Quick Takeaways
- CECO - CECO ENVIRONMENTAL CORP has 20 insiders with reported activity on this page.
- Net insider value flow over the last year: -$19,893,584.
- Recent transaction rows are available for direct filing-level review.
- Info
- Insider Trading
- Financials
- Holders
Insider Transactions Reported by 20 Insiders of CECO ENVIRONMENTAL CORP
- Symbol
- CECO on Nasdaq
- Location
- Addison, TX
What Changed
- Buy value: $339,925; sell value: $20,233,509.
- Net share flow: -412,500.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Source Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsNet insider flow leans to selling over the last 12 months. Net value: -$19,893,584.
Buys
$339,925
Shares: 7,500
Insiders: 1
Sells
$20,233,509
Shares: 420,000
Insiders: 3
Net
-$19,893,584
Shares: -412,500
Insiders: -2
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 7,500 | 420,000 | $339,925 | $20,233,509 | -$19,893,584 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
CECO ENVIRONMENTAL CORP executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Jason DeZwirek | Director | $127,184,009 | -$4,298,327 | -3.3% | Mixed | 30 Jul 2025 |
| Todd R. Gleason | Chief Executive Officer, Director | $39,998,094 | -$15,104,936 | -27% | Mixed | 31 Mar 2026 |
| Richard F. Wallman | Director | $13,546,487 | +$339,925 | +2.6% | Mixed | 05 Sep 2025 |
| Peter K. Johansson | SVP, Chief Financial Officer | $5,967,251 | Mixed | 31 Mar 2026 | ||
| Jonathan Pollack | Director | $4,190,257 | Mixed | 05 Aug 2021 | ||
| Matthew Eckl | Chief Financial Officer | $4,020,389 | Mixed | 15 Mar 2022 | ||
| Claudio A. Mannarino | Director | $3,313,278 | -$830,247 | -20% | Mixed | 30 Jul 2025 |
| Joycelynn Watkins-Asiyanbi | Title: Chief Administrative and Legal Officer | $3,295,090 | Mixed | 27 Jun 2025 | ||
| Valerie Gentile Sachs | Director | $2,554,621 | Mixed | 03 Jun 2025 | ||
| David B. Liner | Director | $2,492,610 | Mixed | 15 Mar 2023 | ||
| Munish Nanda | Director | $1,831,957 | Mixed | 03 Jun 2025 | ||
| Ramesh Nuggihalli | Chief Operating Officer | $1,560,076 | Mixed | 31 Mar 2023 | ||
| Eric M. Goldberg | Director | $1,463,796 | Mixed | 25 May 2021 | ||
| Alyson Noel Gregory | General Counsel | $1,377,687 | Mixed | 31 Mar 2026 | ||
| Paul M. Gohr | Chief Accounting Officer | $1,151,819 | Mixed | 31 Mar 2023 | ||
| Chasity Henry | Officer | $1,032,255 | Mixed | 10 Nov 2021 | ||
| Kiril Kovachev | Chief Accounting Officer | $1,029,646 | Mixed | 15 Mar 2026 | ||
| Robert E. Knowling Jr. | Director | $615,068 | Mixed | 03 Jun 2025 | ||
| Sam Weston Henderson | Title: SVP, Chief Human Resources Officer Exhibit 24: Power of Attorney | $598,503 | Mixed | 01 Jan 2026 | ||
| Laurie Siegel | Director | $498,149 | Mixed | 03 Jun 2025 |
Top shareholders of CECO ENVIRONMENTAL CORP (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| Jason DeZwirek |
13D/G
3/4/5
|
Director |
12%
|
4,198,111
|
$259,443,260 | $0 | 23 Feb 2026 | |
| BlackRock, Inc. |
13F
13D/G
|
Company |
6.3%
from 13D/G
|
2,285,359
|
$136,778,736 | — | 31 Dec 2025 | |
| FMR LLC |
13F
13D/G
|
Company |
6.2%
from 13D/G
|
2,211,372
|
$132,350,610 | — | 31 Dec 2025 | |
| AMERICAN CENTURY INVESTMENT MANAGEMENT INC |
13D/G
|
— |
5.7%
|
2,038,312
|
$125,967,682 | $0 | 31 Dec 2025 | |
| AMERICAN CENTURY COMPANIES INC |
13F
|
Company |
5.7%
|
2,038,312
