United States Healthcare Equipment & Supplies

Waters Corp (WAT)

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Waters Corp has seen no insider trading activity within the last three months. The most recent transactions occurred in March 2026, involving two separate buy orders by insiders Jiang Wei and Richard H. Fearon. Prior to these purchases, the company experienced a mix of buying and selling activity from various insiders over the preceding years.
Ticker: WAT Exchange: NYS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Insider trades have triggered activity signals for Waters Corp. Upgrade to see score, net flow, insiders and the full signal context.

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Top insiders
Trades
Buy 16 Mar 2026
Value US$3,377,807.15 | Price 116.09 | Shares 35,495 (-14.9%)
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-03-18 2026-03-16 B Purchase
3.2
Jiang Wei
Non-Executive Director
35,495 -14.9%
116.09
US$3,377,807 		35,495 -14.9% 116.09 US$3,377,807
2026-03-10 2026-03-06 B Purchase
2.9
FEARON RICHARD H
Non-Executive Director
77,365 -39.2%
87.86
US$2,264,939 		77,365 -39.2% 87.86 US$2,264,939
2024-05-29 2024-05-28 B Purchase
2.9
FEARON RICHARD H
Non-Executive Director
63,806 +38.2%
283.34
US$1,368,319 		63,806 +38.2% 283.34 US$1,368,319
2024-05-16 2024-05-15 S Sale
3.6
KUEBLER CHRISTOPHER A
Non-Executive Director
4,000 -21.4%
361.64
US$1,446,560 		4,000 -21.4% 361.64 US$1,446,560
2024-05-15 2024-05-15 PrS Proposed sale
3.6
KUEBLER CHRISTOPHER A

Director

Non-Executive Director
4,000
361.64
US$1,446,560 		4,000 361.64 US$1,446,560
2024-03-14 2024-03-13 S Sale
2.5
BADDOUR LINDA
Non-Executive Director
500 -18.2%
355.54
US$177,770 		500 -18.2% 355.54 US$177,770
2023-12-15 2023-12-15 PrS Proposed sale
Pratt Jonathan M

Former Officer

Officer
2,116
320.77
US$678,758 		2,116 320.77 US$678,758
2023-12-08 2023-12-08 PrS Proposed sale
Pratt Jonathan M

Former Officer

Officer
2,158
293.30
US$632,950 		2,158 293.30 US$632,950
2023-11-15 2023-11-15 PrS Proposed sale
Pratt Jonathan M

Former Officer

Officer
8,758
266.68
US$2,335,547 		8,758 266.68 US$2,335,547
2023-08-07 2023-08-04 S Sale
3.6
KUEBLER CHRISTOPHER A
Non-Executive Director
4,000 -21.8%
291.48
US$1,165,920 		4,000 -21.8% 291.48 US$1,165,920
2023-08-04 2023-08-04 PrS Proposed sale
3.6
KUEBLER CHRISTOPHER A

