WAT

Waters Corp /de/

Insider trading activity for Waters Corp /de/, straight from SEC Form 4 filings. Net figures below count open-market buys and sales only — grants, option exercises and tax withholding are excluded because they are compensation, not decisions to trade.

Past 3 months

-$1.4M

net selling

Bought(0 · 0 insiders): $0
Sold(1 · 1 insiders): $1.4M

Past 6 months

-$1.4M

net selling

Bought(0 · 0 insiders): $0
Sold(1 · 1 insiders): $1.4M

Past 12 months

-$991.9K

net selling

Bought(2 · 2 insiders): $451.1K
Sold(1 · 1 insiders): $1.4M

Transaction history

The 79 most recent Form 4 transactions.

Open in screener →

Insider transactions, newest first: date, security, transaction type, size and a link to the filing each row came from.
Date	Insider	Role	Type	Shares	Price	Value	Δ Own	Filing
Aug 6	Kuebler Christopher A	Director	MEXER◆	3,626	—	—	—	Open the original filing on SEC.gov
Aug 6	Kuebler Christopher A	Director	SSELL	3,626	$397.94	$1.4M	-16.9%	Open the original filing on SEC.gov
Aug 6	Kuebler Christopher A	Director	MEXER	3,626	$136.43	$494.7K	+20.4%	Open the original filing on SEC.gov
Jun 30	Knight Heather	Director	AGRANT	63.03	—	—	+5.2%	Open the original filing on SEC.gov
Jun 30	Jiang Wei	Director	AGRANT	67.42	—	—	+1.9%	Open the original filing on SEC.gov
Jun 24	Carpio Robert L III	SVP Waters Analytical…	FTAX	189	$369.18	$69.8K	-5.2%	Open the original filing on SEC.gov
May 12	Chaubal Amol	SVP & Chief Financial…	FTAX	239	$352.21	$84.2K	-3.0%	Open the original filing on SEC.gov
Apr 6	Bennett Jianqing	SVP Waters Adv.…	FTAX	302	$304.09	$91.8K	-4.4%	Open the original filing on SEC.gov
Mar 31	Knight Heather	Director	AGRANT	68.44	—	—	+6.0%	Open the original filing on SEC.gov
Mar 31	Jiang Wei	Director	AGRANT	64.06	—	—	+1.9%	Open the original filing on SEC.gov
Mar 16	Jiang Wei	Director	PBUY★	500	$289.46	$144.7K	+17.0%	Open the original filing on SEC.gov
Mar 6	Fearon Richard H	Director	PBUY★	1,000	$306.34	$306.3K	+43.4%	Open the original filing on SEC.gov
Mar 2	Chaubal Amol	SVP & Chief Financial…	FTAX	709	$307.23	$217.8K	-8.3%	Open the original filing on SEC.gov
Mar 2	Bennett Jianqing	SVP Waters Adv.…	FTAX	410	$307.23	$126K	-5.7%	Open the original filing on SEC.gov
Mar 2	Batra Udit	President and CEO	FTAX	3,417	$307.23	$1M	-9.3%	Open the original filing on SEC.gov
Feb 25	Vergnano Mark	Director	AGRANT◆	57	—	—	—	Open the original filing on SEC.gov
Feb 25	Vergnano Mark	Director	AGRANT	23	—	—	+0.5%	Open the original filing on SEC.gov
Feb 25	Ornskov Flemming	Director	AGRANT◆	57	—	—	—	Open the original filing on SEC.gov
Feb 25	Ornskov Flemming	Director	AGRANT	336	—	—	+6.8%	Open the original filing on SEC.gov
Feb 25	Knight Heather	Director	AGRANT◆	57	—	—	—	Open the original filing on SEC.gov
