Wasatch holds 4.7% stake in C4 Therapeutics (CCCC) via Schedule 13G/A

Rhea-AI Filing Summary

C4 Therapeutics Inc Schedule 13G/A amendment shows Wasatch Advisors beneficially owned 4,581,761 shares of common stock, representing 4.7% of the class as reported. The filing lists sole voting and sole dispositive power over the same 4,581,761 shares. Signature date is 04/22/2026.

Insights

Institutional Ownership Analyst

Wasatch holds a sub-5% passive stake in C4 Therapeutics.

Wasatch Advisors reports beneficial ownership of 4,581,761 shares, equal to 4.7% of common stock with sole voting and dispositive power. This places Wasatch below the 5% threshold that often distinguishes Schedule 13G from 13D reporting dynamics.

Institutional holdings at this level are a common ownership disclosure; subsequent filings would show increases or decreases. Changes in stake size or additional disclosures would appear in future amendments.

Key Figures

Beneficial ownership: 4,581,761 shares Percent of class: 4.7% CUSIP: 12529R107 +3 more

6 metrics

Beneficial ownership 4,581,761 shares reported on Schedule 13G/A amendment

Percent of class 4.7% percent of common stock beneficially owned

CUSIP 12529R107 issuer C4 Therapeutics Inc common stock

Sole voting power 4,581,761 shares shares with sole power to vote

Sole dispositive power 4,581,761 shares shares with sole power to dispose

Signature date 04/22/2026 date signature executed on amendment

Key Terms

Schedule 13G/A, Beneficially owned, Sole dispositive power

3 terms

Schedule 13G/A regulatory

"Schedule 13G/A amendment No. 6 reporting beneficial ownership"

A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.

Beneficially owned financial

"Amount beneficially owned: 4,581,761 (b) Percent of class: 4.7 %"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

Sole dispositive power regulatory

"Sole power to dispose or to direct the disposition of: 4,581,761"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

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Accepted by SEC EDGAR 04/22/2026 - 05:27 PM Learn about SEC filing dates

FAQ

What stake does Wasatch Advisors report in C4 Therapeutics (CCCC)?

Wasatch Advisors reports beneficial ownership of 4,581,761 shares, equal to 4.7% of C4 Therapeutics' common stock. The filing indicates sole voting and sole dispositive power over those shares.

Which filing reports Wasatch Advisors' ownership of C4 Therapeutics?

The position is reported in a Schedule 13G/A (Amendment No. 6). That form is used to report passive institutional ownership and amendments to prior 13G disclosures.

What voting and disposition rights does Wasatch hold?

Wasatch Advisors holds sole voting power of 4,581,761 shares and sole dispositive power of the same amount, with no shared powers reported in the filing.

As of what date is the ownership reported?

The filing lists an internal date of 03/31/2026 and the signature date is 04/22/2026. The ownership amount is shown in the Schedule 13G/A amendment.

Does the Schedule 13G/A indicate Wasatch intends to change its position?

The filing lists the reported ownership and control powers only. It does not state any intention to acquire or dispose of shares or change the position in the amendment.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 6)

C4 Therapeutics Inc

(Name of Issuer)

COM STK

(Title of Class of Securities)

12529R107

(CUSIP Number)

03/31/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 12529R107

1

Names of Reporting Persons

Wasatch Advisors LP

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 4,581,761.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 4,581,761.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

4,581,761.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

4.7 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: C4 Therapeutics Inc
(b)	Address of issuer's principal executive offices: 490 ARSENAL WAY, SUITE 120, WATERTOWN, MA, 02472
Item 2.
(a)	Name of person filing: Wasatch Advisors LP
(b)	Address or principal business office or, if none, residence: 505 Wakara Way, 3rd Floor, Salt Lake City, 84108, United States
(c)	Citizenship: DELAWARE
(d)	Title of class of securities: COM STK
(e)	CUSIP No.: 12529R107
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 4,581,761
(b)	Percent of class: 4.7 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 4,581,761
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 4,581,761
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Wasatch Advisors LP

Signature:	Mike Yeates
Name/Title:	CEO
Date:	04/22/2026