Tetra Tech, Inc TTEK

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Tetra Tech, Inc. - Common Stock · Company · Nasdaq

Paper trade (simulated — no real money)

Fill: USD 31.7100 · FX 1 USD = 1.290100 SGD · about SGD 40.9091 per unit

Sign in to place simulated trades. USD fills are converted into the SGD portfolio at the displayed rate.

Announcement types: (default: consequential filings)
Results & current reports
Capital markets
Ownership & governance

USD closing-price chart (daily close from yfinance · Last year)

USD 37.56 → 31.71 · -15.6%
42.61034.39526.180 1 2 3 4 5 6 7 8,9 10 11 12 13 14 15 Jul 25Oct 25Jan 26Apr 26Jul 26

Numbered dotted lines mark the filtered filings under Announcement Events below.

Price & SEC Filing History 26 Jul 2025 — 27 Jul 2026 (Last year)

Daily Nasdaq prices are sourced from yfinance. Yellow highlighting marks an intraday rise or a gap up between adjacent trading sessions. SEC acceptance times are converted to US Eastern time: pre-market filings appear below that day’s OHLCV row; filings accepted after the 09:30 ET open appear above it. The SEC does not publish an exact first-public-availability timestamp, so acceptance time is the best available proxy.

No data yet
Weekend
Weekend
30.5900 32.0600 30.4100 31.7100 2,205,900
30.8500 31.3400 30.4400 30.5700 2,221,900
30.8000 31.1400 30.6700 30.9800 2,049,400
31.2200 31.4100 30.5000 30.5100 2,072,800
31.5800 31.5800 31.0100 31.2700 1,949,800
Weekend
Weekend
31.9400 32.3400 31.2600 31.5900 2,043,100
31.7400 32.1800 31.6900 32.0300 2,507,300
31.1100 31.9900 30.9600 31.3300 2,963,000
30.7600 31.4400 30.7200 31.1100 2,088,200
31.2800 31.8300 31.1300 31.1700 2,386,200
Weekend
Weekend
31.1400 31.2900 30.5800 30.9900 2,043,500
30.5400 31.0200 30.2700 30.9400 2,409,300
30.6400 31.0800 30.5500 30.7900 3,064,800
31.2900 31.7500 30.6000 30.9300 2,904,600
29.8900 31.3300 29.7500 31.1500 2,954,400
Weekend
Weekend
No trading
29.2800 29.9200 29.2800 29.9000 2,352,500
29.1600 29.4000 28.9100 29.1800 3,276,500
28.9000 28.9900 28.1200 28.8900 1,981,300
29.3800 29.4900 28.8600 28.8800 2,389,600
Weekend
Weekend
28.4400 29.3400 28.4400 29.2600 4,210,400
28.5100 29.2200 28.2000 28.4400 3,289,200
28.0000 28.7100 27.9400 28.5800 4,506,500
27.2600 28.1600 27.1800 28.0400 5,187,100
27.1800 27.3600 26.7100 27.1500 5,275,200
Weekend
Weekend
No trading
28.1200 28.4100 26.7900 27.3600 10,188,600
28.1000 29.0000 27.7500 28.1200 3,408,600
28.0000 28.5600 28.0000 28.3700 3,381,900
28.5600 28.6900 27.9200 28.0000 4,204,800
Weekend
Weekend
27.9400 28.6900 27.7400 28.4300 2,795,400
27.1500 28.1200 26.9400 27.9200 4,301,000
27.9900 28.2100 27.1400 27.1500 4,596,900
27.9400 28.2800 27.5100 28.0100 3,101,000
27.7500 28.1300 27.4100 27.5900 2,756,200
Weekend
Weekend
28.3700 28.6300 27.7800 27.9000 2,632,900
28.2800 28.5600 27.7100 27.9700 3,031,300
27.0800 27.8100 26.9800 27.8000 3,593,600
28.1800 28.5100 27.0200 27.1300 3,991,300