Feb 25	Knight Heather	Director	AGRANT	23	—	—	+2.0%	Open the original filing on SEC.gov
Feb 25	Kuebler Christopher A	Director	AGRANT◆	57	—	—	—	Open the original filing on SEC.gov
Feb 25	Kuebler Christopher A	Director	AGRANT	23	—	—	+0.1%	Open the original filing on SEC.gov
Feb 25	Jiang Wei	Director	AGRANT◆	57	—	—	—	Open the original filing on SEC.gov
Feb 25	Jiang Wei	Director	AGRANT	23	—	—	+0.8%	Open the original filing on SEC.gov
Feb 25	Huang Pearl S	Director	AGRANT◆	57	—	—	—	Open the original filing on SEC.gov
Feb 25	Huang Pearl S	Director	AGRANT	23	—	—	+0.7%	Open the original filing on SEC.gov
Feb 25	Fraser Claire	Director	AGRANT◆	877	—	—	—	Open the original filing on SEC.gov
Feb 25	Fraser Claire	Director	AGRANT	358	—	—	+273.3%	Open the original filing on SEC.gov
Feb 25	Fearon Richard H	Director	AGRANT◆	57	—	—	—	Open the original filing on SEC.gov
Feb 25	Fearon Richard H	Director	AGRANT	23	—	—	+1.0%	Open the original filing on SEC.gov
Feb 25	Chaubal Amol	SVP & Chief Financial…	AGRANT◆	7,125	—	—	—	Open the original filing on SEC.gov
Feb 25	Chaubal Amol	SVP & Chief Financial…	AGRANT	1,455	—	—	+20.6%	Open the original filing on SEC.gov
Feb 25	Carpio Robert L III	SVP Waters Analytical…	AGRANT◆	4,884	—	—	—	Open the original filing on SEC.gov
Feb 25	Carpio Robert L III	SVP Waters Analytical…	AGRANT	997	—	—	+38.1%	Open the original filing on SEC.gov
Feb 25	Brennan Daniel J.	Director	AGRANT◆	57	—	—	—	Open the original filing on SEC.gov
Feb 25	Brennan Daniel J.	Director	AGRANT	23	—	—	+1.7%	Open the original filing on SEC.gov
Feb 25	Bennett Jianqing	SVP Waters Adv.…	AGRANT◆	4,826	—	—	—	Open the original filing on SEC.gov
Feb 25	Bennett Jianqing	SVP Waters Adv.…	AGRANT	986	—	—	+15.8%	Open the original filing on SEC.gov
Feb 25	Batra Udit	President and CEO	AGRANT◆	25,283	—	—	—	Open the original filing on SEC.gov
Feb 25	Batra Udit	President and CEO	AGRANT	5,165	—	—	+16.4%	Open the original filing on SEC.gov
Feb 25	Baddour Linda	Director	AGRANT◆	57	—	—	—	Open the original filing on SEC.gov
Feb 25	Baddour Linda	Director	AGRANT	23	—	—	+0.8%	Open the original filing on SEC.gov
Feb 5	Chaubal Amol	SVP & Chief Financial…	FTAX	58	$376.89	$21.9K	-0.8%	Open the original filing on SEC.gov
Feb 5	Carpio Robert L III	SVP, Waters Division	FTAX	38	$376.89	$14.3K	-1.4%	Open the original filing on SEC.gov
Feb 5	Bennett Jianqing	SVP TA Instruments…	FTAX	43	$376.89	$16.2K	-0.7%	Open the original filing on SEC.gov
Feb 5	Batra Udit	President and CEO	FTAX	218	$376.89	$82.2K	-0.7%	Open the original filing on SEC.gov
Feb 4	Chaubal Amol	SVP & Chief Financial…	AGRANT	1,884	—	—	+36.1%	Open the original filing on SEC.gov
Feb 4	Bennett Jianqing	SVP TA Instruments…	AGRANT	1,385	—	—	+28.2%	Open the original filing on SEC.gov
