Every material Form 8-K MKS Instruments has filed with the SEC since November 05, 2024, read and summarized by AI: what happened, the key figures, whether it reads positive or negative for shareholders, and how big a deal it is (impact 1-5). Newest first; each brief links to its own page and to the filing on SEC.gov.
MKS Inc. reported third quarter 2026 revenue of $1,413 million, up from $988 million a year earlier, and GAAP diluted earnings per share of $3.26, up from $1.10. The Board also approved a new share repurchase program of up to $500 million, replacing a 2011 program with about $28 million remaining, and guided fourth quarter 2026 revenue to $1,490 million plus or minus $40 million. For shareholders, the results and guidance point to higher earnings, and the buyback and $0.25 quarterly dividend return capital to them.
Q3 2026 revenue of $1,413 million vs. $988 million in Q3 2025 and $1,248 million in Q2 2026.
GAAP net income of $236 million and diluted EPS of $3.26 vs. $1.10 in Q3 2025; Non-GAAP diluted EPS of $4.18.
Q4 2026 guidance: revenue of $1,490 million plus or minus $40 million and GAAP diluted EPS of $4.04 plus or minus $0.38; guidance excludes the pending Ophir Optics sale.
Share repurchase program of up to $500 million effective November 2, 2026; quarterly dividend of $0.25 per share payable December 7, 2026.
MKS Inc. has agreed to sell its Ophir Optics business to TTM Technologies for $650 million in cash, subject to customary closing adjustments. The company says the proceeds will help strengthen its balance sheet, and the deal is expected to close in the second quarter of 2027, subject to regulatory approvals and governmental consents.
Purchase price is $650 million in cash, subject to customary closing adjustments
The price is an estimated multiple of over 18x projected FY 2026 Adjusted EBITDA for Ophir Optics
Excludes the Ophir Instruments laser characterization business and the Ophir brand
Expected to close in the second quarter of 2027; J.P. Morgan is exclusive financial advisor
MKS Inc. reported second quarter 2026 revenue of $1,248 million and GAAP net income of $175 million, or $2.41 per diluted share, with revenue and key profit measures at or above the high end of its guided ranges. The company guided third quarter 2026 revenue to $1,350 million, plus or minus $40 million, and said it made a $100 million voluntary prepayment on its USD term loan B in August 2026.
Q2 2026 total net revenues of $1,248 million, compared with $973 million in Q2 2025 and $1,078 million in Q1 2026
GAAP net income per diluted share of $2.41 for Q2 2026, compared with $0.92 in Q2 2025
Q3 2026 guidance: revenue of $1,350 million plus or minus $40 million; GAAP net income per diluted share of $2.73 plus or minus $0.31
Convertible senior notes became convertible at noteholders' option during Q3 2026 and were classified as short-term debt of $1,399 million at June 30, 2026
At its May 11, 2026 annual meeting, MKS Inc. shareholders approved an amended and restated 2022 Stock Incentive Plan that adds 6,200,000 shares to the authorized pool, re-elected three directors, and ratified PricewaterhouseCoopers LLP as auditor for 2026. A shareholder proposal to lower the threshold for calling a special meeting from 40% to 10% did not pass, while the company's own advisory proposal to lower it to 25% received more votes for than against.
Shareholders approved the amended plan, which adds 6,200,000 shares; the filing says the plan's other terms are unchanged.
Peter J. Cannone III, Wissam G. Jabre and Joseph B. Donahue were elected to one-year terms, with 57,214,027, 57,214,803 and 54,218,941 votes for, respectively.
The shareholder proposal to cut the special meeting threshold to 10% drew 18,775,304 votes for and 38,812,405 against.
PricewaterhouseCoopers LLP was ratified as independent auditor for the year ending December 31, 2026, with 58,207,171 votes for and 2,248,167 against.
MKS Inc. reported first quarter 2026 revenue of $1,078 million, up from $936 million a year earlier, with GAAP net income of $84 million ($1.18 per diluted share) versus $52 million ($0.77) a year earlier. The company guided second quarter revenue to $1,200 million plus or minus $40 million and Non-GAAP net earnings per diluted share to $2.90 plus or minus $0.30, which together point to continued growth in the headline measures.
Q1 2026 revenue was $1,078 million, up from $936 million in Q1 2025 and $1,033 million in Q4 2025.
Q1 2026 Non-GAAP net earnings per diluted share were $2.30, compared with $1.71 in Q1 2025.
Free cash flow was $29 million in Q1 2026, down from $123 million in Q1 2025.
Q2 2026 guidance: revenue of $1,200 million, plus or minus $40 million, and Adjusted EBITDA of $328 million, plus or minus $26 million.
MKS Inc. disclosed that Executive Vice President, General Counsel and Secretary Kathleen F. Burke notified the company on March 31, 2026 of her intent to retire. She will leave the General Counsel and Secretary roles effective June 1, 2026, and will remain as a special advisor until July 1, 2026, so the filing describes a planned leadership transition rather than an immediate departure.
