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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): October 19, 2026

TTM TECHNOLOGIES, INC.

(Exact name of Registrant as specified in its charter)

\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Delaware

000-31285

91-1033443

(State of

Incorporation)

(Commission

File Number)

(I.R.S. Employer

Identification No.)

\n\n\n\n\n\n\n\n\n\n\n\n\n\n

\n	\n
200 East Sandpointe, Suite 400
Santa Ana, California		92707
(Address of principal executive offices)		(Zip Code)

(714) 327-3000

Registrant’s telephone number, including area code

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

\n\n\n

☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

\n\n\n

☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

\n\n\n

☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

\n\n\n

☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

\n\n\n\n\n\n\n\n\n\n\n\n\n\n

\n	\n	\n	\n
Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Common Stock, $0.001 par value		TTMI		Nasdaq Global Select Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 8.01 – Other Events.

On October 19, 2026, TTM Technologies, Inc. (the “Company”) announced that it had entered into a definitive agreement to acquire (the “Proposed Acquisition”) the Ophir^® Optics business (“Ophir Optics”) from MKS Inc. for approximately $650 million in an all-cash transaction, subject to customary closing adjustments (the “Press Release”). The Proposed Acquisition does not include the Ophir Instruments laser characterization business of MKS Inc., which operates separately from Ophir Optics, or the sale of the Ophir brand.

The Proposed Acquisition is expected to close in the second quarter of 2027 and is subject to customary closing conditions, including certain regulatory approvals. A copy of the Press Release announcing the Proposed Acquisition is attached to this Current Report on Form 8-K (this “Report”) as Exhibit 99.1 and is incorporated herein by reference.

Cautionary Note Regarding Forward-Looking Statements

本报告，包括附录99.1，包含与拟议收购相关的未来事件的前瞻性声明，包括获得必要的监管批准。公司提醒您，此类声明仅为预测，实际事件或结果可能大相径庭。这些声明反映了公司的当前预期，公司不承诺更新或修订这些前瞻性声明，即使经验或未来变化表明本报告或其他公司声明中所表达或暗示的任何预测结果将无法实现。这些声明还涉及许多超出公司控制范围的风险和不确定性，这可能导致实际结果与前瞻性声明有重大差异。有关可能导致公司实际事件或结果与任何前瞻性声明不同的其他因素的描述，请参阅公司向证券交易委员会提交的公开报告中“风险因素”和“管理层讨论与分析财务状况和经营成果”部分的信息。

\n\n\n

第9.01项。

财务报表和附录

(d) 附录

以下附录随本报告一并提交：

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

\n\n	\n
附录编号		描述
\n
99.1		2026年10月19日的新闻稿
\n
104		封面页面交互式数据文件（嵌入在内联XBRL文档中）

签名

根据1934年证券交易法的要求，注册人已 duly 促使本报告由在此 duly 授权的签署人代表其签署。

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

\n\n	\n	\n\n	\n	\n\n	\n
				TTM TECHNOLOGIES, INC.
\n	\n	\n
日期：2026年10月19日		\n		\n		/s/ Daniel J. Weber
\n		\n		\n		由：Daniel J. Weber
						执行副总裁，首席法律顾问 & 秘书

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