Oceaneering International, Inc.
US ˙ NYSE ˙ US6752321025

SecurityOII / Oceaneering International, Inc.
InstitutionEngineers Gate Manager LP
Latest Disclosed Ownership24,050 shares
Latest Disclosed Value $ 853,054
Engineers Gate Manager LP reports 72.84% decrease in ownership of OII / Oceaneering International, Inc.

On May 15, 2026 - Engineers Gate Manager LP filed a 13F-HR form disclosing ownership of 24,050 shares of Oceaneering International, Inc. (US:OII) valued at $853,054 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 88,549 shares of Oceaneering International, Inc.. This represents a change in shares of -72.84% during the quarter. The current value of the position is $913,660 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)
2026-05-15 2026-03-31 13F OCEANEERING INTL COM 675232102 24,050 -64,499 -72.84 853 -59.90 0.0107
2026-02-17 2025-12-31 13F OCEANEERING INTL COM 675232102 88,549 -42,113 -32.23 2,128 -34.29 0.0252
2025-11-14 2025-09-30 13F OCEANEERING INTL COM 675232102 130,662 47,072 56.31 3,238 87.00 0.0371
2025-08-14 2025-06-30 13F OCEANEERING INTL COM 675232102 83,590 8,874 11.88 1,732 6.26 0.0215
2025-05-15 2025-03-31 13F OCEANEERING INTL COM 675232102 74,716 38,668 107.27 1,630 73.30 0.0275
2025-02-14 2024-12-31 13F OCEANEERING INTL COM 675232102 36,048 36,048 940 0.0164
2024-11-14 2024-09-30 13F OCEANEERING INTL COM 675232102 0 -14,507 -100.00 0 -100.00
2024-08-14 2024-06-30 13F OCEANEERING INTL COM 675232102 14,507 14,507 343 0.0077
2024-05-15 2024-03-31 13F OCEANEERING INTL COM 675232102 0 -13,770 -100.00 0 -100.00
2024-02-14 2023-12-31 13F OCEANEERING INTL COM 675232102 13,770 -6,982 -33.64 293 -45.03 0.0084
2023-11-14 2023-09-30 13F OCEANEERING INTL COM 675232102 20,752 -19,087 -47.91 534 -28.36 0.0197
2023-08-14 2023-06-30 13F OCEANEERING INTL COM 675232102 39,839 -8,698 -17.92 745 -12.98 0.0282
2023-05-15 2023-03-31 13F OCEANEERING INTL COM 675232102 48,537 48,537 856 0.0358
2023-02-14 2022-12-31 13F OCEANEERING INTL COM 675232102 0 -99,896 -100.00 0 -100.00
2022-11-14 2022-09-30 13F OCEANEERING INTL COM 675232102 99,896 99,896 795 0.0495
2022-08-15 2022-06-30 13F OCEANEERING INTL COM 675232102 0 -21,452 -100.00 0 -100.00
2022-05-16 2022-03-31 13F OCEANEERING INTL COM 675232102 21,452 -46,779 -68.56 325 -57.90 0.0127
2022-02-14 2021-12-31 13F OCEANEERING INTL COM 675232102 68,231 5,889 9.45 772 -6.99 0.0347
2021-11-15 2021-09-30 13F OCEANEERING INTL COM 675232102 62,342 18,240 41.36 830 20.82 0.0473
2021-08-16 2021-06-30 13F OCEANEERING INTL COM 675232102 44,102 -49,905 -53.09 687 -36.03 0.0442
2021-05-17 2021-03-31 13F OCEANEERING INTL COM 675232102 94,007 -44,378 -32.07 1,074 -2.36 0.0532
2021-02-16 2020-12-31 13F OCEANEERING INTL COM 675232102 138,385 -94,232 -40.51 1,100 34.31 0.0477
2020-11-16 2020-09-30 13F OCEANEERING INTL COM 675232102 232,617 183,097 369.74 819 159.18 0.0384
2020-08-17 2020-06-30 13F OCEANEERING INTL COM 675232102 49,520 -81,368 -62.17 316 -17.92 0.0161
2020-05-15 2020-03-31 13F OCEANEERING INTL COM 675232102 130,888 118,140 926.73 385 102.63 0.0277
2020-02-14 2019-12-31 13F OCEANEERING INTL COM 675232102 12,748 -116,313 -90.12 190 -89.14 0.0084
2019-11-14 2019-09-30 13F OCEANEERING INTL COM 675232102 129,061 129,061 1,749 0.0888
2019-05-15 2019-03-31 13F OCEANEERING INTL COM 675232102 0 -125,729 -100.00 0 -100.00
2019-02-14 2018-12-31 13F OCEANEERING INTL COM 675232102 125,729 125,729 1,521 0.1217
2018-11-01 2018-09-30 13F OCEANEERING INTL COM 675232102 0 -8,545 -100.00 0 -100.00
2018-08-03 2018-06-30 13F OCEANEERING INTL COM 675232102 8,545 -128,414 -93.76 218 -91.41 0.0170
2018-05-07 2018-03-31 13F OCEANEERING INTL COM 675232102 136,959 111,671 441.60 2,539 374.58 0.1692
2018-02-01 2017-12-31 13F OCEANEERING INTL COM 675232102 25,288 -39,118 -60.74 535 -68.38 0.0367
2017-11-13 2017-09-30 13F OCEANEERING INTL COM 675232102 64,406 42,742 197.30 1,692 241.82 0.1424
2017-08-10 2017-06-30 13F OCEANEERING INTL COM 675232102 21,664 -19,312 -47.13 495 -55.41 0.0446
2017-05-05 2017-03-31 13F OCEANEERING INTL COM 675232102 40,976 -76,847 -65.22 1,110 -66.61 0.1102
2017-02-10 2016-12-31 13F OCEANEERING INTL COM 675232102 117,823 78,512 199.72 3,324 207.49 0.3567
2016-11-09 2016-09-30 13F OCEANEERING INTL COM 675232102 39,311 13,711 53.56 1,081 41.49 0.1126
2016-08-11 2016-06-30 13F OCEANEERING INTL COM 675232102 25,600 15,227 146.79 764 121.45 0.0548
2016-05-09 2016-03-31 13F OCEANEERING INTL COM 675232102 10,373 -34,164 -76.71 345 -79.35 0.0269
2016-02-05 2015-12-31 13F OCEANEERING INTL COM 675232102 44,537 44,537 0.00 1,671 0.1128
2015-11-16 2015-09-30 13F OCEANEERING INTL COM 675232102 0 -32,525 -100.00 0 -100.00
2015-08-14 2015-06-30 13F OCEANEERING INTL COM 675232102 32,525 26,366 428.09 1,515 356.33 0.1483
2015-05-15 2015-03-31 13F OCEANEERING INTL COM 675232102 6,159 -3,841 -38.41 332 -43.54 0.0442
2015-02-17 2014-12-31 13F OCEANEERING INTL COM 675232102 10,000 10,000 588 0.1674
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.