T. Rowe Price (CECO) discloses 2.15M CECO Environmental shares, 3.7% stake

Rhea-AI Filing Summary

T. Rowe Price Investment Management, Inc. filed an amended Schedule 13G reporting its position in CECO Environmental Corp2,153,953 shares of CECO common stock, representing 3.7% of the outstanding class.

T. Rowe Price reports sole voting power over 2,147,618 shares and sole dispositive power over 2,153,953 shares, with no shared voting or dispositive power. The filer also notes that this reflects ownership of 5 percent or less of the class and expressly denies that the filing constitutes an admission of beneficial ownership for any other purpose.

Key Figures

Shares beneficially owned: 2,153,953 shares Percent of class owned: 3.7% Sole voting power: 2,147,618 shares +2 more

5 metrics

Shares beneficially owned 2,153,953 shares Common stock of CECO Environmental Corp reported by T. Rowe Price

Percent of class owned 3.7% Portion of CECO Environmental common stock class held by T. Rowe Price

Sole voting power 2,147,618 shares Shares for which T. Rowe Price has sole power to vote or direct the vote

Sole dispositive power 2,153,953 shares Shares for which T. Rowe Price can solely direct disposition

Ownership threshold status 5 percent or less Filer reports ownership of 5 percent or less of the CECO class

Key Terms

beneficial owner, sole voting power, sole dispositive power, Schedule 13G, +1 more

5 terms

beneficial owner financial

"shall not be construed as an admission that Price Investment Management is the beneficial owner"

A beneficial owner is the person who ultimately owns or controls a financial asset or property, even if their name isn't directly on official documents. Think of it like someone who secretly holds the keys to a safe deposit box—others may appear to have access, but the true owner is the one who benefits from what's inside. Identifying beneficial owners helps ensure transparency and prevent illegal activities like money laundering or fraud.

sole voting power financial

"Sole Voting Power 2,147,618.00"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

sole dispositive power financial

"Sole Dispositive Power 2,153,953.00"

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.

Schedule 13G regulatory

"T. Rowe Price Investment Management, Inc. hereby declares and affirms that the filing of"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

percent of class financial

"Percent of class: 3.7 %"

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

What ownership stake in CECO (CECO) does T. Rowe Price report in this Schedule 13G/A?

T. Rowe Price Investment Management reports 2,153,953 shares of CECO common stock, representing 3.7% of the outstanding class, according to this amended Schedule 13G filing.

Does T. Rowe Price have voting control over its CECO (CECO) shares?

T. Rowe Price reports sole voting power over 2,147,618 shares of CECO and no shared voting power, indicating it alone can vote or direct the vote for those shares.

What dispositive power over CECO (CECO) shares does T. Rowe Price report?

The filer reports sole dispositive power over 2,153,953 shares of CECO common stock and no shared dispositive power, meaning it alone can decide whether to sell or otherwise dispose of those shares.

Is T. Rowe Price a 5% or greater beneficial owner of CECO (CECO)?

No. T. Rowe Price reports beneficial ownership of 3.7% of CECO’s common stock and confirms it holds 5 percent or less of the class in this Schedule 13G/A.

Does T. Rowe Price admit beneficial ownership of CECO (CECO) shares beyond this filing?

No. T. Rowe Price states that this filing shall not be construed as an admission that it is the beneficial owner of the reported securities, and that such beneficial ownership is expressly denied.

Who signed the amended CECO (CECO) Schedule 13G/A for T. Rowe Price?

The filing is signed by Ellen York, Vice President of T. Rowe Price Investment Management, Inc., certifying the accuracy of the reported CECO ownership information.

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Available on EDGAR 08/14/2026 - 10:41 AM Accepted by SEC EDGAR 08/14/2026 - 10:39 AM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

CECO ENVIRONMENTAL CORP

(Name of Issuer)

COMMON STOCK

(Title of Class of Securities)

125141101

(CUSIP Number)

06/30/2026

(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): 125141101

1

Names of Reporting Persons

T. Rowe Price Investment Management, Inc.

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

MARYLAND

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 2,147,618.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 2,153,953.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,153,953.00

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)

3.7 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: CECO ENVIRONMENTAL CORP
(b)	Address of issuer's principal executive offices: 5080 SPECTRUM DRIVE, SUITE 800E, ADDISON, TX, 75001
Item 2.
(a)	Name of person filing: T. Rowe Price Investment Management, Inc.
(b)	Address or principal business office or, if none, residence: 1307 Point Street, Baltimore, MD 21231
(c)	Citizenship: Maryland
(d)	Title of class of securities: COMMON STOCK
(e)	CUSIP No.: 125141101
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: 2153953
(b)	Percent of class: 3.7 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 2147618
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 2153953
	(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. T. Rowe Price Investment Management, Inc. hereby declares and affirms that the filing of Schedule 13G shall not be construed as an admission that Price Investment Management is the beneficial owner of the securities referred to, which beneficial ownership is expressly denied.

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.

T. Rowe Price Investment Management, Inc.

Signature:	Ellen York
Name/Title:	Vice President
Date:	08/14/2026