Exhibit 99.1

Shimmick Corporation Announces Fourth Quarter and Fiscal Year 2024 Results

Irvine, CA, March 13, 2025 – Shimmick Corp. (NASDAQ: SHIM), a leading water infrastructure company, today announced financial results for the fourth quarter and fiscal year ended January 3, 2025.

Highlights

“Since I joined Shimmick in December 2024, I have been constantly impressed with the technical expertise, capabilities and commitment of our staff and our strong market relationships and reputation”, said Ural Yal, Chief Executive Officer of Shimmick.

“Shimmick has a great opportunity for sustained growth in the near and mid-term with market conditions closely matching our core skillset. Following the resolution of legacy issues in 2024, we are going into 2025 with strong liquidity and a lower-risk portfolio. Most importantly, we have a comprehensive strategy to take advantage of an expanded pipeline of opportunities, improve our backlog and project performance and invest in our people and we have already made substantial progress in the last three months. I am looking forward to a strong 2025 for our company.”

Financial Results

A summary of our results is included in the table below:

The following table presents revenue and gross margin data for the three months and fiscal year ended January 3, 2025 compared to the three months and fiscal year ended December 29, 2023:

(1) Shimmick Projects are those projects started after prior ownership that have focused on water infrastructure and other critical infrastructure.

(2) Legacy Projects are those projects started under prior ownership.

(3) Projects that focus on foundation drilling are referred to as "Foundations Projects". The Company entered into an agreement to sell the assets of non-core foundation projects in the second quarter of 2024 and continued to wind down work during the 2024 fiscal year. As a result, revenue recognized on Foundations Projects declined during the remainder of the 2024 fiscal year Shimmick Projects have focused on water infrastructure and other critical infrastructure.

Shimmick Projects

Revenue recognized on Shimmick Projects was $80 million and $85 million for the three months ended January 3, 2025 and December 29, 2023, respectively. The $5 million decrease in revenue was primarily the result of a $17 million decrease from lower activity on existing jobs related to weather and client-driven delays partially offset by $12 million of revenue from a new water infrastructure job.

Gross margin recognized on Shimmick Projects was $2 million and $9 million for the three months ended January 3, 2025 and December 29, 2023, respectively. The decrease in gross margin was primarily the result of a $15 million increase in cost of revenue, schedule extensions and a decrease in revenue from existing projects that are winding down, partially offset by an aggregate of $8 million of gross margin from a new water infrastructure project and ramp up of a transportation project.

Legacy Projects

As part of the AECOM Sale Transactions, we acquired the Legacy Projects and backlog. Legacy Projects revenue was $18 million for the three months ended January 3, 2025, a decline of $28 million as compared to the three months ended December 29, 2023. The decline in revenue was primarily driven by continued impacts of Legacy Projects winding down during fiscal 2024.

Gross margin was $(12) million for the three months ended January 3, 2025 as compared to $(8) million for the three months ended December 29, 2023, primarily as a result of projects winding down and additional cost overruns on Legacy Loss Projects (as defined below) that have experienced additional increases in the cost to complete as well as additional legal fees to pursue contract modifications and recoveries.

A subset of Legacy Projects ("Legacy Loss Projects") have experienced significant cost overruns due to the COVID pandemic, design issues, legal costs and other factors. In the Legacy Loss Projects, we have recognized the estimated costs to complete and the loss expected from these projects. If the estimates of costs to complete fixed-price contracts indicate a further loss, the entire amount of the additional loss expected over the life of the project is recognized as a period cost in the cost of revenue. As these Legacy Loss Projects continue to wind down to completion, no further gross margin will be recognized and in some cases, there may be additional costs associated with these projects. Revenue recognized on these Legacy Loss Projects was $11 million and $27 million for the three months ended January 3, 2025 and December 29, 2023, respectively. Gross margin recognized on these Legacy Loss Projects was $(11) million and $1 million for the three months ended January 3, 2025 and December 29, 2023, respectively. The change in gross margin was primarily the result of additional increases in the cost to complete as well as additional legal fees to pursue contract modifications and recoveries.

Foundations Projects

The Company entered into an agreement to sell the assets of our non-core Foundations Projects in the second quarter of 2024 and continued to wind down work during the 2024 fiscal year. As a result, revenue recognized on Foundations Projects declined during the 2024 fiscal year. Revenue recognized on Foundations Projects was $5 million and $7 million for the three months ended January 3, 2025 and December 29, 2023, respectively. The decline in revenue was the result of timing of jobs winding down following the asset sale.

