HOUSTON, July 26, 2023 – Oceaneering International, Inc. ("Oceaneering") (NYSE:OII) today reported net income of $19.0 million, or $0.19 per share, on revenue of $598 million for the three months ended June 30, 2023. Adjusted net income was $18.7 million, or $0.18 per share, reflecting the impact of $4.8 million of pre-tax adjustments associated with foreign exchange losses recognized during the quarter, $(2.3) million tax effect on adjustments associated with foreign exchange losses and $(2.8) million of discrete tax adjustments, primarily due to changes in valuation allowances and uncertain tax positions.

During the prior quarter ended March 31, 2023, Oceaneering reported net income of $4.1 million, or $0.04 per share, on revenue of $537 million. Adjusted net income was $5.4 million, or $0.05 per share, reflecting the impact of $0.3 million of pre-tax adjustments associated with foreign exchange gains recognized during the quarter and $1.5 million of discrete tax adjustments, primarily due to changes in valuation allowances and share-based compensation.

Adjusted net income (loss) and earnings (loss) per share; EBITDA and adjusted EBITDA (as well as EBITDA and adjusted EBITDA margins); and free cash flow are non-GAAP measures that exclude the impacts of certain identified items. Reconciliations to the corresponding GAAP measures are shown in the tables Adjusted Net Income (Loss) and Diluted Earnings (Loss) per Share (EPS), EBITDA and Adjusted EBITDA and Margins, Free Cash Flow, 2023 Adjusted EBITDA and Free Cash Flow Estimates, and EBITDA and Adjusted EBITDA and Margins by Segment. These tables are included below under the caption Reconciliations of Non-GAAP to GAAP Financial Information.

For the second quarter of 2023:

•Net income was $19.0 million and consolidated adjusted EBITDA was $74.8 million

•Consolidated operating income was $49.2 million

•Cash position decreased by $1.0 million, from $505 million to $504 million

As of June 30, 2023:

•Remotely Operated Vehicles (ROV): fleet count was 250; Q2 utilization was 70%; and Q2 average revenue per day on hire was $9,077

•Manufactured Products backlog was $418 million

Revised guidance for 2023:

•Net income in the range of $75 million to $90 million

•Consolidated adjusted EBITDA in the range of $275 million to $310 million

•Free cash flow generation in the range of $90 million to $130 million

•Capital expenditures in the range of $90 million to $110 million

Roderick A. Larson, President and Chief Executive Officer of Oceaneering, stated, "Our energy-focused activity levels continue to increase, and we remain confident that the resurgence in offshore activity remains firmly in place. Based on our year-to-date results and our current expectations for the second half of 2023, we are narrowing our adjusted EBITDA guidance by raising the lower bound of the previous range and adjusting the range higher for our projected free cash flow. We now expect to generate between $275 million and $310 million of adjusted EBITDA and $90 million to $130 million of free cash flow for the full year.

“We produced operating income of $49.2 million in the second quarter of 2023, our highest quarterly operating income since 2015. Our energy-focused businesses are demonstrating quantifiable improvements from accelerating deepwater fundamentals. For the first half of 2023, our energy segments generated an 18% increase in revenue and nearly a 100% increase in operating income as compared with the first half of 2022. We expect these strong offshore market dynamics to continue for the foreseeable future, with robust bidding activity supporting our expectation for growing backlog and increasing activity in our energy segments. Market dynamics are also favorable for our Aerospace and Defense Technologies (ADTech) segment.

“Our second quarter 2023 results increased significantly compared to the first quarter of 2023, as we generated adjusted EBITDA of $74.8 million. This result was slightly outside the low end of the guidance range provided at the beginning of the quarter, primarily due to negative impacts from higher project costs in our entertainment business and project delays in our Offshore Projects Group (OPG) segment. During the second quarter of 2023, all of our operating segments generated higher revenue and, with the exception of our Manufactured Products segment, each of our operating segments reported operating income growth, led by the increases in our OPG and Subsea Robotics (SSR) segments.

