TETRA TECH INC NEW

Ticker: TTEK CUSIP: 88162G103 Class: EQTY

NORTHERN TRUST CORP's Holding History (CIK: 0000073124)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 2,350,923 Value ($000) $78,850 Avg Close $33.82 Range $31.18 - $37.75

Q3 2025

Shares 2,552,207 Value ($000) $85,193 Avg Close $36.35 Range $32.91 - $38.66

Q2 2025

Shares 2,595,704 Value ($000) $93,342 Avg Close $33.29 Range $27.27 - $36.67

Q1 2025

Shares 2,878,408 Value ($000) $84,193 Avg Close $33.56 Range $28.17 - $42.98

Q4 2024

Shares 2,745,434 Value ($000) $109,378 Avg Close $44.89 Range $39.19 - $51.20

Q3 2024

Shares 2,263,333 Value ($000) $106,739 Avg Close $44.50 Range $39.43 - $48.26

Q2 2024

Shares 466,884 Value ($000) $95,468 Avg Close $40.77 Range $36.50 - $44.28

Q1 2024

Shares 421,833 Value ($000) $77,917 Avg Close $34.64 Range $31.61 - $38.03

Q4 2023

Shares 462,602 Value ($000) $77,222 Avg Close $31.93 Range $28.67 - $33.99

Q3 2023

Shares 459,291 Value ($000) $69,826 Avg Close $32.50 Range $30.19 - $34.65

Q2 2023

Shares 453,586 Value ($000) $74,270 Avg Close $29.41 Range $26.46 - $33.10

Q1 2023

Shares 460,655 Value ($000) $67,675 Avg Close $28.89 Range $26.24 - $31.92

Q4 2022

Shares 455,228 Value ($000) $66,095 Avg Close $28.91 Range $24.57 - $33.93

Q3 2022

Shares 446,567 Value ($000) $57,396 Avg Close $27.98 Range $24.84 - $31.09

Q2 2022

Shares 448,704 Value ($000) $61,271 Avg Close $27.42 Range $23.71 - $33.82

Q1 2022

Shares 771,010 Value ($000) $127,171 Avg Close $30.77 Range $25.33 - $35.29

Q4 2021

Shares 789,361 Value ($000) $134,034 Avg Close $34.44 Range $29.39 - $38.58

Q3 2021

Shares 814,090 Value ($000) $121,576 Avg Close $27.46 Range $24.08 - $30.91

Q2 2021

Shares 813,433 Value ($000) $99,270 Avg Close $25.16 Range $23.20 - $28.95

Q1 2021

Shares 823,519 Value ($000) $111,768 Avg Close $26.50 Range $22.63 - $28.94

Q4 2020

Shares 842,998 Value ($000) $97,603 Avg Close $22.53 Range $19.06 - $25.44

Q3 2020

Shares 869,348 Value ($000) $83,022 Avg Close $17.77 Range $14.99 - $19.31

Q2 2020

Shares 918,746 Value ($000) $72,691 Avg Close $15.19 Range $12.93 - $17.00

Q1 2020

Shares 1,149,617 Value ($000) $81,186 Avg Close $17.03 Range $12.72 - $19.87

Q4 2019

Shares 1,138,635 Value ($000) $98,106 Avg Close $17.32 Range $16.24 - $18.07

Q3 2019

Shares 1,154,489 Value ($000) $100,163 Avg Close $16.34 Range $14.60 - $17.46

Q2 2019

Shares 1,003,402 Value ($000) $78,816 Avg Close $13.48 Range $11.77 - $15.78

Q1 2019

Shares 996,663 Value ($000) $59,391 Avg Close $11.21 Range $9.70 - $12.25

Q4 2018

Shares 992,326 Value ($000) $51,373 Avg Close $12.40 Range $9.76 - $14.51

Q3 2018

Shares 1,000,703 Value ($000) $68,347 Avg Close $13.24 Range $11.60 - $14.44

Q2 2018

Shares 1,001,221 Value ($000) $58,572 Avg Close $10.68 Range $9.26 - $11.77

Q1 2018

Shares 1,017,750 Value ($000) $49,818 Avg Close $9.88 Range $8.93 - $10.68

Q4 2017

Shares 1,018,840 Value ($000) $49,058 Avg Close $9.70 Range $9.21 - $10.18

Q3 2017

Shares 1,041,368 Value ($000) $48,475 Avg Close $8.79 Range $7.99 - $9.67

Q2 2017

Shares 1,075,476 Value ($000) $49,203 Avg Close $8.91 Range $7.98 - $9.55

Q1 2017

Shares 1,051,966 Value ($000) $42,972 Avg Close $8.29 Range $7.77 - $8.97

Q4 2016

Shares 1,038,274 Value ($000) $44,802 Avg Close $8.08 Range $6.96 - $8.86

Q3 2016

Shares 1,187,550 Value ($000) $42,122 Avg Close $6.78 Range $6.02 - $7.25

Q2 2016

Shares 1,181,805 Value ($000) $36,335 Avg Close $5.98 Range $5.60 - $6.35

