CCCC documents same-day exercise and sale of 9,087 options

CCCC reported a same-day exercise-and-sale of stock options granted under its 2020 Equity Incentive Plan.

Rhea-AI Filing Summary

CCCC reported a same-day exercise-and-sale of stock options granted under its 2020 Equity Incentive Plan. The filing states 29,080 options were granted on 02/14/2025; of those, 9,087 vested and were exercised and sold pursuant to a same-day sale transaction. The filing lists brokerage details for the transaction.

Insights

Equity Compensation Specialist

Form 144 documents a routine exercise-and-sell of vested option shares under the company's equity plan.

The filing records an option grant of 29,080 options dated 02/14/2025 and shows 9,087 options vested, exercised, and sold in a same-day transaction. This pattern is a common liquidity action tied to option vesting and exercise mechanics.

The cash treatment and exact sale proceeds are not stated in the provided excerpt; subsequent filings or broker confirmations would show proceeds and tax withholding details if required.

Key Figures

Options granted: 29,080 options Options exercised and sold: 9,087 options Filing reference date: 05/27/2026

3 metrics

Options granted 29,080 options Grant dated 02/14/2025 under the 2020 Equity Incentive Plan

Options exercised and sold 9,087 options Vested, exercised, and sold pursuant to a same-day sale transaction

Filing reference date 05/27/2026 Date listed in filer information section

Key Terms

same-day sale, option grant, 2020 Equity Incentive Plan

3 terms

same-day sale financial

"These securities were acquired pursuant to an option grant ... were exercised and sold pursuant to a same-day sale transaction"

option grant financial

"29,080 options were granted on February 14, 2025, of which 9,087 vested and were exercised"

2020 Equity Incentive Plan regulatory

"Grant under Issuer's 2020 Equity Incentive Plan"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did CCCC disclose in the Form 144 filing?

The filing discloses a same-day exercise-and-sale of options: 9,087 options from a 29,080 grant dated 02/14/2025. It lists broker details and indicates the exercise and sale occurred pursuant to the issuer's equity plan.

How many options were originally granted to the filer at CCCC?

The excerpt shows a grant of 29,080 options dated 02/14/2025. The filing ties those options to the company's 2020 Equity Incentive Plan and identifies which portion vested and was transacted.

How many options were exercised and sold in the transaction?

The filing reports that 9,087 options vested and were exercised and sold pursuant to a same-day sale transaction. The excerpt states the sale occurred as part of the exercise event.

Does the Form 144 state the sale proceeds or who received the cash?

The provided excerpt does not state sale proceeds or cash recipients. It documents the exercise-and-sale quantities and broker details; specific proceeds or withholding amounts are not included in the excerpt.

Under which plan were the options granted at CCCC?

The options were granted under the issuer's 2020 Equity Incentive Plan, as stated in the filing. The grant date recorded is 02/14/2025 and the exercised portion is tied to that grant.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/28/2026 - 08:31 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001992219
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	C4 Therapeutics, Inc.
SEC File Number	001-39567
Address of Issuer	490 Arsenal Way Suite 120 Watertown MASSACHUSETTS 2472
Phone	617-231-0700
Name of Person for Whose Account the Securities are To Be Sold	Mark Mossler
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Former Section 16 Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Stock Options	E*Trade 3 Edison Drive Alpharetta GA 30005	9087	35484.74	110567222	05/27/2026	Nasdaq

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Stock Options	02/14/2025	Grant under Issuer's 2020 Equity Incentive Plan	C4 Therapeutics, Inc.			29080	02/14/2025	These securities were acquired pursuant to an option grant under the Issuer's 2020 Equity Incentive Plan. 29,080 options were granted on February 14, 2025, of which 9,087 vested and were exercised and sold pursuant to a same-day sale transaction.

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	05/28/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	Mark Mossler
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)