|
$121,993,100 | — | 31 Dec 2025 | |
| VANGUARD GROUP INC |
13D/G
13F
|
The Vanguard Group · Company |
5%
|
1,780,596
|
$106,568,849 | +$588,925 | 31 Dec 2025 | |
| Capital International Investors |
13D/G
13F
|
Company |
4.7%
|
1,675,351
|
$85,777,971 | $0 | 30 Sep 2025 | |
| KING LUTHER CAPITAL MANAGEMENT CORP |
13F
|
Company |
2.7%
|
951,199
|
$56,929,260 | — | 31 Dec 2025 | |
| JANUS HENDERSON GROUP PLC |
13F
|
Company |
2.6%
|
922,000
|
$55,181,505 | — | 31 Dec 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
13D/G
|
Company |
3.6%
from 13D/G
|
895,540
|
$53,598,168 | — | 31 Dec 2025 | |
| ROYCE & ASSOCIATES LP |
13F
|
Company |
2.1%
|
740,687
|
$44,330,117 | — | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2%
|
729,700
|
$43,679,601 | — | 31 Dec 2025 | |
| T. Rowe Price Investment Management, Inc. |
13F
|
Company |
2%
|
718,992
|
$43,032,000 | — | 31 Dec 2025 | |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC |
13F
|
Company |
2%
|
706,273
|
$42,270,439 | — | 31 Dec 2025 | |
| THRIVENT FINANCIAL FOR LUTHERANS |
13F
|
Company |
1.9%
|
672,147
|
$40,229,000 | — | 31 Dec 2025 | |
| Todd R. Gleason |
3/4/5
|
Chief Executive Officer, Director |
—
mixed-class rows
|
687,374
mixed-class rows
|
$39,998,094 | -$15,104,936 | 31 Mar 2026 | |
| STATE STREET CORP |
13F
|
Company |
1.8%
|
650,886
|
$38,955,527 | — | 31 Dec 2025 | |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
|
Company |
1.7%
|
607,417
|
$36,353,908 | — | 31 Dec 2025 | |
| DRIEHAUS CAPITAL MANAGEMENT LLC |
13F
|
Company |
1.6%
|
579,950
|
$34,710,008 | — | 31 Dec 2025 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
1.5%
|
525,567
|
$31,455,185 | — | 31 Dec 2025 | |
| EMERALD ADVISERS, LLC |
13F
|
Company |
1.3%
|
458,525
|
$27,442,721 | — | 31 Dec 2025 | |
| Hood River Capital Management LLC |
13D/G
|
— |
1.4%
|
492,374
|
$25,209,549 | -$73,487,053 | 30 Sep 2025 | |
| Legal & General Group Plc |
13F
|
Company |
1.2%
|
418,255
|
$25,032,563 | — | 31 Dec 2025 | |
| First Eagle Investment Management, LLC |
13F
|
Company |
1%
|
366,867
|
$21,956,990 | — | 31 Dec 2025 | |
| Capital World Investors |
13F
|
Company |
0.93%
|
333,098
|
$19,935,915 | — | 31 Dec 2025 | |
| LOOMIS SAYLES & CO L P |
13F
|
Company |
0.91%
|
327,509
|
$19,601,413 | — | 31 Dec 2025 | |
| NEEDHAM INVESTMENT MANAGEMENT LLC |
13F
|
Company |
0.83%
|
298,500
|
$17,865,225 | — | 31 Dec 2025 | |
| MORGAN STANLEY |
13F
|
Company |
0.82%
|
294,115
|
$17,602,802 | — | 31 Dec 2025 | |
| IES Holdings, Inc. |
13F
|
Company |
0.79%
|
283,432
|
$16,963,405 | — | 31 Dec 2025 | |
| UBS Group AG |
13F
|
Company |
0.74%
|
267,288
|
$15,997,187 | — | 31 Dec 2025 | |
| EMERALD MUTUAL FUND ADVISERS TRUST |
13F
|
Company |
0.73%
|
260,598
|
$15,596,790 | — | 31 Dec 2025 | |
| Nuveen, LLC |
13F
|
Company |
0.72%
|
258,758
|
$15,486,667 | — | 31 Dec 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.71%
|
253,726
|
$15,185,501 | — | 31 Dec 2025 | |
| FRANKLIN RESOURCES INC |
13F
|
Company |
0.71%
|
253,491
|
$15,171,437 | — | 31 Dec 2025 | |
| TWO SIGMA ADVISERS, LP |
13F
|
Company |
0.69%
|
247,342
|
$14,803,419 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.68%
|
245,161
|
$14,672,886 | — | 31 Dec 2025 | |
| MARTIN & CO INC /TN/ |
13F
|
Company |
0.68%
|
243,299
|
$14,561,415 | — | 31 Dec 2025 | |
| Richard F. Wallman |
3/4/5
|