Gross margin recognized on Foundations Projects was $(10) million and $(2) million for the three months ended January 3, 2025 and December 29, 2023, respectively. The decline in gross margin was the result of increases in cost to complete.

Selling, general and administrative expenses

Selling, general and administrative expenses were consistent with prior year quarter.

Equity in loss of unconsolidated joint ventures

Equity in loss of unconsolidated joint ventures was $(4) million, compared to earnings of $1 million in the prior year quarter. The decrease was primarily driven by increased costs during the three months ended January 3, 2025 due to schedule extensions experienced on two projects which are scheduled to be completed during the second quarter of fiscal 2025.

Gain on sale of assets

Gain on sale of assets were consistent with the prior year quarter.

Interest expense

Interest expense remained flat compared to the prior year quarter.

Income tax benefit

Income tax benefit of $1 million was recognized for the three months ended January 3, 2025, primarily as the result of a decrease in income taxes payable. No taxable income was recognized for the three months ended December 29, 2023, thus no income tax expense was recorded.

Net loss

Net loss increased by $21 million to a net loss of $38 million for the three months ended January 3, 2025, primarily due to a decrease in gross margin of $20 million stemming primarily from gross margin declines in the Foundations Projects and Legacy Loss Projects. A decrease in equity in earnings of unconsolidated joint ventures of $5 million also contributed to the change, partially offset by an increase in other income, net of $3 million and increase in income tax benefit of $1 million, all as described above.

Diluted loss per common share was $(1.13) for the three months ended January 3, 2025, compared to diluted loss per common share of $(0.74) for the same period in 2023.

Adjusted net loss was $31 million for the three months ended January 3, 2025, compared to an adjusted net loss of $14 million for the same period in 2023 due to the higher net loss in the quarter.

Adjusted diluted loss per common share was $(0.91) for the three months ended January 3, 2025, compared to $(0.59) for the same period in 2023.

Adjusted EBITDA was $(27) million for the three months ended January 3, 2025, compared to $(9) million for the same period in 2023.

Fiscal Year 2025 Guidance

For the full 2025 fiscal year, we expect:

Conference Call and Webcast Information

Shimmick will host an investor conference call Thursday, March 13, 2025 at 5:00 pm EST. Interested parties are invited to listen to the conference call which can be accessed live over the phone by dialing (877) 869-3847, or for international callers, (201) 689-8261. A replay will be available two hours after the call and can be accessed by dialing (877) 660-6853, or for international callers, (201) 612-7415. The passcode for the live call and the replay is 13750884. The replay will be available until 11:59 p.m. (ET) April 3, 2025. Interested investors and other parties may also listen to a simultaneous webcast of the conference call by visiting the Investors section of the Company’s website at www.shimmick.com. The online replay will be available for a limited time beginning immediately following the call.

About Shimmick Corporation

Shimmick Corporation ("Shimmick", the "Company") (NASDAQ: SHIM) is an industry leader in delivering turnkey infrastructure solutions that strengthen critical markets across water, energy, climate resiliency, and sustainable transportation. We integrate technical excellence with collaborative project delivery methods to provide innovative, technology-driven infrastructure solutions that accelerate economic growth and empower communities nationwide. With a track record that spans over a century, Shimmick, headquartered in California, unites deep engineering heritage with entrepreneurial spirit to tackle today's most complex infrastructure challenges. For more information, visit www.shimmick.com.

Forward-Looking Statements

This release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). These forward-looking statements are often characterized by the use of words such as “may,”

“should,” “expects,” “plans,” “anticipates,” “could,” “intends,” “targets,” “projects,” “contemplates,” “believes,” “estimates,” “predicts,” “potential” or “continue” or the negative of these terms or other similar words. Forward-looking statements are only predictions based on our current expectations and our projections about future events, and we undertake no obligation to update any forward-looking statement to reflect events or circumstances, including, but not limited to, unanticipated events, after the date on which such statement is made, unless otherwise required by law. Forward-looking statements contained in this release include, but are not limited to, statements about: expected future financial performance (including the assumptions related thereto), including our revenue, net loss, backlog and Adjusted EBITDA; our growth prospects; our expectations regarding profitability; our strategic transformation towards becoming more capital-efficient business; our market relationships and reputation; our core capabilities and skillset; the risk profile of our project portfolio; and our capital plans and expectations related thereto. These statements involve risks and uncertainties, and actual results may differ materially from any future results expressed or implied by the forward-looking statements. Forward-looking statements are only predictions based on our current expectations and our projections about future events, and we undertake no obligation to update any forward-looking statement to reflect events or circumstances, including, but not limited to, unanticipated events, after the date on which such statement is made, unless otherwise required by law.

