Ultra Clean Holdings, Inc.

5. BORROWING ARRANGEMENTS

On September 15, 2025, the Company entered into the Eighth Amendment (the “Eighth Amendment”) to the Credit Agreement, originally dated August 27, 2018 (as previously amended, the “Existing Credit Agreement”). The Existing Credit Agreement, as further amended by the Eighth Amendment, is referred to herein as the “Credit Agreement”. Pursuant to the Eighth Amendment, the Existing Credit Agreement was amended to reduce the interest rate applicable to the term loan facility under the Credit Agreement by 0.50% per annum. The amendment did not modify the revolving credit facility.

The term loan facility has a maturity date of February 25, 2028. The Company pays monthly interest payments in arrears and quarterly principal payments of 0.625% of the outstanding principal balance since September 15, 2025, with the remaining principal paid upon maturity.

The revolving credit facility has aggregate commitments of $150.0 million and a maturity date of August 27, 2027. The Company pays a quarterly commitment fee in arrears equal to 0.25% of the average daily available commitment outstanding. Outstanding letters of credit reduce the availability of the revolving credit facility and, as of September 26, 2025, the Company had $146.6 million, net of $3.4 million of outstanding letters of credit, available under this revolving credit facility.

The letter of credit facility has an available commitment of $50.0 million and a maturity date of August 27, 2027. The Company pays a quarterly fee in arrears on the dollar equivalent of all outstanding letters of credit equal to the applicable margin for the revolving credit facility, and a fronting fee equal to 0.125% of the undrawn and unexpired amount of each letter of credit. As of September 26, 2025, the Company had $3.4 million of outstanding letters of credit and $46.6 million of available commitments remaining under the letter of credit facility.

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Under the Credit Agreement, the Company may elect that the Term Loan bear interest at a rate per annum equal to either (a) “ABR” (as defined in the Credit Agreement), plus the applicable margin or (b) the “Term SOFR” (as defined in the Credit Agreement), plus the applicable margin. The applicable margin for the Term Loan is equal to a rate per annum equal to either (i) at any time that the Company’s corporate family rating is Ba3 (with a stable outlook) or higher from Moody’s and BB- (with a stable outlook) or higher from S&P, (x)2.50% for such Term SOFR loans and (y)1.50% for such ABR term loans or (ii) at all other times, (x)2.75% for such Term SOFR loans and (y)1.75% for such ABR term loans. Interest on the Term Loan is payable on (1) in the case of such ABR term loans, the last day of each calendar quarter and (2) in the case of such Term SOFR loans, the last day of each relevant interest period and, in the case of any interest period longer than three months, on each successive date three months after the first day of such interest period.

At September 26, 2025, the Company had an outstanding amount under the Term Loan of $481.5 million, gross of unamortized debt issuance costs of $5.1 million. As of September 26, 2025, the interest rate on the outstanding Term Loan was 6.9%.

The Credit Agreement requires the Company to maintain certain financial covenants including a minimum consolidated fixed charge coverage ratio and a maximum consolidated leverage ratio as of the last day of any fiscal quarter. The Company currently has no revolving loans outstanding under the Credit Agreement. As of September 26, 2025, the Company was in compliance with the financial covenants contained within the Credit Agreement.

The Company maintains credit agreements with a local bank in Czechia and with a financial institution in Israel, which provide for revolving credit facilities of up to 7.0 million euros (approximately $8.2 million) and $5.0 million, respectively.

As of September 26, 2025, the Company’s total bank debt was $476.4 million, net of unamortized debt issuance costs of $5.1 million. As of September 26, 2025, the Company had $146.6 million, $5.0 million, and 5.5 million euros (approximately $6.4 million) available to draw from its credit facilities in the U.S., Israel and Czechia, respectively.

The fair value of the Company’s long-term debt is based on Level 2 inputs, and was determined using quoted prices for similar instruments in inactive markets. The Company’s carrying value approximates fair value for the Company’s long-term debt.