Director |
0.84%
|
300,409
|
$13,546,487 | +$339,925 | 05 Sep 2025 | |
| DEUTSCHE BANK AG\ |
13F
|
Company |
0.63%
|
224,784
|
$13,453,323 | — | 31 Dec 2025 | |
| OSTERWEIS CAPITAL MANAGEMENT INC |
13F
|
Company |
0.62%
|
223,682
|
$13,387,368 | — | 31 Dec 2025 | |
| SILVERCREST ASSET MANAGEMENT GROUP LLC |
13F
|
Company |
0.58%
|
206,467
|
$12,357,050 | — | 31 Dec 2025 | |
| LORD, ABBETT & CO. LLC |
13F
|
Company |
0.56%
|
202,216
|
$12,103,000 | — | 31 Dec 2025 | |
| Allspring Global Investments Holdings, LLC |
13F
|
Company |
0.54%
|
194,322
|
$11,630,172 | — | 31 Dec 2025 | |
| SEGALL BRYANT & HAMILL, LLC |
13F
|
Company |
0.51%
|
184,120
|
$11,019,582 | — | 31 Dec 2025 | |
| PEREGRINE CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.51%
|
182,755
|
$10,937,887 | — | 31 Dec 2025 | |
| Amundi |
13F
|
Individual |
0.49%
|
176,996
|
$10,593,211 | — | 31 Dec 2025 | |
| BNP PARIBAS FINANCIAL MARKETS |
13F
|
Company |
0.49%
|
176,885
|
$10,586,567 | — | 31 Dec 2025 | |
| CASTLEARK MANAGEMENT LLC |
13F
|
Company |
0.44%
|
156,505
|
$9,366,824 | — | 31 Dec 2025 | |
| ESSEX INVESTMENT MANAGEMENT CO LLC |
13F
|
Company |
0.43%
|
154,457
|
$9,244,251 | — | 31 Dec 2025 | |
| FIRST TRUST ADVISORS LP |
13F
|
Company |
0.43%
|
153,050
|
$9,160,042 | — | 31 Dec 2025 |
Recent Insider Transactions by Companies or Individuals for CECO ENVIRONMENTAL CORP
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Peter K. Johansson | CECO | Common Stock | Tax liability | -0.91% | -653 | 70,726 | 31 Mar 2026 | Direct | ||
| Todd R. Gleason | CECO | Common Stock | Tax liability | -0.47% | -2,110 | 450,688 | 31 Mar 2026 | Direct | ||
| Alyson Noel Gregory | CECO | Common Stock | Tax liability | -0.75% | -175 | 23,019 | 31 Mar 2026 | Direct | ||
| Alyson Noel Gregory | CECO | Common Stock | Tax liability | -0.6% | -139 | 23,194 | 17 Mar 2026 | Direct | ||
| Kiril Kovachev | CECO | Common Stock | Tax liability | -2.08% | -346 | 16,261 | 17 Mar 2026 | Direct | ||
| Peter K. Johansson | CECO | Common Stock | Tax liability | -2.15% | -1,570 | 71,379 | 17 Mar 2026 | Direct | ||
| Alyson Noel Gregory | CECO | Common Stock | Award | 15.6% | 3,155 | 23,333 | 16 Mar 2026 | Direct | ||
| Kiril Kovachev | CECO | Common Stock | Award | 11.8% | 1,753 | 16,607 | 16 Mar 2026 | Direct | ||
| Peter K. Johansson | CECO | Common Stock | Award | 5.72% | 3,944 | 72,949 | 16 Mar 2026 | Direct | ||
| Todd R. Gleason | CECO | Stock Option (right to buy) | Award | 17,563 | 17,563 | 16 Mar 2026 | Direct | |||
| Alyson Noel Gregory | CECO | Common Stock | Tax liability | -0.74% | -150 | 20,178 | 15 Mar 2026 | Direct | ||
| Kiril Kovachev | CECO | Common Stock | Tax liability | -2.49% | -380 | 14,854 | 15 Mar 2026 | Direct | ||
| Peter K. Johansson | CECO | Common Stock | Tax liability | -8.85% | -6,698 | 69,005 | 15 Mar 2026 | Direct | ||
| Peter K. Johansson | CECO | Common Stock | Award | 27% | 16,083 | 75,703 | 15 Mar 2026 | Direct | ||
| Todd R. Gleason | CECO | Common Stock | Tax liability | -6.12% | -29,535 | 452,798 | 15 Mar 2026 | Direct | ||
| Todd R. Gleason | CECO | Common Stock | Award | 18.4% | 75,055 | 482,333 | 15 Mar 2026 | Direct | ||
| Todd R. Gleason | CECO | Common Stock | Tax liability | -0.87% | -3,557 | 407,278 | 07 Mar 2026 | Direct | ||
| Alyson Noel Gregory | CECO | Common Stock | Tax liability | -1.39% | -287 | 20,328 | 07 Mar 2026 | Direct | ||