"Sequentially, SSR revenue increased over 10% and operating income increased significantly as expected, with healthy demand for ROV and tooling services being slightly offset by some project delays and related vessel preparation costs in our survey business. SSR EBITDA margin of 30% improved slightly as compared to the first quarter of 2023.

"Second quarter 2023 ROV days on hire were sequentially higher by 13% with increases for both drill support and vessel-based services. Fleet utilization rose, averaging 70% for the quarter as compared to 63% during the first quarter. Average ROV revenue per day on hire of $9,077 for the quarter was 2% lower than the first quarter of 2023. The decline in average ROV revenue per day on hire was primarily due to increased equipment standby rates, which do not include crewing charges. This slight decline in average revenue per day on hire does not change our expectation for continued growth in average revenue per day on hire for 2023.

"Manufactured Products generated second quarter 2023 operating income of $10.6 million on an 11% sequential increase in revenue. Revenue increased primarily due to the receipt of certain umbilical materials that did not contribute to current quarter operating results. Operating results declined modestly as compared to the first quarter of 2023 with project losses in our entertainment business offsetting consistent positive energy-related manufacturing performance.

Our Manufactured Products backlog on June 30, 2023 declined to $418 million, compared to our March 31, 2023 backlog of $446 million. Bidding activity remains strong in our energy and autonomous mobile robotics (AMR) businesses. Our book-to-bill ratio was 0.79 for the six months ended June 30, 2023, and 1.19 for the trailing 12 months.

"Second quarter 2023 OPG revenue and operating income increased significantly compared to the first quarter of 2023, primarily due to greater activity and utilization across all geographic regions and partially offset by certain planned installation work in the Gulf of Mexico shifting into the third quarter of 2023. Operating income margin improved, from 5% in the first quarter of 2023 to 13% in the second quarter of 2023, as a result of higher overall utilization driven by seasonal demand.

"Integrity Management and Digital Solutions (IMDS) second quarter 2023 operating income was higher on a 5% increase in revenue as compared to the previous quarter. An increase in scope on several international projects contributed to the revenue increase. Operating income margin of 6% improved slightly from 5% recorded in the first quarter of 2023.

"ADTech second quarter 2023 operating income increased as compared to the first quarter of 2023 on a 3% increase in revenue. Operating income margin of 12% increased as expected from the 9% margin achieved in the first quarter of 2023. At the corporate level for the second quarter of 2023, Unallocated Expenses of $36.0 million remained relatively flat as compared to the first quarter of 2023.

"On a consolidated basis, we expect a sequential increase in third quarter 2023 results, with Adjusted EBITDA in the range of $75 million to $85 million on a high-single digit percentage increase in revenue. For the third quarter, as compared to the second quarter, we anticipate increased revenue and operating results in our SSR and OPG segments on continuing robust offshore activity. Operating income margin for Manufactured Products is projected to be in the mid-single digit range on a mid-teens percentage increase in revenue. IMDS revenue is forecast to be relatively flat with operating income margin remaining in the mid-single digit range. We expect improved operating income and operating income margin for ADTech on a modest improvement in revenue. Unallocated Expenses, based on our improved outlook, are forecast to be in the mid-$40 million range as we anticipate higher accruals for performance-based incentive compensation to be booked during the third quarter of 2023.

"For the full year of 2023, at the segment level, as compared to 2022:

•For SSR, we expect operating income to improve significantly on a high-teens percentage increase in revenue, and EBITDA margin to average in the low 30% range. ROV fleet utilization is expected to average in the mid- to high-60% range for the year.

•For Manufactured Products, we forecast a significant increase in revenue and operating income, as compared to 2022. Although we expect lower operating income margin during the second half of the year as a result of changes in project mix, we continue to expect operating margin for the full year to improve over 2022, averaging in the mid-single digit percentage range for the year. Bidding activity in our energy and AMR businesses remains robust and we continue to expect our full-year book-to-bill ratio to be in the range of 1.2 to 1.4.

