GEOSPACE TECHNOLOGIES CORP

Ticker: GEOS CUSIP: 37364X109 Class: Common Stock

VANGUARD GROUP INC's Holding History (CIK: 0000102909)

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

Q4 2025

Shares 648,222 Value ($000) $10,961 Avg Close $20.08 Range $10.78 - $29.89

Q3 2025

Shares 634,463 Value ($000) $12,029 Avg Close $16.20 Range $10.22 - $21.90

Q2 2025

Shares 658,718 Value ($000) $9,393 Avg Close $7.46 Range $5.51 - $18.99

Q1 2025

Shares 736,111 Value ($000) $5,307 Avg Close $8.58 Range $7.02 - $10.46

Q4 2024

Shares 737,529 Value ($000) $7,390 Avg Close $11.13 Range $9.68 - $13.79

Q3 2024

Shares 739,242 Value ($000) $7,644 Avg Close $9.56 Range $8.09 - $10.81

Q2 2024

Shares 727,901 Value ($000) $6,537 Avg Close $11.24 Range $8.49 - $14.83

Q1 2024

Shares 665,985 Value ($000) $8,784 Avg Close $13.43 Range $11.40 - $17.09

Q4 2023

Shares 665,985 Value ($000) $8,631 Avg Close $12.23 Range $10.35 - $13.74

Q3 2023

Shares 662,585 Value ($000) $8,580 Avg Close $9.44 Range $7.22 - $14.59

Q2 2023

Shares 660,785 Value ($000) $5,134 Avg Close $7.94 Range $6.60 - $9.16

Q1 2023

Shares 756,168 Value ($000) $5,331 Avg Close $5.54 Range $3.96 - $7.55

Q4 2022

Shares 360,382 Value ($000) $1,521 Avg Close $4.33 Range $3.76 - $4.88

Q3 2022

Shares 263,646 Value ($000) $1,163 Avg Close $4.69 Range $4.10 - $5.45

Q2 2022

Shares 585,254 Value ($000) $2,774 Avg Close $5.71 Range $4.64 - $6.94

Q1 2022

Shares 585,254 Value ($000) $3,365 Avg Close $6.59 Range $4.97 - $8.88

Q4 2021

Shares 587,696 Value ($000) $3,932 Avg Close $8.73 Range $6.41 - $10.27

Q3 2021

Shares 588,435 Value ($000) $5,619 Avg Close $9.22 Range $7.78 - $10.94

Q2 2021

Shares 588,435 Value ($000) $4,761 Avg Close $8.23 Range $7.30 - $9.47

Q1 2021

Shares 643,273 Value ($000) $5,867 Avg Close $9.62 Range $8.15 - $12.40

Q4 2020

Shares 743,406 Value ($000) $6,364 Avg Close $6.84 Range $5.02 - $10.29

Q3 2020

Shares 910,347 Value ($000) $5,626 Avg Close $6.83 Range $5.64 - $8.15

Q2 2020

Shares 835,925 Value ($000) $6,286 Avg Close $6.66 Range $5.00 - $9.57

Q1 2020

Shares 866,059 Value ($000) $5,543 Avg Close $11.89 Range $4.61 - $16.96

Q4 2019

Shares 828,813 Value ($000) $13,899 Avg Close $15.19 Range $13.18 - $17.66

Q3 2019

Shares 790,885 Value ($000) $12,156 Avg Close $14.43 Range $11.61 - $16.61

Q2 2019

Shares 780,702 Value ($000) $11,797 Avg Close $13.76 Range $11.85 - $15.89

Q1 2019

Shares 771,464 Value ($000) $9,983 Avg Close $14.62 Range $10.01 - $16.92

Q4 2018

Shares 758,888 Value ($000) $7,824 Avg Close $13.38 Range $9.93 - $15.93

Q3 2018

Shares 796,974 Value ($000) $10,918 Avg Close $13.80 Range $12.68 - $15.12

Q2 2018

Shares 599,450 Value ($000) $8,428 Avg Close $11.58 Range $9.46 - $14.81

Q1 2018

Shares 703,721 Value ($000) $6,946 Avg Close $12.26 Range $9.18 - $15.66

Q4 2017

Shares 755,341 Value ($000) $9,796 Avg Close $15.45 Range $12.09 - $18.71

Q3 2017

Shares 736,996 Value ($000) $13,133 Avg Close $15.21 Range $13.08 - $17.99

Q2 2017

Shares 707,253 Value ($000) $9,781 Avg Close $15.37 Range $13.59 - $17.04

Q1 2017

Shares 634,973 Value ($000) $10,305 Avg Close $18.95 Range $13.80 - $24.37

Q4 2016

Shares 581,546 Value ($000) $11,841 Avg Close $20.24 Range $16.77 - $23.20

Q3 2016

Shares 578,535 Value ($000) $11,270 Avg Close $17.28 Range $14.51 - $19.96

Q2 2016

Shares 552,187 Value ($000) $9,039 Avg Close $16.29 Range $11.82 - $19.92