Q1 2016

Shares 1,156,159 Value ($000) $33,556 Avg Close $5.32 Range $4.57 - $6.01

Q4 2015

Shares 1,077,054 Value ($000) $28,025 Avg Close $5.34 Range $4.76 - $5.64

Q3 2015

Shares 972,000 Value ($000) $23,631 Avg Close $5.12 Range $4.82 - $5.50

Q2 2015

Shares 947,286 Value ($000) $24,289 Avg Close $5.12 Range $4.77 - $5.50

Q1 2015

Shares 923,793 Value ($000) $22,190 Avg Close $4.94 Range $4.60 - $5.40

Q4 2014

Shares 915,049 Value ($000) $24,432 Avg Close $5.23 Range $4.74 - $5.57

Q3 2014

Shares 946,665 Value ($000) $23,648 Avg Close $5.21 Range $4.59 - $5.65

Q2 2014

Shares 930,158 Value ($000) $25,579 Avg Close $5.47 Range $5.05 - $6.00

Q1 2014

Shares 1,054,969 Value ($000) $31,216 Avg Close $5.82 Range $5.47 - $6.18

Q4 2013

Shares 1,027,990 Value ($000) $28,763 Avg Close $5.40 Range $4.77 - $6.00

Q3 2013

Shares 1,067,307 Value ($000) $27,633 Avg Close $4.79 Range $4.44 - $5.21

Q2 2013

Shares 1,038,836 Value ($000) $24,423 Avg Close $5.31 Range $4.51 - $6.11

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	2,350,923	$78,850	$33.82	$31.18 - $37.75
Q3 2025	2,552,207	$85,193	$36.35	$32.91 - $38.66
Q2 2025	2,595,704	$93,342	$33.29	$27.27 - $36.67
Q1 2025	2,878,408	$84,193	$33.56	$28.17 - $42.98
Q4 2024	2,745,434	$109,378	$44.89	$39.19 - $51.20
Q3 2024	2,263,333	$106,739	$44.50	$39.43 - $48.26
Q2 2024	466,884	$95,468	$40.77	$36.50 - $44.28
Q1 2024	421,833	$77,917	$34.64	$31.61 - $38.03
Q4 2023	462,602	$77,222	$31.93	$28.67 - $33.99
Q3 2023	459,291	$69,826	$32.50	$30.19 - $34.65
Q2 2023	453,586	$74,270	$29.41	$26.46 - $33.10
Q1 2023	460,655	$67,675	$28.89	$26.24 - $31.92
Q4 2022	455,228	$66,095	$28.91	$24.57 - $33.93
Q3 2022	446,567	$57,396	$27.98	$24.84 - $31.09
Q2 2022	448,704	$61,271	$27.42	$23.71 - $33.82
Q1 2022	771,010	$127,171	$30.77	$25.33 - $35.29
Q4 2021	789,361	$134,034	$34.44	$29.39 - $38.58
Q3 2021	814,090	$121,576	$27.46	$24.08 - $30.91
Q2 2021	813,433	$99,270	$25.16	$23.20 - $28.95
Q1 2021	823,519	$111,768	$26.50	$22.63 - $28.94
Q4 2020	842,998	$97,603	$22.53	$19.06 - $25.44
Q3 2020	869,348	$83,022	$17.77	$14.99 - $19.31
Q2 2020	918,746	$72,691	$15.19	$12.93 - $17.00
Q1 2020	1,149,617	$81,186	$17.03	$12.72 - $19.87
Q4 2019	1,138,635	$98,106	$17.32	$16.24 - $18.07
Q3 2019	1,154,489	$100,163	$16.34	$14.60 - $17.46
Q2 2019	1,003,402	$78,816	$13.48	$11.77 - $15.78
Q1 2019	996,663	$59,391	$11.21	$9.70 - $12.25
Q4 2018	992,326	$51,373	$12.40	$9.76 - $14.51
Q3 2018	1,000,703	$68,347	$13.24	$11.60 - $14.44
Q2 2018	1,001,221	$58,572	$10.68	$9.26 - $11.77
Q1 2018	1,017,750	$49,818	$9.88	$8.93 - $10.68
Q4 2017	1,018,840	$49,058	$9.70	$9.21 - $10.18
Q3 2017	1,041,368	$48,475	$8.79	$7.99 - $9.67
Q2 2017	1,075,476	$49,203	$8.91	$7.98 - $9.55
Q1 2017	1,051,966	$42,972	$8.29	$7.77 - $8.97
Q4 2016	1,038,274	$44,802	$8.08	$6.96 - $8.86
Q3 2016	1,187,550	$42,122	$6.78	$6.02 - $7.25
Q2 2016	1,181,805	$36,335	$5.98	$5.60 - $6.35
Q1 2016	1,156,159	$33,556	$5.32	$4.57 - $6.01
Q4 2015	1,077,054	$28,025	$5.34	$4.76 - $5.64
Q3 2015	972,000	$23,631	$5.12	$4.82 - $5.50
Q2 2015	947,286	$24,289	$5.12	$4.77 - $5.50
Q1 2015	923,793	$22,190	$4.94	$4.60 - $5.40
Q4 2014	915,049	$24,432	$5.23	$4.74 - $5.57
Q3 2014	946,665	$23,648	$5.21	$4.59 - $5.65
Q2 2014	930,158	$25,579	$5.47	$5.05 - $6.00
Q1 2014	1,054,969	$31,216	$5.82	$5.47 - $6.18
Q4 2013	1,027,990	$28,763	$5.40	$4.77 - $6.00
Q3 2013	1,067,307	$27,633	$4.79	$4.44 - $5.21
Q2 2013	1,038,836	$24,423	$5.31	$4.51 - $6.11