•For OPG, we expect slightly higher revenue, significantly higher operating income results and improved operating income margin to the low- to mid-teens percentage range, driven by more efficient vessel utilization and increased international activity. Robust offshore activity is expected to continue through the fourth quarter.

•For IMDS, we forecast relatively flat operating income results on modestly higher revenue, with operating income margin remaining in the mid-single digit percentage range for the year.

•For ADTech, we expect higher operating income results on increased revenue with an annual operating income margin in the low-teens percentage range.

"We expect Unallocated Expenses to be in the high-$30 million range for the fourth quarter of 2023. We forecast our 2023 cash tax payments to be in the range of $65 million to $70 million, and continue to expect our organic capital expenditures to total between $90 million and $110 million. Based on our first half performance, current backlog and prospects for the remainder of the year, we are narrowing our adjusted EBITDA guidance for full-year 2023 by raising the lower bound of the previous range, and now expect to generate between $275 million and $310 million of adjusted EBITDA.

"Our cash balance at quarter-end was relatively unchanged from the prior quarter at $504 million. During the quarter, we received a CARES Act tax refund of $22.7 million during the quarter, which was offset by increased working capital usage. We are increasing our free cash flow generation guidance range to $90 million to $130 million for the full year. This guidance change reflects the inclusion of the CARES Act tax refund, which is partially offset by a higher amount of working capital required as a result of our improved outlook for the fourth quarter of 2023. We expect meaningful free cash generation during the second half of 2023 which is consistent with the last several years." Oceaneering is a global technology company delivering engineered services and products and robotic solutions to the offshore energy, defense, aerospace, manufacturing, and entertainment industries.

For more information on Oceaneering, please visit www.oceaneering.com.

Contact:

Mark Peterson

Vice President, Corporate Development and Investor Relations

Oceaneering International, Inc.

713-329-4507

investorrelations@oceaneering.com

- Tables follow on next page -

In addition to financial results determined in accordance with U.S. generally accepted accounting principles ("GAAP"), this Press Release also includes non-GAAP financial measures (as defined under certain rules and regulations promulgated by the Securities and Exchange Commission). We have included Adjusted Net Income (Loss) and Diluted Earnings (Loss) per Share, each of which excludes the effects of certain specified items, as set forth in the tables that follow. As a result, these amounts are non-GAAP financial measures. We believe these are useful measures for investors to review because they provide consistent measures of the underlying results of our ongoing business. Furthermore, our management uses these measures as measures of the performance of our operations. We have also included disclosures of Earnings Before Interest, Taxes, Depreciation and Amortization (EBITDA), EBITDA Margins, 2023 Adjusted EBITDA Estimates, and Free Cash Flow, as well as the following by segment: EBITDA, EBITDA Margins, Adjusted EBITDA and Adjusted EBITDA Margins. We define EBITDA Margin as EBITDA divided by revenue. Adjusted EBITDA and Adjusted EBITDA Margins and related information by segment exclude the effects of certain specified items, as set forth in the tables that follow. EBITDA and EBITDA Margins, Adjusted EBITDA and Adjusted EBITDA Margins, and related information by segment are each non-GAAP financial measures. We define Free Cash Flow as cash flow provided by operating activities less organic capital expenditures (i.e., purchases of property and equipment other than those in business acquisitions). We have included these disclosures in this press release because EBITDA, EBITDA Margins and Free Cash Flow are widely used by investors for valuation purposes and for comparing our financial performance with the performance of other companies in our industry, and the adjusted amounts thereof provide more consistent measures than the unadjusted amounts. Furthermore, our management uses these measures for purposes of evaluating our financial performance. Our presentation of EBITDA, EBITDA Margins and Free Cash Flow (and the Adjusted amounts thereof) may not be comparable to similarly titled measures other companies report. Non-GAAP financial measures should be viewed in addition to and not as substitutes for our reported operating results, cash flows or any other measure prepared and reported in accordance with GAAP. The tables that follow provide reconciliations of the non-GAAP measures used in this press release to the most directly comparable GAAP measures.

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