CDT Environmental gains Jane Street 5.1% stake

Rhea-AI Filing Summary

CDT Environmental Technology Investment Holdings Ltd (CDTG) has a new significant institutional holder. Jane Street Group, LLC, together with its subsidiaries Jane Street Capital, LLC and Jane Street Global Trading, LLC, reported beneficial ownership of 154,512 Class A Ordinary Shares, representing 5.1% of this class.

All reported shares are held with shared voting and dispositive power; none are held with sole voting or dispositive power. Within the group, Jane Street Capital, LLC holds 113,285 shares (3.8% of the class) and Jane Street Global Trading, LLC holds 41,227 shares (1.4% of the class), both under shared voting and dispositive authority.

Key Figures

Beneficially owned shares: 154,512 Class A Ordinary Shares Percent of class owned: 5.1% Jane Street Capital, LLC shares: 113,285 Class A Ordinary Shares +5 more

8 metrics

Beneficially owned shares 154,512 Class A Ordinary Shares Shares of CDTG beneficially owned by Jane Street Group, LLC and subsidiaries

Percent of class owned 5.1% Percent of CDTG Class A Ordinary Shares beneficially owned by Jane Street group

Jane Street Capital, LLC shares 113,285 Class A Ordinary Shares Shares of CDTG beneficially owned by Jane Street Capital, LLC

Jane Street Capital, LLC percent of class 3.8% Percent of CDTG Class A Ordinary Shares held by Jane Street Capital, LLC

Jane Street Global Trading, LLC shares 41,227 Class A Ordinary Shares Shares of CDTG beneficially owned by Jane Street Global Trading, LLC

Jane Street Global Trading, LLC percent of class 1.4% Percent of CDTG Class A Ordinary Shares held by Jane Street Global Trading, LLC

Shared voting power 154,512 shares CDTG shares over which the reporting persons have shared voting power

Shared dispositive power 154,512 shares CDTG shares over which the reporting persons have shared dispositive power

Key Terms

beneficially owned, shared voting power, shared dispositive power, parent holding company, +1 more

5 terms

beneficially owned financial

"Ownership (a) | Amount beneficially owned: 154,512.00"

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.

shared voting power financial

"Shared Voting Power 154,512.00"

Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.

shared dispositive power financial

"Shared Dispositive Power 154,512.00"

parent holding company financial

"If a parent holding company has filed this schedule"

percent of class financial

"Percent of class: 5.1%"

Percent of class is the portion of a specific category of securities—such as a company’s common shares, preferred shares, or a bond series—that takes part in or approves a corporate action (vote, consent, tender, etc.). Investors watch this number because it reveals how much support or opposition exists within that particular shareholder group; like counting how many members of a club back a proposal, it can determine whether a plan passes or how influence is distributed.

FAQ

Who is the new significant shareholder of CDTG disclosed in this Schedule 13G?

The filing identifies Jane Street Group, LLC, along with its subsidiaries Jane Street Capital, LLC and Jane Street Global Trading, LLC, as the group of reporting persons that collectively beneficially own shares of CDT Environmental Technology Investment Holdings Ltd (CDTG).

How many CDTG shares does the Jane Street group beneficially own?

The Jane Street group reported beneficial ownership of 154,512 Class A Ordinary Shares of CDTG. All of these shares are held with shared voting and shared dispositive power and none with sole voting or dispositive power.

What percentage of CDTG’s Class A Ordinary Shares is owned by the Jane Street group?

The reporting persons stated that they beneficially own 5.1% of CDTG’s Class A Ordinary Shares. This percentage reflects the 154,512 shares that the group reports as beneficially owned with shared voting and dispositive power.

How are CDTG shares allocated between Jane Street Capital, LLC and Jane Street Global Trading, LLC?

Within the group, Jane Street Capital, LLC reported 113,285 CDTG shares, or 3.8% of the class, while Jane Street Global Trading, LLC reported 41,227 shares, or 1.4% of the class, each with shared voting and dispositive power.

Does Jane Street have sole or shared voting power over its CDTG holdings?

The reporting persons indicated 0 shares with sole voting power and 154,512 shares with shared voting power. They also reported 0 shares with sole dispositive power and 154,512 shares with shared dispositive power over CDTG stock.

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

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Available on EDGAR 08/21/2026 - 04:49 PM Accepted by SEC EDGAR 08/21/2026 - 04:48 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

CDT Environmental Technology Investment Holdings Ltd

(Name of Issuer)

Class A Ordinary Shares, par value $0.0025 per share

(Title of Class of Securities)

G2030P115

(CUSIP Number)

08/17/2026

(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): G2030P115

1

Names of Reporting Persons

JANE STREET GROUP, LLC

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 0.00
6	Shared Voting Power 154,512.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 154,512.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

154,512.00

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)

5.1 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

CUSIP Number(s): G2030P115

1

Names of Reporting Persons

Jane Street Capital, LLC

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 0.00
6	Shared Voting Power 113,285.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 113,285.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

113,285.00

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)

3.8 %

12

Type of Reporting Person (See Instructions)

BD

SCHEDULE 13G

CUSIP Number(s): G2030P115

1

Names of Reporting Persons

Jane Street Global Trading, LLC

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 0.00
6	Shared Voting Power 41,227.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 41,227.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

41,227.00

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)

1.4 %

12

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13G

Item 1.
(a)	Name of issuer: CDT Environmental Technology Investment Holdings Ltd
(b)	Address of issuer's principal executive offices: C1, 4TH FLOOR, BUILDING 1,, FINANCIAL BASE, NO.8 KEFA ROAD, NANSHAN DISTRICT, CHINA, 518057.
Item 2.
(a)	Name of person filing: Jane Street Group, LLC; Jane Street Capital, LLC; Jane Street Global Trading, LLC;
(b)	Address or principal business office or, if none, residence: Jane Street Group, LLC 250 Vesey Street 3rd Floor New York, NY 10281 Jane Street Capital, LLC 250 Vesey Street 3rd Floor New York, NY 10281 Jane Street Global Trading, LLC 250 Vesey Street 3rd Floor New York, NY 10281
(c)	Citizenship: See Item 4 of Cover Page
(d)	Title of class of securities: Class A Ordinary Shares, par value $0.0025 per share
(e)	CUSIP Number(s): G2030P115
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: 154,512.00
(b)	Percent of class: 5.1%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0
	(ii) Shared power to vote or to direct the vote: 154,512.00
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 154,512.00
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
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.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. Subsidiary Jane Street Capital, LLC Jane Street Global Trading, LLC
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 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.

JANE STREET GROUP, LLC

Signature:	/s/ Jeremy Kahn
Name/Title:	Jeremy Kahn (Authorized Signatory)
Date:	08/21/2026

Jane Street Capital, LLC

Signature:	/s/ Jeremy Kahn
Name/Title:	Jeremy Kahn (Authorized Signatory)
Date:	08/21/2026

Jane Street Global Trading, LLC

Signature:	/s/ Jeremy Kahn
Name/Title:	Jeremy Kahn (Authorized Signatory)
Date:	08/21/2026