Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 30 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

30 other filings hidden
DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
Aug. 19, 2020 WAT S 12,000 $218.44 $2,621,280 5,200 Direct -69.77% Disposed 101.5% (price as of 2026-10-05)
Nov. 13, 2019 WAT S 20,625 $213.39 $4,401,169 3,300 Direct -86.21% Disposed 106.3% (price as of 2026-10-05)
Nov. 12, 2019 WAT S 2,375 $213.19 $506,326 3,300 Direct -41.85% Disposed 106.4% (price as of 2026-10-05)
Jan. 28, 2019 WAT S 23,000 $228.09 $5,246,070 3,300 Direct -87.45% Disposed 93.0% (price as of 2026-10-05)
May 8, 2017 WAT S 1,801 $174.03 $313,428 4,080 Direct -30.62% Disposed 152.9% (price as of 2026-10-05)
May 5, 2017 WAT S 11,199 $174.00 $1,948,626 4,080 Direct -73.30% Disposed 152.9% (price as of 2026-10-05)
Aug. 19, 2016 WAT S 10,000 $160.23 $1,602,300 4,559 Direct -68.69% Disposed 174.7% (price as of 2026-10-05)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.

06
DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
Feb. 18, 2021 WAT Stock Option (Right to Buy) Common Stock (5,397) $280.80 Feb. 18, 2031 5,397 Acquired
Aug. 19, 2020 WAT Stock Option (Right to Buy) Common Stock (12,000) $98.21 Dec. 6, 2023 12,000 Disposed
Feb. 12, 2020 WAT Stock Option (Right to Buy) Common Stock (11,629) $224.37 Feb. 12, 2030 11,629 Acquired
Nov. 13, 2019 WAT Stock Option (Right to Buy) Common Stock (20,625) $87.06 Dec. 11, 2022 20,625 Disposed
Nov. 12, 2019 WAT Stock Option (Right to Buy) Common Stock (2,375) $87.06 Dec. 11, 2022 2,375 Disposed
Jan. 28, 2019 WAT Stock Option (Right to Buy) Common Stock (23,000) $79.15 Dec. 7, 2021 23,000 Disposed
Dec. 10, 2018 WAT Stock Option (Right to Buy) Common Stock (14,801) $189.54 Dec. 10, 2028 14,801 Acquired
Dec. 5, 2017 WAT Stock Option (Right to Buy) Common Stock (16,048) · Dec. 5, 2027 16,048 Acquired
Dec. 5, 2017 WAT Stock Option (Right to Buy) Common Stock (16,048) $194.25 Dec. 5, 2027 16,048 Acquired
Aug. 17, 2017 WAT Stock Option (Right to Buy) Common Stock (6,660) $180.22 Aug. 17, 2027 6,660 Acquired
May 8, 2017 WAT Stock Option (Right to Buy) Common Stock (1,801) $79.05 Dec. 9, 2020 1,801 Disposed
May 5, 2017 WAT Stock Option (Right to Buy) Common Stock (11,199) $79.05 Dec. 9, 2020 11,199 Disposed
Dec. 9, 2016 WAT Stock Option (Right to Buy) Common Stock (18,787) $139.51 Dec. 9, 2026 18,787 Acquired
Aug. 19, 2016 WAT Stock Option (Right to Buy) Common Stock (10,000) $79.05 Dec. 9, 2020 10,000 Disposed
Feb. 10, 2016 WAT Stock Option (Right to Buy) Common Stock (13,119) $117.68 Feb. 10, 2026 13,119 Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 7 holdings

07

Securities held when first becoming an insider, per SEC Form 3.

DateTickerSecuritySharesOwnership
Feb. 11, 2016 WAT Common Stock 4,559 Indirect
Feb. 11, 2016 WAT Stock Option (Right to Buy)→ Common Stock (23,000) 23,000 Direct
Feb. 11, 2016 WAT Stock Option (Right to Buy)→ Common Stock (23,000) 23,000 Direct
Feb. 11, 2016 WAT Stock Option (Right to Buy)→ Common Stock (23,000) 23,000 Direct
Feb. 11, 2016 WAT Stock Option (Right to Buy)→ Common Stock (12,000) 12,000 Direct
Feb. 11, 2016 WAT Stock Option (Right to Buy)→ Common Stock (19,000) 19,000 Direct
Feb. 11, 2016 WAT Stock Option (Right to Buy)→ Common Stock (17,825) 17,825 Direct