OIL STS INTL INC

Ticker: OIS CUSIP: 678026105 Class: Common Stock

MASSACHUSETTS FINANCIAL SERVICES CO /MA/'s Holding History (CIK: 0000912938)

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

Q4 2025

Shares 382,561 Value ($000) $2,590 Avg Close $6.42 Range $5.50 - $7.19

Q3 2025

Shares 395,218 Value ($000) $2,395 Avg Close $5.48 Range $4.75 - $6.42

Q2 2025

Shares 36,818 Value ($000) $197 Avg Close $4.42 Range $3.08 - $5.81

Q3 2024

Shares 22,837 Value ($000) $105 Avg Close $4.79 Range $4.03 - $5.83

Q2 2024

Shares 23,392 Value ($000) $104 Avg Close $4.81 Range $3.91 - $6.53

Q1 2024

Shares 22,606 Value ($000) $139 Avg Close $5.97 Range $5.22 - $6.95

Q4 2023

Shares 22,656 Value ($000) $154 Avg Close $7.24 Range $6.32 - $8.38

Q3 2023

Shares 23,373 Value ($000) $196 Avg Close $8.10 Range $7.19 - $9.02

Q2 2019

Shares 1,434,793 Value ($000) $26,257 Avg Close $17.92 Range $15.79 - $21.27

Q1 2019

Shares 1,411,623 Value ($000) $23,941 Avg Close $16.91 Range $13.78 - $18.86

Q4 2018

Shares 1,390,468 Value ($000) $19,856 Avg Close $23.01 Range $13.20 - $34.66

Q3 2018

Shares 1,374,206 Value ($000) $45,624 Avg Close $32.65 Range $29.30 - $37.39

Q2 2018

Shares 1,302,523 Value ($000) $41,811 Avg Close $33.64 Range $25.25 - $38.95

Q1 2018

Shares 1,297,450 Value ($000) $33,993 Avg Close $28.65 Range $23.65 - $34.72

Q4 2017

Shares 1,278,922 Value ($000) $36,194 Avg Close $24.24 Range $20.23 - $29.15

Q3 2017

Shares 1,241,142 Value ($000) $31,463 Avg Close $24.59 Range $20.90 - $28.85

Q2 2017

Shares 1,211,545 Value ($000) $32,894 Avg Close $29.62 Range $25.25 - $33.75

Q1 2017

Shares 1,066,419 Value ($000) $35,352 Avg Close $36.69 Range $30.25 - $41.25

Q4 2016

Shares 920,960 Value ($000) $35,918 Avg Close $33.97 Range $28.00 - $41.75

Q3 2016

Shares 922,401 Value ($000) $29,120 Avg Close $30.74 Range $27.07 - $33.79

Q2 2016

Shares 919,359 Value ($000) $30,229 Avg Close $32.41 Range $28.46 - $36.73

Q1 2016

Shares 710,777 Value ($000) $22,404 Avg Close $27.00 Range $21.44 - $33.05

Q4 2015

Shares 666,383 Value ($000) $18,159 Avg Close $29.75 Range $24.24 - $33.14

Q3 2015

Shares 607,330 Value ($000) $15,869 Avg Close $29.60 Range $23.35 - $37.27

Q2 2015

Shares 22,807 Value ($000) $849,105 Avg Close $42.08 Range $36.30 - $48.16

Q1 2015

Shares 16,679 Value ($000) $663,324 Avg Close $42.31 Range $38.41 - $49.31

Q4 2014

Shares 6,575 Value ($000) $321,518 Avg Close $54.06 Range $41.51 - $62.34

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	382,561	$2,590	$6.42	$5.50 - $7.19
Q3 2025	395,218	$2,395	$5.48	$4.75 - $6.42
Q2 2025	36,818	$197	$4.42	$3.08 - $5.81
Q3 2024	22,837	$105	$4.79	$4.03 - $5.83
Q2 2024	23,392	$104	$4.81	$3.91 - $6.53
Q1 2024	22,606	$139	$5.97	$5.22 - $6.95
Q4 2023	22,656	$154	$7.24	$6.32 - $8.38
Q3 2023	23,373	$196	$8.10	$7.19 - $9.02
Q2 2019	1,434,793	$26,257	$17.92	$15.79 - $21.27
Q1 2019	1,411,623	$23,941	$16.91	$13.78 - $18.86
Q4 2018	1,390,468	$19,856	$23.01	$13.20 - $34.66
Q3 2018	1,374,206	$45,624	$32.65	$29.30 - $37.39
Q2 2018	1,302,523	$41,811	$33.64	$25.25 - $38.95
Q1 2018	1,297,450	$33,993	$28.65	$23.65 - $34.72
Q4 2017	1,278,922	$36,194	$24.24	$20.23 - $29.15
Q3 2017	1,241,142	$31,463	$24.59	$20.90 - $28.85
Q2 2017	1,211,545	$32,894	$29.62	$25.25 - $33.75
Q1 2017	1,066,419	$35,352	$36.69	$30.25 - $41.25
Q4 2016	920,960	$35,918	$33.97	$28.00 - $41.75
Q3 2016	922,401	$29,120	$30.74	$27.07 - $33.79
Q2 2016	919,359	$30,229	$32.41	$28.46 - $36.73
Q1 2016	710,777	$22,404	$27.00	$21.44 - $33.05
Q4 2015	666,383	$18,159	$29.75	$24.24 - $33.14
Q3 2015	607,330	$15,869	$29.60	$23.35 - $37.27
Q2 2015	22,807	$849,105	$42.08	$36.30 - $48.16
Q1 2015	16,679	$663,324	$42.31	$38.41 - $49.31
Q4 2014	6,575	$321,518	$54.06	$41.51 - $62.34