Welcome to our dedicated page for MKS SEC filings (Ticker: MKSI), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
MKS Inc. SEC filings document operating results, capital-structure activity and governance matters for a Nasdaq-listed provider of technology solutions for semiconductor manufacturing, electronics and packaging, and specialty industrial applications. Form 8-K reports disclose results of operations and financial condition, financial guidance updates, material definitive agreements, debt refinancing activity, senior notes, credit facilities and registered common stock information.
The company’s proxy materials cover board and shareholder voting matters, executive compensation and related governance disclosures. Other current reports address officer transitions and compensation arrangements, providing formal records of management, governance and financing developments tied to MKS’s public-company structure.
MKS INC (MKSI) received a notice under Rule 144 that director Elizabeth A. Mora, through Fidelity Brokerage Services LLC, plans to sell 300 shares of common stock on NASDAQ. The shares relate to restricted stock vesting designated as compensation, and Mora has sold 300 shares in the prior three months.
MKS INC (symbol: MKSI) is the issuer of record for a Form 4 filing submitted to the SEC.
MKS INC executive John Tseng-Chung Lee, President & CEO, reported selling 10,000 shares of Common Stock on 2026-08-14 at $302.01 per share in an open-market or private transaction. Following the sale, he directly holds 134,776.2667 shares. The sale was executed under a Rule 10b5-1 trading plan adopted on February 20, 2026.
MKSI reporting person John Tseng-Chung Lee filed to sell 10,000 shares of common stock through Fidelity Brokerage Services on NASDAQ, with an approximate aggregate market value of $3,020,100.00, expected on or about 08/14/2026. The notice also lists a prior sale of 10,000 shares on 05/22/2026 for about $3,154,800.00, and notes the shares originated from restricted stock vesting events in 2021 and 2022 classified as compensation.
MKS Inc. reported significantly stronger results for the quarter ended June 30, 2026. Total net revenues were $1,248 million, up from $973 million a year earlier, producing net income of $175 million versus $62 million and diluted EPS of $2.41 versus $0.92. For the first six months, revenue reached $2,326 million and net income $258 million, up from $1,910 million and $114 million, respectively.
Revenue increased in all three end markets in Q2 2026: Semiconductor $554 million, Electronics and Packaging $381 million, and Specialty Industrial $313 million. Operating cash flow for the first half was $296 million. At June 30, 2026, total assets were $8,941 million, cash and cash equivalents $611 million, and total debt (Term Loan Facility, Convertible Notes and 2034 Notes) carried at $4,023 million, down from $4,278 million at December 31, 2025. The company issued €1,000 million of 4.250% senior notes due 2034 and used the proceeds, with cash on hand, to prepay $1,274 million of its USD Term Loan B, while its $1,400 million 1.25% Convertible Notes due 2030 became convertible and are classified as short-term debt. The Board continued a quarterly cash dividend of $0.25 per share.
MKS Inc. reported second-quarter 2026 results with revenue of $1,248 million, driven by accelerated double-digit year-over-year growth across its semiconductor, electronics & packaging, and specialty industrial end markets. Gross margin was 47.6% and GAAP operating margin was 20.1%.
GAAP net income was $175 million, or $2.41 per diluted share. Non-GAAP net earnings were $232 million, or $3.30 per diluted share, and management states that revenue and key profitability metrics were at or above the high end of guidance. Adjusted EBITDA was $358 million, a margin of 28.6%, and free cash flow was $188 million.
As of June 30, 2026, MKS held $611 million in cash and cash equivalents, with $1.5 billion of secured term loans, $1.4 billion of convertible senior notes, and €1.0 billion of senior notes outstanding, plus up to $1.0 billion of additional revolver capacity. In August 2026 the company voluntarily prepaid $100 million on its USD term loan B. Third-quarter 2026 guidance includes revenue of $1,350 million ± $40 million, GAAP diluted EPS of $2.73 ± $0.31, Non-GAAP diluted EPS of $3.58 ± $0.31, and Adjusted EBITDA of $395 million ± $28 million.
MKS Inc executive John Edward Williams, EVP & GM, PSD, reported selling 457 shares of Common Stock on August 3, 2026 at $288.31 per share in a sale described as an open market or private transaction. Following this trade, he directly held 4,097.844 shares. The sale was effected pursuant to a Rule 10b5-1 trading plan adopted on March 5, 2026.
Victory Capital Management, Inc. filed Amendment No. 2 to a Schedule 13G reporting its beneficial ownership in MKS Inc common stock. Victory reports beneficial ownership of 604,690 shares, representing 0.90% of the class. It has sole voting power over 591,567 shares and sole dispositive power over 604,690 shares, with no shared voting or dispositive power. The filing indicates that Victory now reports ownership of 5 percent or less of the class and certifies that the securities are not held for the purpose of changing or influencing control of MKS Inc.
JPMorgan Chase & Co. reports beneficial ownership of 3,417,585 shares of MKS Inc common stock, representing 5.0% of the class.
It has sole power to vote 3,229,004 shares and shared voting power over 4,191 shares, plus sole dispositive power over 3,416,018 shares and shared dispositive power over 1,243 shares. The position is held through multiple JPMorgan subsidiaries.