Director

Non-Executive Director
4,000
291.48
US$1,165,920 		4,000 291.48 US$1,165,920
2023-03-01 2023-02-28 B Purchase
2.3
VERGNANO MARK P
Non-Executive Director
3,185 +856.2%
313.32
US$997,927 		3,185 +856.2% 313.32 US$997,927
2022-12-01 2022-11-30 S Sale
2.8
CONARD EDWARD
Non-Executive Director
1,059 -1.4%
334.70
US$354,447 		1,059 -1.4% 334.70 US$354,447
2022-05-23 2022-05-19 S Sale
3.6
KUEBLER CHRISTOPHER A
Non-Executive Director
4,000 -22.1%
328.78
US$1,315,120 		4,000 -22.1% 328.78 US$1,315,120
2021-12-03 2021-12-02 S Sale
2.8
CONARD EDWARD
Non-Executive Director
4,000 -5.3%
336.01
US$1,344,040 		4,000 -5.3% 336.01 US$1,344,040
2021-08-17 2021-08-16 S Sale
2.5
BADDOUR LINDA
Non-Executive Director
1,260 -41.2%
408.99
US$515,327 		1,260 -41.2% 408.99 US$515,327
2021-05-25 2021-05-24 S Sale
1.9
BERENDT MICHAEL J
Non-Executive Director
1,161 -5.2%
318.24
US$369,477 		1,161 -5.2% 318.24 US$369,477
2021-05-14 2021-05-13 S Sale
2.5
BADDOUR LINDA
Non-Executive Director
1,249 -41.0%
314.99
US$393,423 		1,249 -41.0% 314.99 US$393,423
2021-03-08 2021-03-05 S Sale
2.5
REED JOANN A
Non-Executive Director
1,600 -3.9%
263.31
US$421,296 		1,600 -3.9% 263.31 US$421,296
2021-02-10 2021-02-09 S Sale
2.5
REED JOANN A
Non-Executive Director
1,738 -4.2%
282.36
US$490,742 		1,738 -4.2% 282.36 US$490,742
2021-02-10 2021-02-09 S Sale
2.5
REED JOANN A
Non-Executive Director
1,614 -4.1%
282.51
US$455,971 		1,614 -4.1% 282.51 US$455,971
2021-02-10 2021-02-09 S Sale
2.5
REED JOANN A
Non-Executive Director
1,407 -3.8%
282.30
US$397,196 		1,407 -3.8% 282.30 US$397,196
2020-12-07 2020-12-04 S Sale
2.8
CONARD EDWARD
Non-Executive Director
1,322 -1.8%
236.59
US$312,772 		1,322 -1.8% 236.59 US$312,772
2020-11-13 2020-11-12 S Sale
2.0
Carson Robert G

SVP Corporate Development

Officer
2,277 -66.0%
227.95
US$519,031 		2,277 -66.0% 227.95 US$519,031
2020-11-10 2020-11-09 S Sale
1.9
BERENDT MICHAEL J
Non-Executive Director
4,000 -15.4%
230.10
US$920,400 		4,000 -15.4% 230.10 US$920,400
2020-11-02 2020-10-30 S Sale
2.4
Buck Sherry

SVP and CFO

Officer
17,499 -82.5%
221.62
US$3,878,128 		17,499 -82.5% 221.62 US$3,878,128
2020-08-25 2020-08-24 S Sale
2.8
Harrington Michael C

SVP, Global Markets

Officer
13,527 -85.5%
215.64
US$2,916,962 		13,527 -85.5% 215.64 US$2,916,962
2020-08-25 2020-08-24 S Sale
2.8
Harrington Michael C

SVP, Global Markets

Officer
5,254 -69.7%
215.88
US$1,134,234 		5,254 -69.7% 215.88 US$1,134,234
2020-08-25 2020-08-24 S Sale
2.8
Harrington Michael C

SVP, Global Markets

Officer
5,600 -71.0%
215.91
US$1,209,096 		5,600 -71.0% 215.91 US$1,209,096
2020-08-21 2020-08-20 S Sale
2.5
Rae Elizabeth B

SVP, Global HR

Officer
6,380 -48.8%
213.50
US$1,362,130 		6,380 -48.8% 213.50 US$1,362,130
2020-08-20 2020-08-19 S Sale
2.6
King Ian

SVP, Global Products

Officer
12,000 -69.8%
218.44
US$2,621,280 		12,000 -69.8% 218.44 US$2,621,280
2020-08-06 2020-08-05 S Sale
2.9
Aleman Keeley A

SVP General Counsel & Corp Sec

Officer
150 -10.7%
210.47
US$31,570 		150 -10.7% 210.47 US$31,570
2020-08-03 2020-07-31 S Sale
1.0
OConnell Christopher J

CEO and President

Officer
30,000 -52.1%
213.30
US$6,399,000 		30,000 -52.1% 213.30 US$6,399,000
2020-05-19 2020-05-18 S Sale
2.5
Rae Elizabeth B

SVP, Global HR

Officer
5,000 -42.8%
183.53
US$917,650 		5,000 -42.8% 183.53 US$917,650
2020-02-27 2020-02-26 S Sale
3.6
Kim Francis

SVP Global Operations

Officer
1,471 -45.6%
207.33
US$304,982 		1,471 -45.6% 207.33 US$304,982
2020-02-24 2020-02-21 S Sale
2.9
Aleman Keeley A

SVP General Counsel & Corp Sec

Officer
36 -40.0%
216.75
US$7,803 		36 -40.0% 216.75 US$7,803
2020-02-24 2020-02-21 S Sale
2.9
Aleman Keeley A

