TRILLIUM ASSET MANAGEMENT, LLC

Position in TTEK — Tetra Tech Inc

CIK 884541 BOSTON, MA

Back to TTEK Full portfolio

Position in TTEK

as of Jun 30, 2026 · filed Aug 11, 2026 Compact

Position Value

$18,718,119

+$634,523 QoQ

Shares Held

647,910

+7.9% QoQ

Ownership

0.253%

of shares outstanding

% of Portfolio

0.58%

of 13F equity value

Holder Rank

#67

of 543 holders

Holding Since

Mar 2020

26 quarters on record

Voting authority Sole 99% Shared 0% None 1%

Common Shares in TTEK Over Time

Shares Held

Position Value (USD)

Position in Engineering & Construction

Industrials · as of Jun 30, 2026

TRILLIUM ASSET MANAGEMENT, LLC holds $61,592,546 across 3 Engineering & Construction names. TTEK ranks #3 (30.4% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	PWR	Quanta Services, Inc.	30,443	$21,920,177
2	MYRG	Myr Group Inc.	41,875	$20,954,250
3	TTEK	Tetra Tech Inc This page	647,910	$18,718,119

All Filings in TTEK

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26 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$18,718,119	647,910	+7.9%	Shares	Defined	2026-08-11
2026-03-31	$18,083,596	600,385	+53.4%	Shares	Defined	2026-05-11
2025-12-31	$13,125,174	391,329	-6.5%	Shares	Defined	2026-02-13
2025-09-30	$13,976,906	418,721	-1.0%	Shares	Defined	2025-11-14
2025-06-30	$15,212,086	423,028	-3.0%	Shares	Defined	2025-08-06
2025-03-31	$12,752,532	435,984	-15.6%	Shares	Defined	2025-05-13
2024-12-31	$20,578,595	516,531	-2.6%	Shares	Defined	2025-02-11
2024-09-30	$25,016,352	530,457	+392.6%	Shares	Defined	2024-11-07
2024-06-30	$22,021,269	107,694	+3.0%	Shares	Defined	2024-08-08
2024-03-31	$19,305,889	104,520	-0.9%	Shares	Defined	2024-05-09
2023-12-31	$17,603,269	105,453	+3.7%	Shares	Defined	2024-02-08
2023-09-30	$15,466,772	101,735	+5.5%	Shares	Defined	2023-11-08
2023-06-30	$15,787,974	96,421	-0.2%	Shares	Defined	2023-08-10
2023-03-31	$14,197,529	96,641	+1.1%	Shares	Defined	2023-05-09
2022-12-31	$13,876,098	95,572	-2.2%	Shares	Defined	2023-02-08
2022-09-30	$12,555,067	97,682	-8.4%	Shares	Defined	2022-11-09
2022-06-30	$14,563,330	106,652	-1.1%	Shares	Defined	2022-08-08
2022-03-31	$17,779,047	107,791	-0.4%	Shares	Defined	2022-05-04
2021-12-31	$18,380,680	108,249	+4.8%	Shares	Defined	2022-02-08
2021-09-30	$15,428,464	103,311	+6.3%	Shares	Defined	2021-11-12
2021-06-30	$11,861,189	97,191	+6.9%	Shares	Defined	2021-11-12
2021-03-31	$12,337,490	90,904	+258.5%	Shares	Defined	2021-05-10
2020-12-31	$2,935,486	25,354	-11.5%	Shares	Defined	2021-02-12
2020-09-30	$2,734,738	28,636	-32.1%	Shares	Sole	2020-11-09
2020-06-30	$3,335,620	42,159	-2.8%	Shares	Sole	2020-08-06
2020-03-31	$3,061,871	43,357	—	Shares	Sole	2020-05-07
No filing history on record for this holder in this stock.