Michael C Harrington

CIK 1666734 · View on SEC EDGAR ↗

Insider

First SEC filing: Feb. 11, 2016 · Latest: Feb. 11, 2016

On this page

Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 41 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

41 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
Aug. 24, 2020 WAT S 13,527 $215.64 $2,916,962 2,286 Direct -85.54% Disposed 92.4% (price as of 2026-08-20)
Aug. 24, 2020 WAT S 5,254 $215.88 $1,134,234 2,286 Direct -69.68% Disposed 92.1% (price as of 2026-08-20)
Aug. 24, 2020 WAT S 5,600 $215.91 $1,209,096 2,286 Direct -71.01% Disposed 92.1% (price as of 2026-08-20)
Nov. 13, 2019 WAT S 7,871 $213.27 $1,678,648 0 Direct -100.00% Disposed 94.5% (price as of 2026-08-20)
Nov. 13, 2019 WAT S 15,761 $213.32 $3,362,137 0 Direct -100.00% Disposed 94.4% (price as of 2026-08-20)
Feb. 13, 2019 WAT S 22,400 $234.93 $5,262,432 0 Direct -100.00% Disposed 76.6% (price as of 2026-08-20)
Jan. 30, 2019 WAT S 20,000 $230.24 $4,604,800 0 Direct -100.00% Disposed 80.2% (price as of 2026-08-20)
Dec. 14, 2018 WAT S 1,131 $189.53 $214,358 0 Direct -100.00% Disposed 118.9% (price as of 2026-08-20)
June 1, 2018 WAT S 15,000 $194.64 $2,919,600 2,037 Direct -88.04% Disposed 113.1% (price as of 2026-08-20)
May 7, 2018 WAT S 1,078 $194.34 $209,499 2,037 Direct -34.61% Disposed 113.4% (price as of 2026-08-20)
May 7, 2018 WAT S 15,000 $194.69 $2,920,350 3,115 Direct -82.80% Disposed 113.1% (price as of 2026-08-20)
May 19, 2017 WAT S 24,000 $175.33 $4,207,920 4,073 Direct -85.49% Disposed 136.6% (price as of 2026-08-20)
Feb. 13, 2017 WAT S 16,800 $149.83 $2,517,144 4,073 Direct -80.49% Disposed 176.8% (price as of 2026-08-20)
Feb. 13, 2017 WAT S 2,155 $149.90 $323,034 4,073 Direct -34.60% Disposed 176.7% (price as of 2026-08-20)
June 2, 2016 WAT S 11,200 $139.09 $1,557,808 7,187 Direct -60.91% Disposed 198.2% (price as of 2026-08-20)
June 2, 2016 WAT S 12,000 $139.08 $1,668,960 18,387 Direct -39.49% Disposed 198.2% (price as of 2026-08-20)

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.

Date Ticker Security Underlying Exercise price Expiration Shares A/D
Feb. 18, 2021 WAT Stock Option (Right to Buy) Common Stock (5,397) $280.80 Feb. 18, 2031 5,397 Acquired
Aug. 24, 2020 WAT Stock Option (Right to Buy) Common Stock (13,527) $139.51 Dec. 9, 2026 13,527 Disposed
Aug. 24, 2020 WAT Stock Option (Right to Buy) Common Stock (5,254) $128.93 Dec. 9, 2025 5,254 Disposed
Aug. 24, 2020 WAT Stock Option (Right to Buy) Common Stock (5,600) $113.36 Dec. 11, 2024 5,600 Disposed
Feb. 12, 2020 WAT Stock Option (Right to Buy) Common Stock (10,735) $224.37 Feb. 12, 2030 10,735 Acquired
Nov. 13, 2019 WAT Stock Option (Right to Buy) Common Stock (7,871) $117.68 Feb. 10, 2026 7,871 Disposed
Nov. 13, 2019 WAT Stock Option (Right to Buy) Common Stock (15,761) $128.93 Dec. 9, 2025 15,761 Disposed
Feb. 13, 2019 WAT Stock Option (Right to Buy) Common Stock (22,400) $113.36 Dec. 11, 2024 22,400 Disposed
Jan. 30, 2019 WAT Stock Option (Right to Buy) Common Stock (20,000) $98.21 Dec. 6, 2023 20,000 Disposed
Dec. 10, 2018 WAT Stock Option (Right to Buy) Common Stock (17,078) $189.54 Dec. 10, 2028 17,078 Acquired
June 1, 2018 WAT Stock Option (Right to Buy) Common Stock (15,000) $87.06 Dec. 11, 2022 15,000 Disposed
May 7, 2018 WAT Stock Option (Right to Buy) Common Stock (15,000) $87.06 Dec. 11, 2022 15,000 Disposed
Dec. 5, 2017 WAT Stock Option (Right to Buy) Common Stock (18,055) — Dec. 5, 2027 18,055 Acquired
Dec. 5, 2017 WAT Stock Option (Right to Buy) Common Stock (18,055) $194.25 Dec. 5, 2027 18,055 Acquired
May 19, 2017 WAT Stock Option (Right to Buy) Common Stock (24,000) $79.15 Dec. 7, 2021 24,000 Disposed
Feb. 13, 2017 WAT Stock Option (Right to Buy) Common Stock (16,800) $79.05 Dec. 9, 2020 16,800 Disposed
Dec. 9, 2016 WAT Stock Option (Right to Buy) Common Stock (22,544) $139.51 Dec. 9, 2026 22,544 Acquired
June 2, 2016 WAT Stock Option (Right to Buy) Common Stock (11,200) $79.05 Dec. 9, 2020 11,200 Disposed
June 2, 2016 WAT Stock Option (Right to Buy) Common Stock (12,000) $77.94 Dec. 11, 2017 12,000 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) 8 holdings

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

Date Ticker Security Shares Ownership
Feb. 11, 2016 WAT Common Stock 7,187 Indirect
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 (28,000) 28,000 Direct
Feb. 11, 2016 WAT Stock Option (Right to Buy)→ Common Stock (24,000) 24,000 Direct
Feb. 11, 2016 WAT Stock Option (Right to Buy)→ Common Stock (30,000) 30,000 Direct
Feb. 11, 2016 WAT Stock Option (Right to Buy)→ Common Stock (20,000) 20,000 Direct
Feb. 11, 2016 WAT Stock Option (Right to Buy)→ Common Stock (28,000) 28,000 Direct
Feb. 11, 2016 WAT Stock Option (Right to Buy)→ Common Stock (26,269) 26,269 Direct