| Alyson Noel Gregory | CECO | Common Stock | Award | 69.7% | 8,465 | 20,615 | 15 Jan 2026 | Direct | ||
| Todd R. Gleason | CECO | Common Stock | Sale | -19.3% | $4,949,127 | $50.45 | -98,101 | 410,835 | 22 Sep 2025 | Direct |
| Todd R. Gleason | CECO | Common Stock | Options Exercise | 23.9% | 98,101 | 508,936 | 22 Sep 2025 | Direct | ||
| Todd R. Gleason | CECO | Stock Option (right to buy) | Options Exercise | -14.1% | -98,101 | 598,204 | 22 Sep 2025 | Direct | ||
| Todd R. Gleason | CECO | Common Stock | Sale | -19.9% | $5,025,669 | $49.32 | -101,899 | 410,835 | 19 Sep 2025 | Direct |
| Todd R. Gleason | CECO | Common Stock | Options Exercise | 24.8% | 101,899 | 512,734 | 19 Sep 2025 | Direct | ||
| Todd R. Gleason | CECO | Common Stock | Sale | -19.6% | $5,130,140 | $51.30 | -100,000 | 410,835 | 18 Sep 2025 | Direct |
| Todd R. Gleason | CECO | Common Stock | Options Exercise | 24.3% | 100,000 | 510,835 | 18 Sep 2025 | Direct | ||
| Todd R. Gleason | CECO | Stock Option (right to buy) | Options Exercise | -22.5% | -201,899 | 696,305 | 18 Sep 2025 | Direct | ||
| Peter K. Johansson | CECO | Restricted Stock Units | Award | 30,000 | 30,000 | 12 Sep 2025 | Direct | |||
| Richard F. Wallman | CECO | Common Stock | Purchase | 3.87% | $140,800 | $46.93 | 3,000 | 80,500 | 05 Sep 2025 | By spouse |
| Richard F. Wallman | CECO | Common Stock | Purchase | 1.97% | $66,375 | $44.25 | 1,500 | 77,500 | 29 Aug 2025 | By spouse |
| Richard F. Wallman | CECO | Common Stock | Purchase | 1.38% | $132,750 | $44.25 | 3,000 | 219,909 | 29 Aug 2025 | Direct |
| Peter K. Johansson | CECO | Common Stock | Tax liability | -3.72% | -2,302 | 59,620 | 15 Aug 2025 | Direct | ||
| Jason DeZwirek | CECO | Common Stock | Sale | -13% | $1,306,170 | $43.54 | -30,000 | 200,000 | 31 Jul 2025 | By 0to100 Inc. |
| Jason DeZwirek | CECO | Common Stock | Sale | -23.3% | $2,992,157 | $42.75 | -70,000 | 230,000 | 30 Jul 2025 | By 0to100 Inc. |
| Claudio A. Mannarino | CECO | Common Stock | Sale | -20.5% | $830,247 | $41.51 | -20,000 | 77,589 | 30 Jul 2025 | Direct |
| Kiril Kovachev | CECO | Common Stock | Tax liability | -2.95% | -460 | 15,114 | 05 Jul 2025 | Direct | ||
| Joycelynn Watkins-Asiyanbi | CECO | Common Stock | Tax liability | -2.08% | -1,554 | 73,178 | 27 Jun 2025 | Direct | ||
| Todd R. Gleason | CECO | Restricted Stock Units | Award | 150,000 | 150,000 | 04 Jun 2025 | Direct | |||
| Munish Nanda | CECO | Common Stock | Award | 9.41% | 6,300 | 73,249 | 03 Jun 2025 | Direct | ||
| Richard F. Wallman | CECO | Common Stock | Award | 4.73% | 9,792 | 216,909 | 03 Jun 2025 | Direct | ||
| Jason DeZwirek | CECO | Common Stock | Award | 0.51% | 6,300 | 1,233,865 | 03 Jun 2025 | Direct | ||
| Valerie Gentile Sachs | CECO | Common Stock | Award | 9.75% | 9,072 | 102,144 | 03 Jun 2025 | Direct | ||
| Robert E. Knowling Jr. | CECO | Restricted Stock Units | Award | 45% | 6,300 | 20,311 | 03 Jun 2025 | Direct | ||
| Laurie Siegel | CECO | Common Stock | Award | 46.3% | 6,300 | 19,918 | 03 Jun 2025 | Direct | ||
| Claudio A. Mannarino | CECO | Common Stock | Award | 3.34% | 3,150 | 97,589 | 03 Jun 2025 | Direct | ||
| Claudio A. Mannarino | CECO | Restricted Stock Units | Award | 110.3% | 3,150 | 6,006 | 03 Jun 2025 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.