Feb 4	Batra Udit	President and CEO	AGRANT	7,066	—	—	+28.8%	Open the original filing on SEC.gov
Jan 2	Vergnano Mark	Director	AGRANT◆	828	—	—	—	Open the original filing on SEC.gov
Jan 2	Vergnano Mark	Director	AGRANT	307	—	—	+7.3%	Open the original filing on SEC.gov
Jan 2	Ornskov Flemming	Director	AGRANT◆	828	—	—	—	Open the original filing on SEC.gov
Jan 2	Ornskov Flemming	Director	AGRANT	307	—	—	+6.6%	Open the original filing on SEC.gov
Jan 2	Knight Heather	Director	AGRANT◆	828	—	—	—	Open the original filing on SEC.gov
Jan 2	Knight Heather	Director	AGRANT	307	—	—	+37.5%	Open the original filing on SEC.gov
Jan 2	Kuebler Christopher A	Director	AGRANT◆	828	—	—	—	Open the original filing on SEC.gov
Jan 2	Kuebler Christopher A	Director	AGRANT	307	—	—	+1.8%	Open the original filing on SEC.gov
Jan 2	Jiang Wei	Director	AGRANT◆	828	—	—	—	Open the original filing on SEC.gov
Jan 2	Jiang Wei	Director	AGRANT	307	—	—	+11.8%	Open the original filing on SEC.gov
Jan 2	Huang Pearl S	Director	AGRANT◆	828	—	—	—	Open the original filing on SEC.gov
Jan 2	Huang Pearl S	Director	AGRANT	307	—	—	+10.4%	Open the original filing on SEC.gov
Jan 2	Fearon Richard H	Director	AGRANT◆	828	—	—	—	Open the original filing on SEC.gov
Jan 2	Fearon Richard H	Director	AGRANT	307	—	—	+15.6%	Open the original filing on SEC.gov
Jan 2	Brennan Daniel J.	Director	AGRANT◆	828	—	—	—	Open the original filing on SEC.gov
Jan 2	Brennan Daniel J.	Director	AGRANT	307	—	—	+29.9%	Open the original filing on SEC.gov
Jan 2	Baddour Linda	Director	AGRANT◆	828	—	—	—	Open the original filing on SEC.gov
Jan 2	Baddour Linda	Director	AGRANT	307	—	—	+11.9%	Open the original filing on SEC.gov
Dec 31, 2025	Knight Heather	Director	AGRANT	59.79	—	—	+7.9%	Open the original filing on SEC.gov
Dec 31, 2025	Jiang Wei	Director	AGRANT	59.79	—	—	+2.3%	Open the original filing on SEC.gov
Nov 5, 2025	Kuebler Christopher A	Director	MEXER◆	3,761	—	—	—	Open the original filing on SEC.gov
Nov 5, 2025	Kuebler Christopher A	Director	FTAX	1,318	$371.97	$490.3K	-7.0%	Open the original filing on SEC.gov
Nov 5, 2025	Kuebler Christopher A	Director	MEXER	3,761	$130.35	$490.2K	+25.0%	Open the original filing on SEC.gov
Sep 30, 2025	Knight Heather	Director	AGRANT	77.88	—	—	+11.4%	Open the original filing on SEC.gov
Sep 30, 2025	Jiang Wei	Director	AGRANT	72.91	—	—	+2.9%	Open the original filing on SEC.gov
Jun 30, 2025	Knight Heather	Director	AGRANT	68.35	—	—	+11.2%	Open the original filing on SEC.gov
Jun 30, 2025	Jiang Wei	Director	AGRANT	68.35	—	—	+2.8%	Open the original filing on SEC.gov
Jun 24, 2025	Carpio Robert L III	SVP, Waters Division	FTAX	134	$346.80	$46.5K	-4.8%	Open the original filing on SEC.gov
May 12, 2025	Chaubal Amol	SVP & Chief Financial…	FTAX	239	$366.67	$87.6K	-4.4%	Open the original filing on SEC.gov