We wish to caution readers that, although we believe any forward-looking statements are based on reasonable assumptions, certain important factors may have affected and could in the future affect our actual financial results and could cause our actual financial results for subsequent periods to differ materially from those expressed in any forward-looking statement made by or on our behalf, including, but not limited to, the following: our ability to accurately estimate risks, requirements or costs when we bid on or negotiate a contract; the impact of our fixed-price contracts; qualifying as an eligible bidder for contracts; the availability of qualified personnel, joint venture partners and subcontractors; inability to attract and retain qualified managers and skilled employees and the impact of loss of key management; higher costs to lease, acquire and maintain equipment necessary for our operations or a decline in the market value of owned equipment; subcontractors failing to satisfy their obligations to us or other parties or any inability to maintain subcontractor relationships; marketplace competition; our limited operating history as an independent company following our separation from AECOM; our inability to obtain bonding; our relationship and transactions with our prior owner, AECOM; AECOM defaulting on its contractual obligations to us or under agreements in which we are beneficiary; our limited number of customers; dependence on subcontractors and suppliers of materials; any inability to secure sufficient aggregates; an inability to complete a merger or acquisition or to integrate an acquired company’s business; adjustments in our contract backlog; accounting for our revenue and costs involves significant estimates, as does our use of the input method of revenue recognition based on costs incurred relative to total expected costs; material impairments; any failure to comply with covenants under any current indebtedness, and future indebtedness we may incur; the adequacy of sources of liquidity; cybersecurity attacks against, disruptions, failures or security breaches of, our information technology systems; seasonality of our business; pandemics and public health emergencies; commodity products price fluctuations and inflation (and actions taken by monetary authorities in response to inflation) and/or elevated interest rates; liabilities under environmental laws, compliance with immigration laws, and other regulatory matters, including changes in regulations and laws; climate change; deterioration of the U.S. economy; changes in state and federal laws, regulations or policies under the new Presidential administration, including changes in trade policies and regulations, including the potential for increases or changes in duties, current and potentially new tariffs or quotas, and geopolitical risks, including those related to the war between Russia and Ukraine and the conflict in the Gaza strip and Red Sea Region; and other risks detailed in our filings with the Securities and Exchange Commission, including the “Risk Factors” section in our Annual Report on Form 10-K for the fiscal year ended January 3, 2025 and those described from time to time in our future reports with the SEC.

Non-GAAP Definitions This press release includes unaudited non-GAAP financial measures, adjusted EBITDA and adjusted net loss and adjusted diluted loss per common share. For definitions of these non-GAAP financial measures and reconciliations to the most comparable GAAP measures, see "Explanatory Notes" and tables that follow in this press release. The presentation of non-GAAP financial measures is not intended to be a substitute for, and should not be considered in isolation from, the financial measures reported in accordance with GAAP.

Please refer to the Reconciliation between Net loss Attributable to Shimmick Corporation and Adjusted net loss and Adjusted diluted loss per common share included within Table A and the Reconciliation between Net Loss Attributable to Shimmick Corporation and Adjusted EBITDA included within Table B below.

We do not provide a reconciliation for forward-looking non-GAAP guidance because we are unable to predict certain items contained in the U.S. GAAP measures without unreasonable efforts. These items may include legal fees and other costs for a legacy loss project, acquisition-related costs, litigation charges or settlements, and certain other unusual adjustments.

