UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

o

Rule 13d-1(b)

x

Rule 13d-1(c)

o

Rule 13d-1(d)

CUSIP No. 125141101

Schedule 13G

1.

Name of Reporting Person
S.S. or I.R.S. Identification No. of Above Person

Trigran Investments, L.P.

2.

Check the Appropriate Box if a Member of a Group

(a)

o

(b)

x

3.

SEC Use Only

4.

Citizenship or Place of Organization
Illinois company

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
0

6.

Shared Voting Power
1,861,642 shares of common stock

7.

Sole Dispositive Power
0

8.

Shared Dispositive Power
1,861,642 shares of common stock

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
1,861,642 shares of common stock

10.

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares  o

11.

Percent of Class Represented by Amount in Row (9)
Approximately 5.3% (based on 35,204,911 shares of common stock issued and outstanding as of July 31, 2019 per CECO Environmental Corp. Form 10-Q filed August 6, 2019).

12.

Type of Reporting Person
PN

CUSIP No. 125141101

Schedule 13G

Item 1(a)

Name of Issuer:
CECO Environmental Corp.

Item 1(b)

Address of Issuer’s Principal Executive Offices:
14651 North Dallas Parkway

Dallas, Texas 75254

Item 2(a)

Name of Person Filing

Item 2(b)

Address of Principal Business Office

Item 2(c)

Citizenship
Trigran Investments, L.P.

630 Dundee Road, Suite 230

Northbrook, IL 60062

Illinois limited partnership

2(d)

Title of Class of Securities:
Common Stock, $0.01 par value

2(e)

CUSIP Number:
125141101

Item 3

If this statement is filed pursuant to Rules 13d-1(b), or 13d-2(b) or (c), check whether the person filing is a:

(a)

o

Broker or dealer registered under section 15 of the Exchange Act;

(b)

o

Bank as defined in section 3(a)(6) of the Exchange Act;

(c)

o

Insurance company as defined in section 3(a)(19) of the Exchange Act;

(d)

o

Investment company registered under section 8 of the Investment Company Act;

(e)

o

An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E);

(f)

o

An employee benefit plan or endowment fund in accordance with Rule 13d-1(b)(1)(ii)(F);

(g)

o

A parent holding company or control person in accordance with Rule 13d-1(b)(1)(ii)(G);

(h)

o

A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act;

(i)

o

A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act;

(j)

o

A non-U.S. institution in accordance with Rule 13d–1(b)(1)(ii)(J);

(k)

o

Group, in accordance with Rule 13d–1(b)(1)(ii)(K). If filing as a non-U.S. institution in accordance with Rule 13d–1(b)(1)(ii)(J), please specify the type of institution:____________________________

CUSIP No. 125141101

Schedule 13G

Item 4

Ownership:

(a)

Amount beneficially owned:   

Incorporated by reference to Item 9 of the cover page pertaining to each reporting person.

(b)

Percent of class:   

Incorporated by reference to Item 11 of the cover page pertaining to each reporting person.

(c)

Number of shares as to which such person has:

(i)

Sole power to vote or to direct the vote:   

Incorporated by reference to Item 5 of the cover page pertaining to each reporting person.

(ii)

Shared power to vote or to direct the vote:    

Incorporated by reference to Item 6 of the cover page pertaining to each reporting person.

(iii)

Sole power to dispose or to direct the disposition of:   

Incorporated by reference to Item 7 of the cover page pertaining to each reporting person.

(iv)

Shared power to dispose or to direct the disposition of:   

Incorporated by reference to Item 8 of the cover page pertaining to each reporting person.

Item 5

Ownership of Five Percent or Less of a Class:

Not Applicable.

Item 6

Ownership of More than Five 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:

Not Applicable.

Item 8

Identification and Classification of Members of the Group:

Not Applicable.

Item 9

Notice of Dissolution of Group:

Not Applicable.

CUSIP No. 125141101

Schedule 13G

Item 10

Certification:

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.

TRIGRAN INVESTMENTS, L.P.

By:

/s/ Lawrence A. Oberman

Name:

Lawrence A. Oberman

Title:

Executive Vice President and Director of
Trigran Investments, Inc., the General Partner
of Trigran Investments, L.P.