Henry David Philip sold ~$1.9M in MKSI stock
MKSI (MKSI) · EVP, Global Str Mktg & GM, MSD · Data via SEC EDGAR Form 4
Price Performance · 10 days before → 90 days after trade
▲ = insider buy date
Trade Details · Public SEC Filing
Insider
Henry David Philip
Role
EVP, Global Str Mktg & GM, MSD
Transaction
Open-Market Sale
Approx. Value
~$1.9M
Trade Date
Jun 1, 2026
Company
MKSI
Ticker
MKSISource
SEC EDGAR Form 4
Why This Trade Stands Out
Very Strong conviction signal
Scored in the top tier across multiple factors. Fewer than 5% of insider trades receive this rating.
~$1.9M sale
Trades over $1M are rare. When insiders put this much of their own money on the line, they tend to have high conviction in their company's direction.
EVP, Global Str Mktg & GM, MSD
Senior executives have visibility into their division's pipeline and company health. Their trades carry weight because they understand the business from the inside.
How good is Henry David Philip at picking stocks?
Full track record: win rate, average return, and performance vs S&P 500
On June 1, 2026, Henry David Philip — EVP, Global Str Mktg & GM, MSD of MKSI — filed a Form 4 with the SEC disclosing an open-market sale of approximately ~$1.9M in MKSI (MKSI) stock.
Under Section 16(a) of the Securities Exchange Act of 1934, corporate insiders must report all open-market stock transactions to the SEC within two business days. These filings — known as Form 4s — are publicly available on the SEC's EDGAR database. VeritySignals filters and scores the full Form 4 stream to surface high-conviction signals like this one.
VeritySignals Conviction Analysis
Full Conviction Analysis
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All data sourced from publicly available SEC Form 4 filings via EDGAR · Not financial advice · Past performance does not guarantee future results.
At a Glance
More MKSI Insider Activity
Schreiner James Alan
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Donahue Joseph B
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Burke Kathleen Flaherty
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Burke Kathleen Flaherty
May 14, 2026
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How to Read Insider Trades
What is this?
When company executives buy or sell their own stock, they must report it to the SEC within 2 days. These public filings reveal what the people who know the company best are doing with their own money.
Why does it matter?
Insiders can sell for many reasons (taxes, diversification, expenses), but they generally only buy for one: they think the stock is going up. That's why insider purchases are more predictive than sales.
What makes a trade "strong"?
We score trades on 15+ factors: the insider's role (CEO > director), trade size relative to their salary, whether other insiders also bought (clusters), and historical accuracy of the insider.
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