27.4900 28.6800 27.3500 28.3000 6,751,100
Weekend
Weekend
27.5000 27.8800 27.2000 27.4900 3,934,500
27.8400 28.1400 27.5200 27.7000 3,134,500
27.7100 28.5000 27.6600 27.9200 3,897,500
27.5700 28.1300 27.3500 27.7300 3,368,400
No trading
Weekend
Weekend
27.2100 27.9800 27.2100 27.6500 2,679,600
27.2500 27.4300 26.7500 27.2500 2,750,400
27.0500 27.4700 26.3800 27.4300 3,139,100
27.5000 28.1000 27.1900 27.2400 3,795,100
26.5300 27.4200 26.4700 27.2700 3,812,400
Weekend
Weekend
26.2300 26.6200 25.8100 26.1800 5,746,800
27.1500 27.6200 26.0700 26.2000 8,092,800
28.6900 28.6900 26.4500 27.0600 6,494,500
29.8000 30.2100 28.6300 28.7100 3,546,300
30.2700 30.6700 29.4300 29.5900 2,732,500
Weekend
Weekend
30.6900 30.8800 30.2600 30.2900 2,854,700
31.2800 31.5200 30.5900 30.6900 2,727,700
31.6500 32.1600 30.4500 31.0200 3,593,100
31.8500 32.4900 31.2000 31.6500 2,157,400
31.6700 32.4400 31.3900 31.6700 3,265,200
Weekend
Weekend
15 · 10-Q After-hours · 16:33 ET 10-Q ↗
32.7700 33.3300 31.1300 31.6700 3,930,600
33.6400 34.2900 31.8400 32.3200 5,609,900
14 · 8-K After-hours · 16:06 ET FORM 8-K ↗
31.3800 31.9000 30.7000 31.8700 3,055,700
31.8400 32.3000 30.7600 31.3800 3,223,900
31.3500 32.3400 31.3500 31.5500 5,815,300
Weekend
Weekend
31.1800 31.6000 30.7400 31.2400 2,255,400
31.4000 31.7100 30.5200 31.3300 2,471,700
31.8800 32.0800 31.3400 31.4700 2,362,500
31.7300 32.4400 31.6000 31.6900 1,607,800
31.4700 32.1400 31.4700 31.7300 2,210,700
Weekend
Weekend
31.6900 32.0900 31.3600 31.6100 1,831,700
31.5400 32.1300 31.2700 31.6300 3,645,300
31.3900 32.2700 31.3800 31.6600 3,260,200
31.0400 31.6100 30.8100 31.3900 2,781,900
30.1600 31.1600 29.9000 31.0400 2,709,800
Weekend
Weekend
30.8100 31.0400 29.8800 30.1900 2,268,200
30.9400 31.2900 30.0700 30.8500 3,425,900
31.4000 32.0000 30.8900 30.9400 2,986,600
31.1700 31.5900 30.8600 30.9100 1,392,400
30.9600 31.4100 30.6300 31.1900 1,232,200
Weekend
Weekend
No trading
30.2700 31.5500 29.9600 31.0700 1,718,100
30.3700 31.0900 30.1300 30.7300 2,212,200
29.9700 30.8900 29.5700 30.1200 2,008,700
30.4800 30.4800 29.6100 29.7600 2,159,500
Weekend
Weekend
30.3500 30.5700 29.7500 29.7800 3,152,500
13 · 8-K After-hours · 16:05 ET FORM 8-K ↗
31.1200 31.4000 30.3800 30.4100 3,185,500
31.9500 32.3700 31.0900 31.6100 1,789,400
30.9000 31.7600 30.4600 31.6600 3,290,600
30.9000 31.4500 30.3300 31.2200 4,438,400
Weekend
Weekend
31.1800 31.4200 29.9900 30.4000 5,069,000
30.5200 31.0000 30.2700 30.9100 2,716,100
31.4300 32.0100 30.7100 30.7800 3,259,000
31.7800 32.2400 31.3300 31.7700 1,912,800
32.3300 32.4900 30.8500 31.4200 3,849,700
Weekend
Weekend
33.3800 34.0800 31.5300 32.1800 2,856,100
33.6800 34.4000 33.1500 33.1800 1,777,600
33.5200 34.1900 32.9700 33.7800 2,040,600
34.7100 35.2400 33.0000 33.5600 2,713,600
34.7800 35.2200 33.8300 35.1400 1,769,700
Weekend
Weekend
35.0000 35.0700 34.1000 34.8700 1,861,300
35.8500 36.2700 35.0800 35.1400 2,437,900