Investor Relations Contact

1-949-704-2350

IR@shimmick.com

Shimmick Corporation

Consolidated Balance Sheets

(In thousands, except share data)

(unaudited)

Shimmick Corporation

Consolidated Statements of Operations

(In thousands, except per share data)

(unaudited)

Shimmick Corporation

Consolidated Statements of Cash Flows

(In thousands)

(unaudited)

EXPLANATORY NOTES

Non-GAAP Financial Measures

Adjusted Net (Loss) Income and Adjusted Diluted Earnings Per Common Share

Adjusted net (loss) income represents Net loss attributable to Shimmick Corporation adjusted to eliminate stock-based compensation, ERP pre-implementation asset impairment and associated costs, legal fees and other costs for Legacy Projects and other costs. We have also made an adjustment for transformation costs we have incurred including advisory costs in connection with settling outstanding claims, exiting the Legacy Projects and transforming the Company to shift our strategy to meet the nation’s growing need for water and other critical infrastructure and grow our business.

We have included Adjusted net (loss) income in this press release because it is a key measure used by our management and board of directors to understand and evaluate our core operating performance and trends, to prepare and approve our annual budget and to develop short and long-term operational plans. In particular, we believe that the exclusion of the income and expenses eliminated in calculating Adjusted net (loss) income can provide a useful measure for period-to-period comparisons of our core business. Accordingly, we believe that Adjusted net (loss) income provides useful information to investors and others in understanding and evaluating our results of operations.

Our use of Adjusted net (loss) income as an analytical tool has limitations, and you should not consider it in isolation or as a substitute for analysis of our financial results as reported under GAAP. Some of these limitations are:

Because of these and other limitations, you should consider Adjusted net (loss) income alongside Net loss attributable to Shimmick Corporation, which is the most directly comparable GAAP measure.

Table A

Reconciliation between Net loss attributable to

Shimmick Corporation and Adjusted net (loss) income

(unaudited)

(1) Consists of transformation-related costs we have incurred including advisory costs in connection with settling outstanding claims in connection with exiting certain Legacy Projects as part of the Company’s growth strategy to address and capitalize on the nation’s growing need for water and other critical infrastructure.

(2) Reflects a strategic decision to enhance the Company’s current ERP system rather than implementing a new platform which, due to prior investments and remaining contractual obligations, resulted in a charge of approximately $16 million in the third quarter of fiscal 2024.

(3) Consists of legal fees and other costs incurred in connection with claims relating to Legacy Projects.

(4) Consists of transaction-related costs and changes in fair value of contingent consideration remaining after the impact of transactions with our prior owner.

Adjusted EBITDA

Adjusted EBITDA represents our Net loss attributable to Shimmick Corporation before interest expense, income tax benefit and depreciation and amortization, adjusted to eliminate stock-based compensation, ERP pre-implementation asset impairment and associated costs, legal fees and other costs for Legacy Projects and other costs. We have also made an adjustment for transformation costs we have incurred including advisory costs in connection with settling outstanding claims, exiting the Legacy Projects and transforming the Company to shift our strategy to meet the nation’s growing need for water and other critical infrastructure and grow our business.

We have included Adjusted EBITDA in this press release because it is a key measure used by our management and board of directors to understand and evaluate our core operating performance and trends, to prepare and approve our annual budget and to develop short and long-term operational plans. In particular, we believe that the exclusion of the income and expenses eliminated in calculating Adjusted EBITDA can provide a useful measure for period-to-period comparisons of our core business.

Accordingly, we believe that Adjusted EBITDA provides useful information to investors and others in understanding and evaluating our results of operations.

Our use of Adjusted EBITDA as an analytical tool has limitations, and you should not consider it in isolation or as a substitute for analysis of our financial results as reported under GAAP. Some of these limitations are:

Because of these and other limitations, you should consider Adjusted EBITDA alongside Net loss attributable to Shimmick Corporation, which is the most directly comparable GAAP measure.

Table B

Reconciliation between Net loss attributable to

Shimmick Corporation and Adjusted EBITDA

(unaudited)

(1) Consists of transformation-related costs we have incurred including advisory costs in connection with settling outstanding claims in connection with exiting certain Legacy Projects as part of the Company’s growth strategy to address and capitalize on the nation’s growing need for water and other critical infrastructure.

(2) Reflects a strategic decision to enhance the Company’s current ERP system rather than implementing a new platform which, due to prior investments and remaining contractual obligations, resulted in a charge of approximately $16 million in the third quarter of fiscal 2024.

(3) Consists of legal fees and other costs incurred in connection with claims relating to Legacy Projects.

(4) Consists of transaction-related costs and changes in fair value of contingent consideration remaining after the impact of transactions with our prior owner.