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.
Invesco Ltd. has reported beneficial ownership of 4,394,205 shares of MKS Inc common stock, representing 6.5% of the class as of 12/31/2025. These shares are held of record by clients of Invesco’s investment adviser subsidiaries.
Invesco has sole voting power over 4,301,757 shares and sole dispositive power over 4,394,205 shares, with no shared voting or dispositive power. It files as a Bermuda-based parent holding company and states the position is held in the ordinary course, not to change or influence control of MKS Inc.
MKS Inc. executive Eric Robert Taranto received 3,504.314 performance-based restricted stock units (RSUs) on February 8, 2026. Each RSU represents the right to receive one share of MKS common stock. After this award, he beneficially owns 12,742.601 derivative securities in the form of RSUs.
The RSUs were tied to performance criteria that were determined to be achieved on February 8, 2026. They will vest in three equal annual installments starting on February 15, 2026, or the next business day if that date is not a business day.
MKS Inc. executive Henry David Philip received a new performance-based equity award. On February 8, 2026, he was granted 5,521.949 restricted stock units (RSUs) at no cash cost, each representing one share of MKS Inc. common stock.
The achievement of performance criteria for these RSUs was determined on February 8, 2026. The units will vest in three equal annual installments starting on February 15, 2026, with vesting moving to the next business day if February 15 is not a business day. After this grant, Philip beneficially owned 18,808.107 derivative securities in the form of RSUs, held directly.
MKS Inc. executive vice president and chief operating officer James Alan Schreiner reported a grant of performance-based restricted stock units. On February 8, 2026, he was awarded 5,226.759 RSUs, each representing the right to receive one share of MKS Inc. common stock.
These RSUs vest in three equal annual installments beginning on February 15, 2026, with vesting moving to the next business day if that date is not a business day. Following this grant, Schreiner beneficially owns 18,244.899 derivative securities in the form of RSUs held directly.
MKS Inc. executive John Edward Williams, EVP & GM, PSD, received an award of 2,973.357 performance-based restricted stock units (RSUs) on February 8, 2026. Each RSU represents the right to receive one share of MKS common stock.
The performance-based RSUs vest in three equal annual installments beginning on February 15, 2026, with vesting in later years occurring on February 15 or the next business day. After this grant, Williams beneficially owns 10,317.107 derivative securities related to MKS common stock.
MKS Inc. executive Kathleen Flaherty Burke, EVP, GC & Secretary, reported an equity award on a Form 4. On February 8, 2026, she was granted 7,008.628 restricted stock units (RSUs), each representing one share of MKS common stock. These performance-based RSUs vest in three equal annual installments beginning on February 15, 2026, with vesting on the next business day if that date is not a business day. After this grant, she directly holds 24,007.365 derivative securities in the form of RSUs.
MKS Inc. EVP & CFO Mayampurath Ramakumar received 8,877.596 restricted stock units (RSUs) on February 8, 2026, as reported on a Form 4. Each RSU represents the contingent right to receive one share of MKS common stock.
The RSUs were tied to performance criteria that were determined to be achieved on February 8, 2026. They vest in three equal annual installments beginning on February 15, 2026, with vesting moving to the next business day if February 15 is not a business day. Following this award, Ramakumar beneficially owns 25,279.99 derivative securities directly.
MKS Inc. President and CEO Lee John Tseng-Chung reported a grant of 50,971.84 restricted stock units on February 8, 2026. Each RSU represents the right to receive one share of MKS Inc. common stock. After this award, he beneficially owns 139,124.462 derivative securities linked to common stock.
The RSUs were tied to performance criteria that were determined on February 8, 2026. They vest in three equal annual installments beginning on February 15, 2026, with vesting moving to the next business day if February 15 is not a business day in any vesting year.
MKS Inc. completed a private offering of €1.0 billion senior notes due 2034 at a 4.250% interest rate to refinance existing debt. The company used the net proceeds, along with cash on hand, to prepay approximately $1.3 billion of its $2.2 billion senior secured U.S. dollar tranche B term loan.
On the same date, MKS entered into a Sixth Amendment to its Credit Agreement, replacing the prepaid term loan with a new $914 million U.S. dollar tranche B term loan and refinancing its €587 million euro tranche B term loan and revolving credit facility. The revolving facility was increased to $1.0 billion, loan margins were reduced across term loans and revolver, and maturities for the term loans and revolver were extended.
MKS Inc. plans a private Offering of €1.0 billion aggregate principal amount of senior notes due 2034. The company expects net proceeds of about €985 million after purchaser discounts and expenses. It intends to combine these funds with other refinancing proceeds and cash to prepay approximately $1.3 billion of, and refinance in full, its $2.2 billion U.S. dollar tranche B term loan and to refinance in full its €587 million euro tranche B term loan. The Offering is expected to close on February 4, 2026, subject to customary conditions, and is not contingent on completion of the term loan refinancing.