Oceaneering International, Inc.
US ˙ NYSE ˙ US6752321025

SecurityOII / Oceaneering International, Inc.
InstitutionShell Asset Management Co
Latest Disclosed Ownership5,257 shares
Latest Disclosed Value $ 130
Shell Asset Management Co reports 54.04% decrease in ownership of OII / Oceaneering International, Inc.

On November 7, 2025 - Shell Asset Management Co filed a 13F-HR form disclosing ownership of 5,257 shares of Oceaneering International, Inc. (US:OII) valued at $130,268 USD as of September 30, 2025. The entity filed a previous 13F-HR on July 23, 2025 disclosing 11,437 shares of Oceaneering International, Inc.. The current value of the position is $209,123 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2025-11-07 2025-09-30 13F OCEANEERING INTL COM 675232102 5,257 -6,180 -54.04 0 0.0131
2025-07-23 2025-06-30 13F OCEANEERING INTL COM 675232102 11,437 -2,175 -15.98 0 0.0082
2025-05-14 2025-03-31 13F OCEANEERING INTL COM 675232102 13,612 -556 -3.92 0 0.0141
2025-02-14 2024-12-31 13F OCEANEERING INTL COM 675232102 14,168 -25 -0.18 0 0.0162
2024-11-07 2024-09-30 13F OCEANEERING INTL COM 675232102 14,193 0 0.00 0 0.0155
2024-07-25 2024-03-31 13F OCEANEERING INTL COM 675232102 14,193 -144 -1.00 0 0.0153
2024-02-14 2023-12-31 13F OCEANEERING INTL COM 675232102 14,337 -4,306 -23.10 0 0.0141
2023-11-08 2023-09-30 13F OCEANEERING INTL COM 675232102 18,643 -325 -1.71 0 0.0198
2023-07-28 2023-06-30 13F OCEANEERING INTL COM 675232102 18,968 -109 -0.57 0 0.0140
2023-05-15 2023-03-31 13F OCEANEERING INTL COM 675232102 19,077 -67 -0.35 0 0.0139
2023-02-07 2022-12-31 13F OCEANEERING INTL COM 675232102 19,144 -3,885 -16.87 0 -100.00 0.0147
2022-11-14 2022-09-30 13F OCEANEERING INTL COM 675232102 23,029 -6,032 -20.76 183 -40.97 0.0071
2022-08-09 2022-06-30 13F OCEANEERING INTL COM 675232102 29,061 50 0.17 310 -29.55 0.0092
2022-05-04 2022-03-31 13F OCEANEERING INTL COM 675232102 29,011 -4,294 -12.89 440 16.71 0.0104
2022-02-09 2021-12-31 13F OCEANEERING INTL COM 675232102 33,305 158 0.48 377 -14.71 0.0077
2021-11-04 2021-09-30 13F OCEANEERING INTL COM 675232102 33,147 -39,885 -54.61 442 -61.13 0.0099
2021-08-12 2021-06-30 13F OCEANEERING INTL COM 675232102 73,032 -13,649 -15.75 1,137 14.85 0.0220
2021-05-10 2021-03-31 13F OCEANEERING INTL COM 675232102 86,681 -500 -0.57 990 42.86 0.0198
2021-02-16 2020-12-31 13F OCEANEERING INTL COM 675232102 87,181 50,391 136.97 693 433.08 0.0143
2020-11-13 2020-09-30 13F OCEANEERING INTL COM 675232102 36,790 0 0.00 130 -44.68 0.0030
2020-08-10 2020-06-30 13F OCEANEERING INTL COM 675232102 36,790 16,590 82.13 235 298.31 0.0059
2020-05-11 2020-03-31 13F OCEANEERING INTL COM 675232102 20,200 -306 -1.49 59 -80.72 0.0016