SVP General Counsel & Corp Sec

Officer
115 -12.5%
216.79
US$24,931 		115 -12.5% 216.79 US$24,931
2020-02-07 2020-02-06 S Sale
3.6
Kim Francis

SVP Global Operations

Officer
2,277 -56.5%
220.03
US$501,008 		2,277 -56.5% 220.03 US$501,008
2020-02-07 2020-02-06 S Sale
3.6
Kim Francis

SVP Global Operations

Officer
1,827 -51.0%
220.01
US$401,958 		1,827 -51.0% 220.01 US$401,958
2020-02-07 2020-02-06 S Sale
3.6
Kim Francis

SVP Global Operations

Officer
1,472 -45.6%
220.13
US$324,031 		1,472 -45.6% 220.13 US$324,031
2020-02-07 2020-02-06 S Sale
3.6
Kim Francis

SVP Global Operations

Officer
912 -34.2%
220.15
US$200,777 		912 -34.2% 220.15 US$200,777
2020-01-03 2020-01-02 PlS Planned sale
2.5
REED JOANN A
Non-Executive Director
5,194 -13.9%
234.67
US$1,218,876 		5,194 -13.9% 234.67 US$1,218,876
2020-01-03 2020-01-02 PlS Planned sale
1.9
BERENDT MICHAEL J
Non-Executive Director
4,000 -15.7%
234.93
US$939,720 		4,000 -15.7% 234.93 US$939,720
2019-11-27 2019-11-26 S Sale
2.8
CONARD EDWARD
1,112 -1.6%
221.97
US$246,831 		1,112 -1.6% 221.97 US$246,831
2019-11-18 2019-11-15 S Sale BEAUDOUIN MARK T

SVP and General Counsel

Officer
762 -15.7%
215.00
US$163,820 		762 -15.7% 215.00 US$163,820
2019-11-18 2019-11-15 S Sale BEAUDOUIN MARK T

SVP and General Counsel

Officer
2,413 -100.0%
215.00
US$518,805 		2,413 -100.0% 215.00 US$518,805
2019-11-14 2019-11-13 S Sale
2.5
BEAUDOUIN MARK T

SVP and General Counsel
825 -25.5%
215.00
US$177,375 		825 -25.5% 215.00 US$177,375
2019-11-14 2019-11-13 S Sale
2.6
King Ian

SVP, Global Products
20,625 -86.2%
213.39
US$4,401,169 		20,625 -86.2% 213.39 US$4,401,169
2019-11-14 2019-11-13 S Sale
2.8
Harrington Michael C

SVP, Global Markets
7,871 -100.0%
213.27
US$1,678,648 		7,871 -100.0% 213.27 US$1,678,648
2019-11-14 2019-11-13 S Sale
2.8
Harrington Michael C

SVP, Global Markets
15,761 -100.0%
213.32
US$3,362,137 		15,761 -100.0% 213.32 US$3,362,137
2019-11-13 2019-11-12 S Sale King Ian

SVP, Global Products

Officer
2,375 -41.9%
213.19
US$506,326 		2,375 -41.9% 213.19 US$506,326
2019-11-08 2019-11-07 S Sale Rae Elizabeth B

SVP, Global HR

Officer
2,674 -35.8%
214.26
US$572,931 		2,674 -35.8% 214.26 US$572,931
2019-11-08 2019-11-07 S Sale Rae Elizabeth B

SVP, Global HR

Officer
7,514 -61.0%
214.04
US$1,608,297 		7,514 -61.0% 214.04 US$1,608,297
2019-11-08 2019-11-07 S Sale Rae Elizabeth B

SVP, Global HR

Officer
19,138 -80.0%
212.60
US$4,068,739 		19,138 -80.0% 212.60 US$4,068,739
2019-11-04 2019-11-01 S Sale GLIMCHER LAURIE H M.D. Non-Executive Director
2,200 -37.9%
214.64
US$472,208 		2,200 -37.9% 214.64 US$472,208
2019-11-04 2019-11-01 S Sale SALICE THOMAS P Non-Executive Director
2,000 -10.0%
214.75
US$429,500 		2,000 -10.0% 214.75 US$429,500
2019-03-12 2019-03-11 S Sale
2.7
Kelly Terrence P

