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Who

Kirsten M. Volpi

Director

Company insider

Files Form 4 as: Director, Tetra Tech.

In numbers

Trades disclosed
119
Buys
0
Sells
19
Bought
$0
Sold
$3.9M
Companies
1
Companies where not an officer
1
First trade
29 Jul 2013
Last trade
4 Aug 2026
Last filed
6 Aug 2026

Companies traded

Everywhere else they filed: board seats, 10% stakes, other companies
TTEK Tetra TechDirector · Professional Services · last 4 Aug 20260 buys · 19 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
10Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
4 Aug 2026filed 6 Aug 2026TTEK Tetra TechProfessional ServicesSEC FORM 4 Code M$22K2,300 at $9.59filing
4 Aug 2026filed 6 Aug 2026TTEK Tetra Techoption or derivative · Professional ServicesSEC FORM 4 Code M—2,300 at $0.00filing
4 Aug 2026filed 6 Aug 2026TTEK Tetra Techoption or derivative · Professional ServicesSEC FORM 4 Code M—2,300 at $0.00filing
4 Aug 2026filed 6 Aug 2026TTEK Tetra TechProfessional ServicesSEC FORM 4 Code M$22K2,300 at $9.59filing
4 Jun 2026filed 5 Jun 2026TTEK Tetra TechProfessional ServicesSEC FORM 4 Code M$16K1,700 at $9.59filing
4 Jun 2026filed 5 Jun 2026TTEK Tetra Techoption or derivative · Professional ServicesSEC FORM 4 Code M—1,700 at $0.00filing
4 Jun 2026filed 5 Jun 2026TTEK Tetra Techoption or derivative · Professional ServicesSEC FORM 4 Code M—1,700 at $0.00filing
4 Jun 2026filed 5 Jun 2026TTEK Tetra TechProfessional ServicesSEC FORM 4 Code M$16K1,700 at $9.59filing
10 Feb 2026filed 12 Feb 2026TTEK Tetra TechProfessional ServicesSEC FORM 4 Code M$9,5901,000 at $9.59filing
10 Feb 2026filed 12 Feb 2026TTEK Tetra Techoption or derivative · Professional ServicesSEC FORM 4 Code M—1,000 at $0.00filing
10 Feb 2026filed 12 Feb 2026TTEK Tetra Techoption or derivative · Professional ServicesSEC FORM 4 Code M—1,000 at $0.00filing
10 Feb 2026filed 12 Feb 2026TTEK Tetra TechProfessional ServicesSEC FORM 4 Code M$9,5901,000 at $9.59filing
30 Nov 2025filed 2 Dec 2025TTEK Tetra Techoption or derivative · Professional ServicesSEC FORM 4 Code M—1,718 at $0.00filing
30 Nov 2025filed 2 Dec 2025TTEK Tetra TechProfessional ServicesSEC FORM 4 Code M—1,718 at $0.00filing
28 Nov 2025filed 2 Dec 2025TTEK Tetra Techoption or derivative · Professional ServicesSEC FORM 4 Code M$9,5901,000 at $9.59filing
28 Nov 2025filed 2 Dec 2025TTEK Tetra TechProfessional ServicesSEC FORM 4 Code M$9,5901,000 at $9.59filing
19 Nov 2025filed 2 Dec 2025TTEK Tetra Techoption or derivative · Professional ServicesSEC FORM 4 Code A—1,964 at $0.00filing
18 Nov 2025filed 20 Nov 2025TTEK Tetra TechProfessional ServicesSEC FORM 4 Code A—4,104 at $0.00filing
5 Feb 2025filed 6 Feb 2025TTEK Tetra Techoption or derivative · Professional ServicesSEC FORM 4 Code M$58K6,000 at $9.59filing
5 Feb 2025filed 6 Feb 2025TTEK Tetra TechProfessional ServicesSEC FORM 4 Code M$58K6,000 at $9.59filing

News

Tetra Tech (NASDAQ:TTEK) and Smart Powerr (NASDAQ:CREG) Head to Head AnalysisTTEK · themarketsdaily.com · 8 Oct 2026Tetra Tech (NASDAQ:TTEK) and American Rebel (NASDAQ:AREB) Head to Head ReviewTTEK · tickerreport.com · 8 Oct 2026

0 headlines in the last 90 days name Kirsten M. Volpi; 2 articles from the last 14 days about the 1 company they traded most, at most three about any one of them.

Sectors

Industrials19

Buys in green, sells in red, by the company’s sector.

Related people

Jeffrey R. FeelerDirector · Director at Tetra Tech, filing Form 4 there in the last year
Eric W. ThornburgDirector · Director at Tetra Tech, filing Form 4 there in the last year
Kimberly E. RitrieviDirector · Director at Tetra Tech, filing Form 4 there in the last year
Roger R. ArgusPresident and CEO · President and CEO at Tetra Tech, filing Form 4 there in the last year
Christiana ObiayaDirector · Director at Tetra Tech, filing Form 4 there in the last year