2020-02-13 2019-12-31 13F OCEANEERING INTL COM 675232102 20,506 -543 -2.58 306 7.37 0.0066
2019-11-12 2019-09-30 13F OCEANEERING INTL COM 675232102 21,049 -186 -0.88 285 -34.18 0.0065
2019-08-12 2019-06-30 13F OCEANEERING INTL COM 675232102 21,235 -482 -2.22 433 26.61 0.0096
2019-05-09 2019-03-31 13F OCEANEERING INTL COM 675232102 21,717 0 0.00 342 30.04 0.0075
2019-02-13 2018-12-31 13F OCEANEERING INTL COM 675232102 21,717 -1,800 -7.65 263 -59.48 0.0066
2018-11-13 2018-09-30 13F OCEANEERING INTL COM 675232102 23,517 0 0.00 649 8.35 0.0128
2018-08-10 2018-06-30 13F OCEANEERING INTL COM 675232102 23,517 -1,254 -5.06 599 30.50 0.0123
2018-05-14 2018-03-31 13F OCEANEERING INTL COM 675232102 24,771 0 0.00 459 -12.40 0.0091
2018-02-09 2017-12-31 13F OCEANEERING INTL COM 675232102 24,771 0 0.00 524 -19.51 0.0104
2017-10-20 2017-09-30 13F/A-1 OCEANEERING INTL COM 675232102 24,771 -600 -2.36 651 12.44 0.0145
2017-10-18 2017-09-30 13F OCEANEERING INTL COM 675232102 53,055 27,684 3,458
2017-07-26 2017-06-30 13F OCEANEERING INTL COM 675232102 25,371 0 0.00 579 -15.72 0.0144
2017-04-26 2017-03-31 13F OCEANEERING INTL COM 675232102 25,371 -1,778 -6.55 687 -10.31 0.0175
2017-01-10 2016-12-31 13F OCEANEERING INTL COM 675232102 27,149 -243 -0.89 766 1.59 0.0207
2016-10-28 2016-09-30 13F OCEANEERING INTL COM 675232102 27,392 -51,677 -65.36 754 -68.06 0.0180
2016-07-25 2016-06-30 13F OCEANEERING INTL COM 675232102 79,069 7,533 10.53 2,361 -0.71 0.0548
2016-05-11 2016-03-31 13F OCEANEERING INTL COM 675232102 71,536 22,357 45.46 2,378 28.89 0.0569
2016-02-05 2015-12-31 13F OCEANEERING INTL COM 675232102 49,179 -3,876 -7.31 1,845 -46.65 0.0436
2015-10-13 2015-09-30 13F OCEANEERING INTL COM 675232102 53,055 11,381 27.31 3,458 78.06 0.0548
2015-07-30 2015-06-30 13F OCEANEERING INTL COM 675232102 41,674 -1,933 -4.43 1,942 -17.43 0.0389
2015-05-07 2015-03-31 13F OCEANEERING INTL COM 675232102 43,607 43,607 0.00 2,352 0.0410
2015-02-04 2014-12-31 13F OCEANEERING INTL COM 675232102 0 -53,055 -100.00 0 -100.00
2014-10-24 2014-09-30 13F OCEANEERING INTL COM 675232102 53,055 3,200 6.42 3,458 -11.22 0.0537
2014-08-08 2014-06-30 13F OCEANEERING INTL COM 675232102 49,855 -32 -0.06 3,895 8.65 0.0600
2014-05-07 2014-03-31 13F OCEANEERING INTL COM 675232102 49,887 -124 -0.25 3,585 -9.13 0.0596
2014-02-03 2013-12-31 13F/A-1 OCEANEERING INTL COM 675232102 50,011 -2,952 -5.57 3,945 -8.32 0.0671
2014-01-27 2013-12-31 13F OCEANEERING INTL COM 675232102 50,011 3,945
2013-10-28 2013-09-30 13F OCEANEERING INTL COM 675232102 52,963 -4,614 -8.01 4,303 3.51 0.0790
2013-08-01 2013-06-30 13F OCEANEERING INTL COM 675232102 57,577 57,577 4,157 0.0791
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.