MarketPeel
Insider Trading Intelligence
Pricing
…
Gary Birkenbeuel
Mon, Jan 12, 2026
Jan 12
bought
$0.00
of
TTEK
4,397
shares @ $0.00
Increased holdings by
+9.40%
9th largest trade (out of 23)
Cluster Buy
Trade made by a director
Part of a cluster of 2 transactions by 2 insiders
Unscheduled trade
TTEK
TETRA TECH INC
Industrials
Professional Services
1D
0.00%
1W
+2.19%
1M
+7.17%
3M
-4.14%
6M
—
1Y
—
Recent insider activity at TTEK
May 15
Jeffrey R. Feeler
Bought
$50.18k
Feb 4
Brian N. Carter
Sold
$401.41k
Aug 14
Gary Birkenbeuel
Sold
$86.05k
Feb 4
Kirsten M. Volpi
Sold
$57.50k
Feb 4
Kirsten M. Volpi
Sold
$149.08k
Feb 4
Kirsten M. Volpi
Sold
$140.74k
Sep 11
Kimberly E. Ritrievi
Sold
$302.12k
Sep 11
Steven M. Burdick
Sold
$1.72m
Full TTEK profile →
Gary Birkenbeuel’s trading history →
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