Q1 2016

Shares 526,040 Value ($000) $6,492 Avg Close $11.02 Range $7.62 - $14.69

Q4 2015

Shares 440,211 Value ($000) $6,194 Avg Close $14.23 Range $10.16 - $18.91

Q3 2015

Shares 550,628 Value ($000) $7,604 Avg Close $16.62 Range $13.44 - $23.45

Q2 2015

Shares 717,914 Value ($000) $16,548 Avg Close $20.88 Range $15.59 - $26.75

Q1 2015

Shares 744,291 Value ($000) $12,288 Avg Close $20.77 Range $14.95 - $28.88

Q4 2014

Shares 892,061 Value ($000) $23,640 Avg Close $29.00 Range $24.07 - $35.32

Q3 2014

Shares 845,823 Value ($000) $29,731 Avg Close $41.90 Range $34.01 - $55.50

Q2 2014

Shares 860,321 Value ($000) $47,387 Avg Close $56.24 Range $41.63 - $66.84

Q1 2014

Shares 849,960 Value ($000) $56,242 Avg Close $76.66 Range $60.70 - $94.82

Q4 2013

Shares 824,149 Value ($000) $78,154 Avg Close $91.95 Range $79.60 - $107.93

Q3 2013

Shares 812,247 Value ($000) $68,472 Avg Close $74.50 Range $66.87 - $84.82

Q2 2013

Shares 841,796 Value ($000) $58,151 Avg Close $83.42 Range $65.31 - $108.86

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	648,222	$10,961	$20.08	$10.78 - $29.89
Q3 2025	634,463	$12,029	$16.20	$10.22 - $21.90
Q2 2025	658,718	$9,393	$7.46	$5.51 - $18.99
Q1 2025	736,111	$5,307	$8.58	$7.02 - $10.46
Q4 2024	737,529	$7,390	$11.13	$9.68 - $13.79
Q3 2024	739,242	$7,644	$9.56	$8.09 - $10.81
Q2 2024	727,901	$6,537	$11.24	$8.49 - $14.83
Q1 2024	665,985	$8,784	$13.43	$11.40 - $17.09
Q4 2023	665,985	$8,631	$12.23	$10.35 - $13.74
Q3 2023	662,585	$8,580	$9.44	$7.22 - $14.59
Q2 2023	660,785	$5,134	$7.94	$6.60 - $9.16
Q1 2023	756,168	$5,331	$5.54	$3.96 - $7.55
Q4 2022	360,382	$1,521	$4.33	$3.76 - $4.88
Q3 2022	263,646	$1,163	$4.69	$4.10 - $5.45
Q2 2022	585,254	$2,774	$5.71	$4.64 - $6.94
Q1 2022	585,254	$3,365	$6.59	$4.97 - $8.88
Q4 2021	587,696	$3,932	$8.73	$6.41 - $10.27
Q3 2021	588,435	$5,619	$9.22	$7.78 - $10.94
Q2 2021	588,435	$4,761	$8.23	$7.30 - $9.47
Q1 2021	643,273	$5,867	$9.62	$8.15 - $12.40
Q4 2020	743,406	$6,364	$6.84	$5.02 - $10.29
Q3 2020	910,347	$5,626	$6.83	$5.64 - $8.15
Q2 2020	835,925	$6,286	$6.66	$5.00 - $9.57
Q1 2020	866,059	$5,543	$11.89	$4.61 - $16.96
Q4 2019	828,813	$13,899	$15.19	$13.18 - $17.66
Q3 2019	790,885	$12,156	$14.43	$11.61 - $16.61
Q2 2019	780,702	$11,797	$13.76	$11.85 - $15.89
Q1 2019	771,464	$9,983	$14.62	$10.01 - $16.92
Q4 2018	758,888	$7,824	$13.38	$9.93 - $15.93
Q3 2018	796,974	$10,918	$13.80	$12.68 - $15.12
Q2 2018	599,450	$8,428	$11.58	$9.46 - $14.81
Q1 2018	703,721	$6,946	$12.26	$9.18 - $15.66
Q4 2017	755,341	$9,796	$15.45	$12.09 - $18.71
Q3 2017	736,996	$13,133	$15.21	$13.08 - $17.99
Q2 2017	707,253	$9,781	$15.37	$13.59 - $17.04
Q1 2017	634,973	$10,305	$18.95	$13.80 - $24.37
Q4 2016	581,546	$11,841	$20.24	$16.77 - $23.20
Q3 2016	578,535	$11,270	$17.28	$14.51 - $19.96
Q2 2016	552,187	$9,039	$16.29	$11.82 - $19.92
Q1 2016	526,040	$6,492	$11.02	$7.62 - $14.69
Q4 2015	440,211	$6,194	$14.23	$10.16 - $18.91
Q3 2015	550,628	$7,604	$16.62	$13.44 - $23.45
Q2 2015	717,914	$16,548	$20.88	$15.59 - $26.75
Q1 2015	744,291	$12,288	$20.77	$14.95 - $28.88
Q4 2014	892,061	$23,640	$29.00	$24.07 - $35.32
Q3 2014	845,823	$29,731	$41.90	$34.01 - $55.50
Q2 2014	860,321	$47,387	$56.24	$41.63 - $66.84
Q1 2014	849,960	$56,242	$76.66	$60.70 - $94.82
Q4 2013	824,149	$78,154	$91.95	$79.60 - $107.93
Q3 2013	812,247	$68,472	$74.50	$66.87 - $84.82
Q2 2013	841,796	$58,151	$83.42	$65.31 - $108.86