36.1400 36.2400 35.5900 36.1600 1,753,100
35.4900 36.7000 35.0800 36.4500 2,828,900
35.8100 36.2800 35.2900 36.0200 2,469,100
Weekend
Weekend
35.1800 36.0900 34.5800 35.8400 3,136,000
33.5600 35.6000 33.3400 35.5200 4,159,100
33.0500 33.4400 32.1600 33.4200 2,763,500
33.3500 33.5900 32.5800 32.8800 4,113,700
36.1600 36.2600 33.4300 33.5400 4,119,000
Weekend
Weekend
12 · 8-K After-hours · 17:00 ET FORM 8-K ↗
37.1200 37.3200 36.1900 36.3200 2,356,200
36.8200 37.3200 36.5100 37.1600 2,717,000
35.7200 37.2100 35.4600 36.9600 2,932,700
36.6500 37.4200 35.4200 35.5300 4,152,100
No trading
Weekend
Weekend
35.6300 37.7300 35.5600 36.7000 3,780,900
40.4200 40.6600 35.0900 35.6600 8,384,500
42.8100 43.1400 39.6200 40.4200 5,871,900
42.0900 42.7500 41.8600 42.6100 2,382,200
41.3100 42.3300 41.3100 42.0900 2,956,000
Weekend
Weekend
40.8500 41.8100 40.5800 41.2900 3,731,800
40.7100 41.3200 40.2700 40.7000 3,955,300
39.2200 40.8200 38.6600 40.7200 6,272,300
37.6300 39.0600 37.6000 39.0200 4,067,100
37.6600 37.7600 37.0200 37.6300 2,715,000
Weekend
Weekend
11 · 10-Q After-hours · 16:02 ET 10-Q ↗
37.9300 38.7100 37.4000 37.6600 3,857,600
39.5100 40.8800 37.1900 38.2200 5,095,700
10 · 8-K After-hours · 17:15 ET FORM 8-K ↗
37.3500 37.4200 36.7400 37.1000 2,679,400
36.6600 37.5700 36.4300 37.3300 1,959,500
36.9800 37.1500 36.6400 36.6800 1,316,800
Weekend
Weekend
37.2300 37.5800 36.6800 36.9700 1,513,100
36.8600 37.4000 36.8500 37.1500 2,102,400
36.0700 36.7700 35.9000 36.7000 2,102,000
37.2600 37.4400 35.9000 36.0100 1,771,300
No trading
Weekend
Weekend
37.1500 37.4500 36.8300 37.2700 1,812,800
36.5700 37.3200 36.2900 37.1700 2,430,500
36.2900 36.7700 35.9500 36.4300 2,030,400
35.8800 36.5500 35.7900 36.3700 2,316,200
36.3000 36.3500 35.6600 35.8500 2,284,400
Weekend
Weekend
9 · DEFA14A After-hours · 16:11 ET DEFA14A ↗ 8 · DEF 14A After-hours · 16:04 ET FORM DEF 14A ↗
35.4500 36.3800 35.3900 36.3300 1,927,800
33.8300 36.3000 33.8300 35.5000 2,591,300
34.5900 34.7900 33.7300 33.7800 2,078,000
7 · 8-K After-hours · 16:34 ET FORM 8-K ↗
34.7300 34.9200 34.3200 34.7700 1,946,200
33.5700 35.3000 33.2500 34.9300 2,729,600
Weekend
Weekend
33.6200 33.7900 33.3300 33.6500 995,800
No trading
33.9700 34.1300 33.5200 33.5400 908,800
34.1100 34.2700 33.8500 33.9700 1,044,000
34.0400 34.2200 33.9200 34.1100 854,800
Weekend
Weekend
34.2000 34.2000 33.8900 34.0300 725,400
No trading
34.3200 34.4300 34.0900 34.1800 499,900
34.5000 34.9200 34.0900 34.4100 1,177,500
6 · 8-K After-hours · 16:32 ET FORM 8-K ↗
34.3300 34.7100 34.1700 34.4400 1,068,400
Weekend
Weekend
34.3700 34.6600 34.1200 34.4500 3,703,700
34.5400 35.2100 34.4200 34.5100 2,561,400
34.0000 34.8400 33.9000 34.5400 2,921,900
34.3400 34.4800 34.0400 34.1500 1,942,200
34.5700 34.7400 34.1100 34.4400 1,611,300
Weekend
Weekend
34.8300 35.0000 34.4100 34.5600 2,696,100
34.0700 34.7700 33.8600 34.7500 2,053,200
