MKS Inc. (MKSI) SVP Michelle McCarthy logs RSU grant, vesting and tax share withholding
Filing Impact
Filing Sentiment
Form Type
4
Rhea-AI Filing Summary
MKS Inc. senior vice president and chief accounting officer Michelle M. McCarthy reported equity compensation activity involving restricted stock units (RSUs) and related common stock on April 15, 2026. She received a grant of 1,672.862 RSUs, each representing a contingent right to one share of MKS common stock, which will vest in three equal annual installments beginning on April 15, 2027.
On the same date, RSUs in amounts of 968, 1,107, and 1,736 units were exercised or converted into the same number of common shares as part of earlier awards that vest in three annual installments beginning on April 15, 2025 and April 15, 2026. To cover tax withholding obligations triggered by these vestings, 1,375.451 common shares were withheld by MKS Inc. at a price of $274.15 per share, which the filing notes was not a discretionary trade. Following these transactions, McCarthy directly held 2,435.549 shares of common stock and 7,388.160 RSUs.
Positive
- None.
Negative
- None.
Insider Trade Summary
3,811 shares exercised/converted
Mixed
8 txns
Insider
McCarthy Michelle M
Role
SVP & Chief Accounting Officer
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Grant/Award | Restricted Stock Unit | 1,672.862 | $0.00 | -- |
| Exercise | Restricted Stock Unit | 968 | $0.00 | -- |
| Exercise | Restricted Stock Unit | 1,107 | $0.00 | -- |
| Exercise | Restricted Stock Unit | 1,736 | $0.00 | -- |
| Exercise | Common Stock | 968 | $0.00 | -- |
| Exercise | Common Stock | 1,107 | $0.00 | -- |
| Exercise | Common Stock | 1,736 | $0.00 | -- |
| Tax Withholding | Common Stock | 1,375.451 | $274.15 | $377K |
Holdings After Transaction:
Restricted Stock Unit — 11,199.16 shares (Direct);
Common Stock — 968 shares (Direct)
Footnotes (1)
- Each restricted stock unit (RSU) represents the contingent right to receive one share of common stock of MKS Inc. These shares were withheld by MKS Inc. to satisfy the tax withholding obligations triggered by the vesting of RSUs and do not represent a discretionary trade by the reporting person. These RSUs vest in three equal annual installments commencing on April 15, 2027, provided that if, in any vesting year, April 15th is not a business day, such vesting shall occur on the next business day. These RSUs vest in three equal annual installments commencing on April 15, 2025, provided that if, in any vesting year, April 15th is not a business day, such vesting shall occur on the next business day. These RSUs vest in three equal annual installments commencing on April 15, 2026, provided that if, in any vesting year, April 15th is not a business day, such vesting shall occur on the next business day.
Key Figures
New RSU grant: 1,672.862 RSUs
RSUs exercised or converted: 3,811 RSUs
Tax withholding shares: 1,375.451 shares at $274.15
+3 more
6 metrics
New RSU grant
1,672.862 RSUs
Grant on April 15, 2026 to SVP & Chief Accounting Officer
RSUs exercised or converted
3,811 RSUs
968 + 1,107 + 1,736 units converting into common stock
Tax withholding shares
1,375.451 shares at $274.15
Shares withheld by MKS Inc. to satisfy RSU tax obligations
Common stock held
2,435.549 shares
Direct common stock ownership following April 15, 2026 transactions
RSUs remaining
7,388.160 RSUs
Restricted stock units outstanding after grant and vesting activity
Post-grant RSU balance
11,199.160 RSUs
Total RSUs directly held immediately after new grant
Key Terms
Restricted Stock Unit, tax withholding obligations, derivative security, grant, award, or other acquisition, +1 more
5 terms
Restricted Stock Unit financial
"Each restricted stock unit (RSU) represents the contingent right to receive one share of common stock of MKS Inc."
A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.
tax withholding obligations financial
"These shares were withheld by MKS Inc. to satisfy the tax withholding obligations triggered by the vesting of RSUs"
derivative security financial
"Exercise or conversion of derivative security"
A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.
grant, award, or other acquisition financial
"transaction_code_description: Grant, award, or other acquisition"
contingent right financial
"represents the contingent right to receive one share of common stock"
FAQ
What insider transactions did MKSI executive Michelle McCarthy report on April 15, 2026?
Michelle McCarthy reported RSU-related transactions on April 15, 2026, including a grant of 1,672.862 restricted stock units and vesting of prior RSU awards into 3,811 common shares. The activity reflects equity compensation, not open-market buying or selling.
How many MKS Inc. (MKSI) restricted stock units were granted to Michelle McCarthy?
She was granted 1,672.862 restricted stock units, each representing a contingent right to one share of MKS common stock. These RSUs vest in three equal annual installments starting April 15, 2027, subject to the business day convention described in the filing.
When do Michelle McCarthy’s new and existing MKS Inc. RSUs vest?
The newly granted 1,672.862 RSUs vest in three equal annual installments beginning April 15, 2027. Other RSU tranches referenced vest in three annual installments beginning April 15, 2025 and April 15, 2026, with vesting shifted to the next business day if April 15 is not one.