Insider Ledger

WAT insider buying and SEC filings, explained

Waters Corp. · CIK 1000697

Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov

Company profile

Exchanges
NYSE
Industry (SIC)
Laboratory Analytical Instruments
State of incorporation
DE
Fiscal year end
Dec 31

Insider activity in the last 12 months

Bought
$451K
Insiders who bought
2
Sold (not marked 10b5-1)
$0
Planned sales (10b5-1)
$0

Insider purchases and sales, last 12 months

TradedTypeWhat was filedSource
Mar 16, 2026Purchase (code P)Wei Jiang (Director) bought 500 shares at $289.46 ($145K), reported as a purchase (code P). Holdings up 17% to 3,441 shares. Not marked as a 10b5-1 plan trade.SEC filing
Filed Mar 18, 2026
Mar 6, 2026Purchase (code P)Richard H. Fearon (Director) bought 1,000 shares at about $306.34 ($306K), reported as a purchase (code P). Holdings up 43% to 3,302 shares. Not marked as a 10b5-1 plan trade.SEC filing
Filed Mar 10, 2026

42 routine transactions (such as grants, option exercises or tax withholding) are not listed.

Cluster buys

2 insiders bought in 30 days

$451K in purchases since Mar 6, 2026 · Purchases traded Mar 6, 2026 to Mar 16, 2026 · Closed

InsiderValueTradedSource
Richard H. Fearon (Director)$306KMar 6, 2026SEC filing
Wei Jiang (Director)$145KMar 16, 2026SEC filing

Red flags

No red flags in the last 12 months.

Key events

No key events in the last 12 months.

8-K filings, last 12 months

FiledItemsTagSource
Nov 3, 2026, 8:11 AM ET
8-K
Earnings released (Item 2.02)SEC filing

Red flags are objective triggers only: the item or form filed, never an opinion.

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