33.7400 34.0000 33.2700 33.9000 2,574,800
33.4800 34.2000 33.4800 33.7400 2,061,300
34.0300 34.5800 33.2500 33.5800 1,877,000
Weekend
Weekend
35.2000 35.3000 34.0900 34.1400 3,098,500
34.7700 35.6000 34.5800 35.3600 2,345,700
34.6700 34.8100 34.2100 34.7400 1,483,000
34.4800 34.9100 34.1300 34.6000 1,655,600
34.4800 34.9100 34.2200 34.4800 2,356,800
Weekend
Weekend
34.7900 35.1600 34.4000 34.7400 944,500
No trading
34.2900 35.0300 34.2900 34.7800 2,519,000
32.8400 34.2100 32.8400 34.1200 2,940,500
33.0800 33.3000 32.4300 32.7000 4,309,500
Weekend
Weekend
35.1600 35.1800 33.0100 33.0500 5,007,100
5 · 10-K After-hours · 16:11 ET 10-K ↗
35.5500 36.0300 35.0200 35.1900 3,283,800
35.6500 35.7300 35.1100 35.3500 2,780,300
35.6500 35.8500 35.3600 35.6400 2,850,600
36.3700 36.3900 35.5400 35.6900 3,218,000
Weekend
Weekend
37.3800 37.6300 35.8000 36.2100 4,785,300
36.0000 37.7500 35.1100 37.4100 6,250,000
4 · 8-K After-hours · 17:31 ET FORM 8-K ↗
32.1500 32.6000 31.8700 32.4500 3,159,600
32.1100 32.1100 31.5300 31.9900 2,297,900
32.3000 32.5300 31.1800 32.0700 5,187,000
Weekend
Weekend
31.8100 32.4200 31.7300 32.2200 3,841,900
32.5800 33.1700 31.8900 31.9300 1,631,900
31.8900 32.9000 31.8800 32.5800 2,015,700
31.8600 32.1900 31.6900 32.0900 1,455,800
31.8100 31.9500 31.3400 31.8600 2,143,400
Weekend
Weekend
32.1800 32.1800 31.7400 31.9800 1,707,500
31.7700 32.3700 31.5700 32.1800 1,764,900
32.3300 32.8300 31.6100 31.8500 2,250,200
33.4900 33.7000 32.3100 32.5800 2,099,600
33.7900 33.7900 33.1100 33.4800 2,051,100
Weekend
Weekend
33.9500 34.1800 33.3400 33.7800 1,922,400
33.1000 33.8800 33.0600 33.7600 1,879,500
33.8700 33.8900 32.9100 33.0500 2,035,500
33.7600 34.0400 33.0400 33.9600 1,780,800
32.8000 33.5500 32.5900 33.3800 2,068,800
Weekend
Weekend
32.7100 33.0300 32.4600 32.6900 2,135,500
32.6800 32.8900 32.2800 32.8000 2,656,200
33.4300 33.9300 32.4700 32.5000 2,437,400
34.3100 34.4200 32.9900 33.3200 2,830,900
33.9500 34.6600 33.7700 34.5700 2,933,900
Weekend
Weekend
34.3300 34.6200 33.6600 33.9800 2,147,100
34.7600 34.8000 34.1000 34.3000 1,711,000
34.5600 34.8700 34.0100 34.8400 1,665,500
3 · 8-K After-hours · 17:04 ET FORM 8-K ↗
34.0700 34.2800 33.8400 34.2500 1,879,300
33.8600 34.1400 33.6700 33.8700 1,591,900
Weekend
Weekend
33.7100 33.8800 33.2000 33.7400 2,150,900
33.0800 33.8400 32.6700 33.6800 3,011,900
32.5700 33.3300 32.0100 33.1900 3,836,200
33.6300 33.7700 33.1500 33.3800 2,309,300
33.6000 33.8600 32.9700 33.6300 2,364,400
Weekend
Weekend
33.0400 33.4600 32.9100 33.3300 1,581,200
33.3100 33.7700 32.9500 33.1000 2,359,200
34.2800 34.3900 33.6300 33.6400 1,778,700
35.3600 35.5900 34.2600 34.2800 2,185,300
35.8100 35.8500 34.8500 35.2200 2,821,100
Weekend
Weekend
36.6600 36.9000 35.5600 36.0600 4,022,100
36.2000 36.6800 36.0400 36.5300 1,664,000
36.5300 36.8600 36.0600 36.1100 2,443,100
36.2000 36.6200 35.9600 36.4700 2,031,000
36.3100 36.8000 36.1500 36.2400 2,466,900
Weekend
