HRT Financial sells 2,052 CDT Environmental shares

CDT Environmental Technology Investment Holdings Ltd (CDTG) reported that major shareholder HRT FINANCIAL LP disclosed a sale of 2,052 shares of common stock on 2026-08-21 at $1.36 per share in an open market or private transaction.

Rhea-AI Filing Summary

CDT Environmental Technology Investment Holdings Ltd (CDTG) reported that major shareholder HRT FINANCIAL LP disclosed a sale of 2,052 shares of common stock on 2026-08-21 at $1.36 per share in an open market or private transaction. Following this transaction, the reporting person shows 9,039 shares directly held, with a footnote stating this resulting position is from a short sale. A separate footnote states that full trade-by-trade price information will be provided upon request.

Insider Trade Summary

Net Seller: 2,052 shares

Net Sell 1 txn

Insider HRT FINANCIAL LP

Role 10% Owner

Sold 2,052 shs ($3K)

Type	Security	Shares	Price	Value
Sale	Common Stock F2, F1	2,052	$1.36	$3K

Holdings After Transaction: Common Stock — 9,039 shares (Direct)

Footnotes (2)

1. F1. Resulting from a short sale.
2. F2. We will provide, upon request by the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price.

Key Figures

Shares sold: 2,052 shares Sale price per share: $1.36 per share Shares following transaction: 9,039 shares +1 more

4 metrics

Shares sold 2,052 shares Common Stock sold by HRT FINANCIAL LP on 2026-08-21

Sale price per share $1.36 per share Price for 2,052 shares of Common Stock sold on 2026-08-21

Shares following transaction 9,039 shares Directly held Common Stock reported after the sale, resulting from a short sale

Net buy/sell shares -2,052 shares Net share change across all reported transactions in this Form 4

Key Terms

short sale, ten percent owner, Form 4

3 terms

short sale financial

"Resulting from a short sale."

A short sale is when an investor borrows shares they do not own, sells them now, and aims to buy them back later at a lower price to return to the lender, pocketing the difference. It matters to investors because it expresses a bet that a stock will fall, can increase volatility and trading volume, and carries the risk of large losses if the stock instead rises—similar to selling a borrowed item hoping its price drops before you must replace it.

ten percent owner regulatory

"HRT FINANCIAL LP is reported as a ten percent owner"

Form 4 regulatory

"HRT FINANCIAL LP reported this transaction on Form 4"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

FAQ

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

What insider transaction did CDTG report in this Form 4?

The filing reports that HRT FINANCIAL LP sold 2,052 shares of CDT Environmental Technology Investment Holdings Ltd common stock on 2026-08-21 in a transaction coded as a sale in an open market or private transaction.

At what price were the CDTG shares sold by HRT FINANCIAL LP?

The reported sale price was $1.36 per share for the 2,052 shares of CDT Environmental Technology Investment Holdings Ltd common stock sold on 2026-08-21.

How many CDTG shares does HRT FINANCIAL LP report holding after the transaction?

After the 2,052-share sale, HRT FINANCIAL LP reports 9,039 shares of CDT Environmental Technology Investment Holdings Ltd common stock held directly, with a footnote stating this resulting position is from a short sale.

Does the CDTG Form 4 indicate the transaction was under a Rule 10b5-1 plan?

No. The document-level Rule 10b5-1 checkbox is unchecked (aff_10b5_one is false), and the footnotes do not state that the 2,052-share sale in CDTG was executed under a Rule 10b5-1 trading plan.

What do the footnotes in the CDTG Form 4 disclosure explain?

One footnote states the post-transaction position of 9,039 shares results from a short sale. Another explains that HRT FINANCIAL LP will provide, upon request, full information on the number of shares purchased or sold at each separate price.

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

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Available on EDGAR 08/25/2026 - 03:56 PM EDT Accepted by SEC EDGAR 08/25/2026 - 03:56 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED 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

X

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

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^*

HRT FINANCIAL LP

(Last) (First) (Middle)

3 WORLD TRADE CENTER, 175 GREENWICH STRE

76TH FLOOR

(Street)

NEW YORK NEW YORK 10007

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
CDT Environmental Technology Investment Holdings Ltd [ CDTG ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/20/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form 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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	08/21/2026		S		2,052	D	$1.36(2)	9,039(1)	D

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Resulting from a short sale.

2. We will provide, upon request by the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price.

	Adam Nunes	08/25/2026
	** Signature of Reporting Person	Date
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)