Kathleen F. Burke notified MKS Inc. of her retirement on March 31, 2026.
Retirement as Executive Vice President, General Counsel and Secretary is effective June 1, 2026.
Burke will continue as special advisor to the company until July 1, 2026.
The filing was signed by President and CEO John T.C. Lee on April 6, 2026.
MKS Inc. reported fourth-quarter 2025 revenue of $1,033 million, up from $935 million a year earlier, with GAAP net income of $108 million and diluted EPS of $1.58. Its first-quarter 2026 guidance calls for revenue of $1,040 million plus or minus $40 million and non-GAAP EPS of $2.00 plus or minus $0.28, and the company completed a refinancing of its term loans and a €1.0 billion senior notes offering on February 4, 2026.
Q4 2025 revenue was $1,033 million, versus $935 million in Q4 2024; GAAP net income was $108 million, versus $90 million.
Q4 2025 non-GAAP net earnings per diluted share were $2.47, versus $2.15 in Q4 2024; full-year 2025 was $7.88.
Q1 2026 guidance: revenue of $1,040 million (plus or minus $40 million) and non-GAAP EPS of $2.00 (plus or minus $0.28).
On February 4, 2026, the company issued €1.0 billion of 4.25% senior notes due 2034 and refinanced its term loans, prepaying about $1.3 billion.
MKS Inc. closed a private offering of €1.0 billion of 4.250% senior notes due 2034 on February 4, 2026, and used the proceeds with cash on hand to prepay about $1.3 billion of its U.S. dollar term loan. The same day it refinanced its term loans and revolving credit facility at lower interest margins, and the company expects about $27 million in annualized cash interest savings. For shareholders, the filing points to lower borrowing costs and longer debt maturities, while the company also takes on €1.0 billion of new senior unsecured debt.
€1.0 billion of 4.250% senior notes due February 15, 2034 were sold in a private offering completed February 4, 2026.
Proceeds plus cash on hand prepaid about $1.3 billion of the $2.2 billion USD tranche B term loan.
The USD tranche B term loan margin fell from 2.00% to 1.75% (SOFR), and the revolver now matures in 2031.
The company expects annualized cash interest savings of approximately $27 million from the combined actions.
MKS said on January 21, 2026 that it now expects fourth-quarter 2025 revenue of about $1,030 million, a $40 million increase at the midpoint of prior guidance, citing increased demand across all markets and divisions. The company also outlined a proposed refinancing of its term loans and revolving credit facility, to be discussed with lenders on January 22, 2026, which it says is expected to be leverage neutral and reduce interest expense; the company states there is no assurance the transactions will close.
Q4 2025 revenue expected at about $1,030 million, plus or minus $5 million, up $40 million at the guidance midpoint
GAAP net income expected at $106 million, plus or minus $3 million; Adjusted EBITDA expected at $248 million, plus or minus $2 million
Gross margin and per-share earnings expected to exceed the midpoint of prior guidance; GAAP operating expenses expected slightly above the prior range
Proposed refinancing would replace a $2.2 billion term loan with a new term loan of about $0.9 billion due 2033 and upsize the $675 million revolver to $1 billion
MKS Inc. reported third-quarter 2025 revenue of $988 million, up from $896 million a year earlier, with GAAP net income of $74 million, or $1.10 per diluted share, compared with $62 million, or $0.92, in the third quarter of 2024. The company guided fourth-quarter 2025 revenue to $990 million, plus or minus $40 million, and said it made a $100 million voluntary debt prepayment in October.
Q3 2025 total net revenues of $988 million, versus $896 million in Q3 2024 and $973 million in Q2 2025
GAAP net income of $74 million and $1.10 per diluted share; non-GAAP net earnings per diluted share of $1.93
Fourth-quarter 2025 guidance: revenue of $990 million plus or minus $40 million; non-GAAP EPS of $2.27 plus or minus $0.34
Net leverage ratio of 3.9x at September 30, 2025; additional $100 million voluntary prepayment in October 2025
MKS Inc. reported second-quarter 2025 revenue of $973 million, up from $887 million a year earlier, and GAAP net income of $62 million, or $0.92 per diluted share, compared with $23 million, or $0.33, in the second quarter of 2024. The company also guided third-quarter 2025 revenue to $960 million, plus or minus $40 million, and said it made $200 million in term loan prepayments across June and August 2025.
Q2 2025 revenue of $973 million, above the high end of company guidance and up from $887 million in Q2 2024.
GAAP net income of $62 million, or $0.92 per diluted share, versus $23 million, or $0.33 per diluted share, in Q2 2024.
Q3 2025 guidance: revenue of $960 million plus or minus $40 million; Non-GAAP net earnings per diluted share of $1.80 plus or minus $0.29.
Voluntary term loan prepayments of $100 million in June 2025 and another $100 million in August 2025.