Weekend
36.1500 36.3200 35.9300 36.1400 1,229,400
35.4900 36.2300 35.3500 36.1900 1,399,500
34.8300 35.8200 34.6700 35.6600 2,293,800
35.7100 35.7800 34.9400 35.1000 2,596,500
36.0300 36.0900 35.2100 35.7100 2,225,100
Weekend
Weekend
35.9200 36.2800 35.4800 36.0900 3,259,600
35.9200 35.9900 35.3300 35.6600 2,216,000
36.3000 36.4200 35.5200 35.9600 2,490,700
36.3700 36.6400 36.0000 36.4200 1,693,600
No trading
Weekend
Weekend
36.9100 37.0900 36.2000 36.4200 2,744,900
36.9100 36.9700 36.3600 36.9100 2,372,700
36.9100 37.1700 36.7200 36.9800 2,528,800
36.2400 36.8500 36.2200 36.8100 2,041,600
36.7600 36.9700 36.2900 36.3400 1,099,700
Weekend
Weekend
36.0000 36.9800 35.9300 36.8200 1,374,900
35.4600 35.8400 35.2800 35.8100 1,226,700
36.0300 36.8400 35.5400 35.6600 1,765,400
35.8700 36.3800 35.7000 35.9400 1,836,200
35.8900 36.1300 35.4400 35.6100 1,588,300
Weekend
Weekend
35.7100 35.9400 35.1700 35.8000 2,527,900
36.8900 37.0200 35.8000 35.8600 1,725,000
36.7400 37.2100 36.5700 37.1300 1,339,100
36.8000 36.8700 36.3000 36.7400 1,852,400
36.9100 37.3100 36.7500 36.8200 1,406,800
Weekend
Weekend
37.3900 37.6800 36.8200 36.8700 1,692,400
37.5000 37.8800 36.7900 37.2400 2,036,400
37.3100 37.7200 37.1000 37.2700 3,141,900
36.8700 37.4700 36.8700 37.3700 2,204,400
35.7200 36.5700 35.6200 36.5500 2,225,600
Weekend
Weekend
2 · 10-Q After-hours · 16:05 ET 10-Q ↗
37.0200 37.1300 35.5100 35.8800 2,565,100
38.2400 38.6600 36.4300 36.7400 3,915,200
1 · 8-K After-hours · 17:12 ET FORM 8-K ↗
37.5400 37.7100 37.0800 37.1400 1,867,100
37.5600 37.8500 37.3800 37.5400 1,492,700
38.3000 38.3400 37.4800 37.5600 1,711,000
Weekend
Weekend

Announcement Events

Each title opens the filing on the SEC website. Registered users can summarise the filing and up to seven relevant exhibits linked within the same SEC submission.

15 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:33 ET Summarise
14 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:06 ET Summarise
13 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
12 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 17:00 ET Summarise
11 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:02 ET Summarise
10 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 17:15 ET Summarise
9 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 16:11 ET Summarise
8 DEF 14A FORM DEF 14A (opens SEC filing in a new tab) After-hours · 16:04 ET Summarise
7 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:34 ET Summarise
6 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:32 ET Summarise
5 10-K 10-K (opens SEC filing in a new tab) After-hours · 16:11 ET Summarise
4 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 17:31 ET Summarise
3 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 17:04 ET Summarise
2 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
1 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 17:12 ET Summarise