SVP, President TA Instruments

Officer
60 -37.5%
239.69
US$14,381 		60 -37.5% 239.69 US$14,381
2019-03-12 2019-03-11 S Sale
2.7
Kelly Terrence P

SVP, President TA Instruments

Officer
1,946 -100.0%
239.69
US$466,437 		1,946 -100.0% 239.69 US$466,437
2019-03-07 2019-03-06 S Sale
2.0
Carson Robert G

SVP Corporate Development

Officer
2,724 -69.9%
241.23
US$657,111 		2,724 -69.9% 241.23 US$657,111
2019-02-27 2019-02-26 S Sale
2.6
GLIMCHER LAURIE H M.D.
Non-Executive Director
1,485 -20.4%
238.69
US$354,455 		1,485 -20.4% 238.69 US$354,455
2019-02-26 2019-02-25 S Sale
1.9
BERENDT MICHAEL J
Non-Executive Director
3,000 -12.2%
239.64
US$718,920 		3,000 -12.2% 239.64 US$718,920
2019-02-14 2019-02-13 S Sale
2.8
Harrington Michael C

SVP, Global Markets

Officer
22,400 -100.0%
234.93
US$5,262,432 		22,400 -100.0% 234.93 US$5,262,432
2019-02-13 2019-02-12 S Sale
2.3
SILVEIRA MICHAEL F

VP, Corporate Controller

Officer
10,000 -92.6%
233.43
US$2,334,300 		10,000 -92.6% 233.43 US$2,334,300
2019-02-12 2019-02-11 S Sale
2.7
Kelly Terrence P

SVP, President TA Instruments

Officer
1,312 -40.3%
232.03
US$304,423 		1,312 -40.3% 232.03 US$304,423
2019-02-06 2019-02-05 S Sale
2.5
Rae Elizabeth B

SVP, Global HR

Officer
6,800 -58.7%
232.29
US$1,579,572 		6,800 -58.7% 232.29 US$1,579,572
2019-02-06 2019-02-05 S Sale
2.5
Rae Elizabeth B

SVP, Global HR

Officer
4,000 -45.5%
232.44
US$929,760 		4,000 -45.5% 232.44 US$929,760
2019-01-31 2019-01-30 S Sale
2.3
SALICE THOMAS P
Non-Executive Director
2,000 -10.0%
231.59
US$463,180 		2,000 -10.0% 231.59 US$463,180
2019-01-31 2019-01-30 S Sale
2.8
Harrington Michael C

SVP, Global Markets

Officer
20,000 -100.0%
230.24
US$4,604,800 		20,000 -100.0% 230.24 US$4,604,800
2019-01-29 2019-01-28 S Sale
2.6
King Ian

SVP, Global Products

Officer
23,000 -87.5%
228.09
US$5,246,070 		23,000 -87.5% 228.09 US$5,246,070
2019-01-29 2019-01-28 S Sale
2.7
Kelly Terrence P

SVP, President TA Instruments

Officer
2,942 -60.2%
228.95
US$673,571 		2,942 -60.2% 228.95 US$673,571
2019-01-28 2019-01-25 S Sale
3.6
Kim Francis

SVP Global Operations

Officer
913 -32.7%
226.39
US$206,694 		913 -32.7% 226.39 US$206,694
2019-01-28 2019-01-25 S Sale
2.5
BEAUDOUIN MARK T

SVP and General Counsel

Officer
27,848 -85.2%
225.36
US$6,275,825 		27,848 -85.2% 225.36 US$6,275,825
2019-01-04 2019-01-02 PlS Planned sale
2.5
REED JOANN A
Non-Executive Director
708 -3.3%
188.65
US$133,564 		708 -3.3% 188.65 US$133,564
2019-01-04 2019-01-02 PlS Planned sale
1.9
BERENDT MICHAEL J
Non-Executive Director
3,500 -12.8%
184.74
US$646,590 		3,500 -12.8% 184.74 US$646,590
2018-12-17 2018-12-14 S Sale Harrington Michael C

SVP, Global Markets

Officer
1,131 -100.0%
189.53
US$214,358 		1,131 -100.0% 189.53 US$214,358
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