Senior insider sale
President & COO at MKS INC — senior position signals high conviction
$6.17M
20K shares
What this filing means
LEE JOHN TSENG-CHUNG plans to sell 20K shares of MKS INC valued at approximately $6.17M. Form 144 is a notice of intent to sell restricted or control securities — not a mandatory transaction. This filing provides advance warning of potential selling pressure.
Filed: 8/14/2026ACC: 0001959173-26-006008
Officer· President & COO
Since Jan 2019
20K
Shares to sell
$6.17M
Approx. market value
10K
Acquired (3 months)
1
Planned
1 completed
Securities Acquired — Last 3 Months2
Restricted Stock Vesting
Compensation
2/15/2022
367.00Restricted Stock Vesting
Compensation
2/15/2021
9.63KTotal acquired10K
| Acquisition Date | Type | Amount Acquired | Gift |
|---|---|---|---|
2/15/2022 | Restricted Stock Vesting Compensation | 367.00 | — |
2/15/2021 | Restricted Stock Vesting Compensation | 9.63K | — |
| Total | 10K | ||
Planned & Completed Dispositions2
Completed
—Completed
Units to sell
10K
Market value
$3.15M
5/22/2026
Planned — Approximate Date
NASDAQPlanned
Units to sell
10K
Market value
$3.02M
8/14/2026
Total
Units
20K
Value
$6.17M
| Date | Units to Sell | Approx. Market Value | Exchange | Status |
|---|---|---|---|---|
| Completed | ||||
5/22/2026 | 10K | $3.15M | — | Completed |
| Planned — Approximate Date | ||||
8/14/2026 | 10K | $3.02M | NASDAQ | Planned |
| Total | 20K | $6.17M | ||