Shareholders approved changing the company's name to MKS Inc. at the May 12, 2025 annual meeting, effective May 16, 2025, and the stock will keep the MKSI symbol on Nasdaq. The filing also reports a shareholder-approved move from supermajority to simple majority voting for certain charter matters and by-law amendments, and the appointment of James A. Schreiner as Executive Vice President and Chief Operating Officer effective August 1, 2025.
Shareholders approved the name change to MKS Inc. on May 12, 2025; it takes effect May 16, 2025, and the ticker remains MKSI.
Shareholders approved lowering the voting requirement for certain charter matters and by-law amendments from supermajority to simple majority.
James A. Schreiner, 63, will become Executive Vice President and Chief Operating Officer on August 1, 2025, with base salary rising from $510,000 to $600,000.
The company states the name change has no effect on its corporate structure or the names of its subsidiaries.
MKS Instruments reported first quarter 2025 revenue of $936 million, at the high end of its guidance and up from $868 million a year earlier, with GAAP net income of $52 million ($0.77 per diluted share) versus $15 million ($0.22) in the first quarter of 2024. For the second quarter, the company guided to revenue of $925 million, plus or minus $40 million, and Non-GAAP net earnings per diluted share of $1.56, plus or minus $0.28, both below first-quarter actual results.
Q1 2025 total net revenues of $936 million, versus $935 million in Q4 2024 and $868 million in Q1 2024
Q1 2025 GAAP net income of $52 million and diluted EPS of $0.77; Non-GAAP net earnings of $116 million and $1.71 per diluted share
Q2 2025 guidance: revenue of $925 million plus or minus $40 million; GAAP net income per diluted share of $0.81 plus or minus $0.32
Free cash flow of $123 million in Q1 2025; company repurchased about 546,000 shares for about $45 million and paid a $15 million dividend
MKS Instruments reported fourth-quarter 2024 revenue of $935 million, up from $893 million a year earlier, and GAAP net income of $90 million, or $1.33 per diluted share, compared with a net loss of $68 million in the prior-year quarter. The company guided first-quarter 2025 revenue to $910 million, plus or minus $40 million, and non-GAAP diluted EPS to $1.40, plus or minus $0.27, which is below the fourth-quarter revenue level.
Q4 2024 revenue of $935 million vs. $893 million in Q4 2023; non-GAAP diluted EPS of $2.15 vs. $1.17
Q4 2024 GAAP net income of $90 million, or $1.33 per diluted share, vs. a net loss of $68 million in Q4 2023
Q1 2025 guidance: revenue of $910 million (plus or minus $40 million) and GAAP diluted EPS of $0.63 (plus or minus $0.28)
Company made a voluntary $100 million principal prepayment on its USD term loan B in January 2025
MKS Instruments refinanced its USD and euro tranche B term loans under a Fifth Amendment to its credit agreement, lowering the interest margins on both. The company also made a $100 million voluntary prepayment on the USD loans, and it estimates annualized cash interest savings of about $15 million at current rates.
USD tranche B margin fell from 2.25% to 2.00% over SOFR; euro tranche B margin fell from 2.75% to 2.50%.
A $100 million voluntary prepayment cut USD tranche B principal from $2.6 billion to $2.5 billion.
Annualized cash interest savings from the combined actions are estimated at about $15 million, based on current interest rates.
The new term loans mature in 2029, and the 1.00% prepayment premium period on repricing transactions runs six months past January 24, 2025.
MKS Instruments reported third quarter 2024 results, with revenue of $896 million, down from $932 million a year earlier but up from $887 million in the prior quarter. Profit measures improved year over year, with GAAP net income of $62 million and non-GAAP EPS of $1.72, versus $1.46 a year earlier. The company also gave fourth quarter 2024 guidance of $910 million in revenue, plus or minus $40 million, and non-GAAP EPS of $1.95, plus or minus $0.32.
Q3 2024 revenue was $896 million, versus $932 million in Q3 2023 and $887 million in Q2 2024.
GAAP net income was $62 million, or $0.92 per diluted share, versus $39 million, or $0.58, a year earlier.
Non-GAAP EPS was $1.72 and Adjusted EBITDA was $232 million, compared with $241 million in Q3 2023.
Q4 2024 outlook: revenue of $910 million (plus or minus $40 million) and non-GAAP EPS of $1.95 (plus or minus $0.32).
MKS Instruments appointed Wissam Jabre, executive vice president and chief financial officer of Western Digital, as a Class III director effective November 4, 2024, increasing the board from eight to nine directors. He will serve on the Audit Committee, and the filing describes his board and committee pay under the company's standard non-employee director arrangements.
Jabre appointed effective November 4, 2024, to serve until the 2026 Annual Meeting of Shareholders
Board size increased by one to nine directors; Jabre will serve on the Audit Committee
Automatic RSU grant with a grant date value of $200,000 received November 4, 2024
Annual retainers of $85,000 for non-employee directors and $12,500 for Audit Committee members, prorated for 2024
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