CECO Environmental (CECO) officer reports 890-share tax withholding at $79.03

Rhea-AI Filing Summary

On 2026-07-15, CECO Environmental Corp’s Chief Human Resources Officer Candace Harris-Peterson had 890 shares of common stock withheld at $79.03 per share to cover tax liability from vesting restricted stock units via net settlement. After this tax-withholding disposition, she directly holds 21,101 CECO shares.

Insider Trade Summary

Net Seller: 890 shares

Net Sell 1 txn

Insider Harris-Peterson Candace

Role Chief Human Resources Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock F1	890	$79.03	$70K

Holdings After Transaction: Common Stock — 21,101 shares (Direct)

Footnotes (1)

1. F1. Reflects shares withheld for net settlement to cover the tax liability for the vesting of restricted stock units.

Key Figures

Shares withheld for taxes: 890 shares Per-share value: $79.03 per share Shares owned after transaction: 21,101 shares +1 more

4 metrics

Shares withheld for taxes 890 shares Common stock withheld on 2026-07-15 for tax liability on RSU vesting

Per-share value $79.03 per share Value applied to the 890 withheld shares

Shares owned after transaction 21,101 shares Direct CECO common stock holdings following the tax-withholding disposition

Tax-withholding transactions 1 transaction Single Form 4 transaction coded F for tax withholding

Key Terms

restricted stock units, net settlement, tax-withholding disposition

3 terms

restricted stock units financial

"tax liability for the vesting of restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

net settlement financial

"shares withheld for net settlement to cover the tax liability"

tax-withholding disposition financial

"tax-withholding disposition of 890 shares to cover taxes"

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

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

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 07/17/2026 - 03:17 PM Accepted by SEC EDGAR 07/17/2026 - 03:17 PM Learn about SEC filing dates

FAQ

What insider transaction did CECO (CECO) report for Candace Harris-Peterson?

CECO reported that Chief Human Resources Officer Candace Harris-Peterson had 890 common shares withheld in a tax-withholding disposition on 2026-07-15. The shares covered taxes due from the vesting of restricted stock units through a net settlement mechanism.

How many CECO (CECO) shares were withheld for taxes in this Form 4?

The filing shows 890 CECO common shares were withheld. These shares were used to satisfy tax liabilities associated with the vesting of restricted stock units, rather than being sold in the open market by the executive.

At what price were the withheld CECO (CECO) shares valued?

The withheld shares were valued at $79.03 per share. This per-share value is applied to the 890 shares withheld to settle the executive’s tax obligation arising from the vesting of restricted stock units.

How many CECO (CECO) shares does Harris-Peterson own after the transaction?

Following the tax-withholding disposition, Candace Harris-Peterson directly owns 21,101 CECO common shares. This figure reflects her post-transaction direct holdings after the 890 shares were withheld for tax settlement purposes.

Was the CECO (CECO) insider tax-withholding transaction under a Rule 10b5-1 plan?

No. The Form 4 indicates the Rule 10b5-1 checkbox is not marked, so this tax-withholding disposition of 890 shares was not reported as occurring under a Rule 10b5-1 trading plan.

What triggered the tax withholding reported by CECO’s (CECO) CHRO?

The withholding was triggered by the vesting of restricted stock units. Shares were net-settled and withheld to cover the associated tax liability, as described in the footnote to the 890-share Form 4 transaction.

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

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^*

Harris-Peterson Candace

(Last) (First) (Middle)

5080 SPECTRUM DRIVE

SUITE 800E

(Street)

ADDISON TEXAS 75001

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
CECO ENVIRONMENTAL CORP [ CECO ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/15/2026

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	07/15/2026		F(1)		890	D	$79.03	21,101	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. Reflects shares withheld for net settlement to cover the tax liability for the vesting of restricted stock units.

	/s/ Kiril Kovachev as Attorney-in-Fact for Candace Harris-Peterson	07/17/2026
	** 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)