David Philip Henry
CIK: 0001842459
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
MKS INC
Discretionary Trading P&L
Holdings
Transaction History (23 total)
- Jun 1, 2026MKSI
MKS INC
Sale(S)Direct6K shares at avg. $314.43$1.9M - May 26, 2026MKSI
MKS INC
Sale(S)Direct2.5K shares at avg. $330.50$826K - Feb 20, 2026MKSI
MKS INC
Sale(S)Direct2K shares at avg. $261.56$523K - Feb 17, 2026MKSI
MKS INC
Exercise(M)Direct2.4K shares- - Feb 17, 2026MKSI
MKS INC
Exercise(M)Direct456 shares- - Feb 17, 2026MKSI
MKS INC
Exercise(M)Direct1.2K shares- - Feb 17, 2026MKSI
MKS INC
Award(A)DirectRestricted Stock Unit
2.6K shares- - Feb 17, 2026MKSI
MKS INC
Tax Payment(F)Direct4.1K shares at avg. $260.74$1.1M - Feb 17, 2026MKSI
MKS INC
Exercise(M)Direct2.1K shares- - Feb 17, 2026MKSI
MKS INC
Exercise(M)Direct1.8K shares- - Feb 17, 2026MKSI
MKS INC
Exercise(M)Direct1.3K shares- - Feb 8, 2026MKSI
MKS INC
Award(A)DirectRestricted Stock Unit
5.5K shares- - Sep 18, 2025MKSI
MKS INC
Sale(S)Direct5K shares at avg. $130.00$650K - Jul 3, 2025MKSI
MKS INC
Sale(S)Direct2K shares at avg. $105.00$210K - Feb 18, 2025MKSI
MKS INSTRUMENTS INC
Exercise(M)Direct1.5K shares- - Feb 18, 2025MKSI
MKS INSTRUMENTS INC
Exercise(M)Direct1.3K shares- - Feb 18, 2025MKSI
MKS INSTRUMENTS INC
Exercise(M)Direct456 shares- - Feb 18, 2025MKSI
MKS INSTRUMENTS INC
Exercise(M)Direct1.2K shares- - Feb 18, 2025MKSI
MKS INSTRUMENTS INC
Exercise(M)Direct2.4K shares- - Feb 18, 2025MKSI
MKS INSTRUMENTS INC
Award(A)DirectRestricted Stock Unit
6.2K shares- - Feb 18, 2025MKSI
MKS INSTRUMENTS INC
Tax Payment(F)Direct2.4K shares at avg. $103.67$246K - Feb 18, 2025MKSI
MKS INSTRUMENTS INC
Exercise(M)Direct1.1K shares- - Feb 10, 2025MKSI
MKS INSTRUMENTS INC
Award(A)DirectRestricted Stock Unit
1.4K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Jun 1, 2026 | MKSI MKS INC | Sale(S) | 6,000 | $314.43 | $1,886,583 | Direct |
| May 26, 2026 | MKSI MKS INC | Sale(S) | 2,500 | $330.50 | $826,250 | Direct |
| Feb 20, 2026 | MKSI MKS INC | Sale(S) | 2,000 | $261.56 | $523,120 | Direct |
| Feb 17, 2026 | MKSI MKS INC | Exercise(M) | 2,406 | - | $0 | Direct |
| Feb 17, 2026 | MKSI MKS INC | Exercise(M) | 456 | - | $0 | Direct |
| Feb 17, 2026 | MKSI MKS INC | Exercise(M) | 1,247 | - | $0 | Direct |
| Feb 17, 2026 | MKSI MKS INC | Award(A) Restricted Stock Unit | 2,567 | - | - | Direct |
| Feb 17, 2026 | MKSI MKS INC | Tax Payment(F) | 4,097 | $260.74 | $1,068,322 | Direct |
| Feb 17, 2026 | MKSI MKS INC | Exercise(M) | 2,054 | - | $0 | Direct |
| Feb 17, 2026 | MKSI MKS INC | Exercise(M) | 1,841 | - | $0 | Direct |
| Feb 17, 2026 | MKSI MKS INC | Exercise(M) | 1,278 | - | $0 | Direct |
| Feb 8, 2026 | MKSI MKS INC | Award(A) Restricted Stock Unit | 5,522 | - | - | Direct |
| Sep 18, 2025 | MKSI MKS INC | Sale(S) | 5,000 | $130.00 | $650,000 | Direct |
| Jul 3, 2025 | MKSI MKS INC | Sale(S) | 2,000 | $105.00 | $210,000 | Direct |
| Feb 18, 2025 | MKSI MKS INSTRUMENTS INC | Exercise(M) | 1,528 | - | - | Direct |
| Feb 18, 2025 | MKSI MKS INSTRUMENTS INC | Exercise(M) | 1,278 | - | - | Direct |
| Feb 18, 2025 | MKSI MKS INSTRUMENTS INC | Exercise(M) | 456 | - | - | Direct |
| Feb 18, 2025 | MKSI MKS INSTRUMENTS INC | Exercise(M) | 1,246 | - | - | Direct |
| Feb 18, 2025 | MKSI MKS INSTRUMENTS INC | Exercise(M) | 2,406 | - | - | Direct |
| Feb 18, 2025 | MKSI MKS INSTRUMENTS INC | Award(A) Restricted Stock Unit | 6,163 | - | - | Direct |
| Feb 18, 2025 | MKSI MKS INSTRUMENTS INC | Tax Payment(F) | 2,372 | $103.67 | $245,905 | Direct |
| Feb 18, 2025 | MKSI MKS INSTRUMENTS INC | Exercise(M) | 1,099 | - | - | Direct |
| Feb 10, 2025 | MKSI MKS INSTRUMENTS INC | Award(A) Restricted Stock Unit | 1,369 | - | - | Direct |
1-23 of 23 transactions
About Henry David Philip
Henry David Philip (SEC CIK 0001842459) files insider reports with the SEC as EVP, Global Str Mktg & GM, MSD of MKS INC (MKSI).
Signal8 holds 9 ownership filings by Henry David Philip, all Form 4s, filed between Feb 11, 2025 and Jun 2, 2026. Those filings report 23 transactions, from Feb 10, 2025 to Jun 1, 2026. Signal8's Form 4 history starts in Sep 2024.
The business address on Henry David Philip's filings is in ANDOVER, MA.
Recent filings by Henry David Philip
- Jun 1, 2026: Open-market sale of MKSI shares (Form 4, code S).
- May 26, 2026: Open-market sale of MKSI shares (Form 4, code S).
- Feb 20, 2026: Open-market sale of MKSI shares (Form 4, code S).
- Feb 17, 2026: Option exercises of MKSI shares (3 lines, Form 4, code M).
- Feb 17, 2026: Grant or award of MKSI derivative securities (Form 4, code A).
Other insiders filing for MKS INC (MKSI)
- Lee John Tseng-Chung, President & CEO
- Mora Elizabeth, Director
- Donlan Renee Martel, EVP, GC & CCO
- Williams John Edward, EVP & GM, PSD
- Schreiner James Alan, EVP & COO
- McCarthy Michelle M, SVP & Chief Accounting Officer