reported date.

How many Maze Therapeutics (MAZE) shares did Atul Dandekar sell and at what price?

He sold 7,500 Maze Therapeutics common shares in an open-market transaction at a weighted average price of $25.3732 per share. The filing notes individual trades occurred between $25.08 and $25.77 per share across multiple executions that day.

What stock option exercise did Atul Dandekar report for Maze Therapeutics (MAZE)?

He exercised a stock option covering 7,500 Maze Therapeutics common shares at an exercise price of $10.42 per share. The option was fully vested, with vesting completed on March 17, 2025, before the reported transactions occurred.

How many Maze Therapeutics (MAZE) shares does Atul Dandekar hold after these transactions?

After exercising options and selling shares, Atul Dandekar directly holds 10,503 Maze Therapeutics common shares. This reflects his position immediately following the reported exercise-and-sale sequence on April 29, 2026, as disclosed in the Form 4 filing.

Was Atul Dandekar’s sale of Maze Therapeutics (MAZE) shares under a Rule 10b5-1 plan?

Yes. The Form 4 states the sale was effected under a Rule 10b5-1 trading plan adopted on September 29, 2025. Such pre-arranged plans schedule trades in advance, reducing the significance of short-term market conditions in the timing.

What type of transaction pattern does the Maze Therapeutics (MAZE) Form 4 show?

The filing shows an exercise-and-sell pattern: options for 7,500 Maze shares were exercised at $10.42, and 7,500 shares were then sold. This effectively converts an existing option position into cash, while leaving his direct share count unchanged versus before the exercise.