MEXER◆—

Kuebler Christopher A · DirectorAug 6

3,626 sh

SSELL$1.4M

Kuebler Christopher A · DirectorAug 6

3,626 sh @ $397.94 · -16.9% own

MEXER$494.7K

Kuebler Christopher A · DirectorAug 6

3,626 sh @ $136.43 · +20.4% own

AGRANT—

Knight Heather · DirectorJun 30

63.03 sh · +5.2% own

AGRANT—

Jiang Wei · DirectorJun 30

67.42 sh · +1.9% own

FTAX$69.8K

Carpio Robert L III · SVP Waters Analyti…Jun 24

189 sh @ $369.18 · -5.2% own

FTAX$84.2K

Chaubal Amol · SVP & Chief…May 12

239 sh @ $352.21 · -3.0% own

FTAX$91.8K

Bennett Jianqing · SVP Waters Adv.…Apr 6

302 sh @ $304.09 · -4.4% own

AGRANT—

Knight Heather · DirectorMar 31

68.44 sh · +6.0% own

AGRANT—

Jiang Wei · DirectorMar 31

64.06 sh · +1.9% own

PBUY★$144.7K

Jiang Wei · DirectorMar 16

500 sh @ $289.46 · +17.0% own

PBUY★$306.3K

Fearon Richard H · DirectorMar 6

1,000 sh @ $306.34 · +43.4% own

FTAX$217.8K

Chaubal Amol · SVP & Chief…Mar 2

709 sh @ $307.23 · -8.3% own

FTAX$126K

Bennett Jianqing · SVP Waters Adv.…Mar 2

410 sh @ $307.23 · -5.7% own

FTAX$1M

Batra Udit · President and CEOMar 2

3,417 sh @ $307.23 · -9.3% own

AGRANT◆—

Vergnano Mark · DirectorFeb 25

57 sh

AGRANT—

Vergnano Mark · DirectorFeb 25

23 sh · +0.5% own

AGRANT◆—

Ornskov Flemming · DirectorFeb 25

57 sh

AGRANT—

Ornskov Flemming · DirectorFeb 25

336 sh · +6.8% own

AGRANT◆—

Knight Heather · DirectorFeb 25

57 sh

AGRANT—

Knight Heather · DirectorFeb 25

23 sh · +2.0% own

AGRANT◆—

Kuebler Christopher A · DirectorFeb 25

57 sh

AGRANT—

Kuebler Christopher A · DirectorFeb 25

23 sh · +0.1% own

AGRANT◆—

Jiang Wei · DirectorFeb 25

57 sh

AGRANT—

Jiang Wei · DirectorFeb 25

23 sh · +0.8% own

AGRANT◆—

Huang Pearl S · DirectorFeb 25

57 sh

AGRANT—

Huang Pearl S · DirectorFeb 25

23 sh · +0.7% own

AGRANT◆—

Fraser Claire · DirectorFeb 25

877 sh

AGRANT—

Fraser Claire · DirectorFeb 25

358 sh · +273.3% own

AGRANT◆—

Fearon Richard H · DirectorFeb 25

57 sh

AGRANT—

Fearon Richard H · DirectorFeb 25

23 sh · +1.0% own

AGRANT◆—

Chaubal Amol · SVP & Chief…Feb 25

7,125 sh

AGRANT—

Chaubal Amol · SVP & Chief…Feb 25

1,455 sh · +20.6% own

AGRANT◆—

Carpio Robert L III · SVP Waters Analyti…Feb 25

4,884 sh

AGRANT—

Carpio Robert L III · SVP Waters Analyti…Feb 25

997 sh · +38.1% own

AGRANT◆—

Brennan Daniel J. · DirectorFeb 25

57 sh

AGRANT—

Brennan Daniel J. · DirectorFeb 25

23 sh · +1.7% own

AGRANT◆—

Bennett Jianqing · SVP Waters Adv.…Feb 25

4,826 sh

AGRANT—

Bennett Jianqing · SVP Waters Adv.…Feb 25

986 sh · +15.8% own

AGRANT◆—

Batra Udit · President and CEOFeb 25

25,283 sh

AGRANT—

Batra Udit · President and CEOFeb 25

5,165 sh · +16.4% own

AGRANT◆—

Baddour Linda · DirectorFeb 25

57 sh

AGRANT—

Baddour Linda · DirectorFeb 25

23 sh · +0.8% own

FTAX$21.9K

Chaubal Amol · SVP & Chief…Feb 5

58 sh @ $376.89 · -0.8% own

FTAX$14.3K

Carpio Robert L III · SVP, Waters…Feb 5

38 sh @ $376.89 · -1.4% own

FTAX$16.2K

Bennett Jianqing · SVP TA Instruments…Feb 5

43 sh @ $376.89 · -0.7% own

FTAX$82.2K

Batra Udit · President and CEOFeb 5

218 sh @ $376.89 · -0.7% own

AGRANT—

Chaubal Amol · SVP & Chief…Feb 4

1,884 sh · +36.1% own

AGRANT—

Bennett Jianqing · SVP TA Instruments…Feb 4

1,385 sh · +28.2% own

AGRANT—

Batra Udit · President and CEOFeb 4

7,066 sh · +28.8% own

AGRANT◆—

Vergnano Mark · DirectorJan 2

828 sh

AGRANT—

Vergnano Mark · DirectorJan 2

307 sh · +7.3% own

AGRANT◆—

Ornskov Flemming · DirectorJan 2

828 sh

AGRANT—

Ornskov Flemming · DirectorJan 2

307 sh · +6.6% own

AGRANT◆—

Knight Heather · DirectorJan 2

828 sh

AGRANT—

Knight Heather · DirectorJan 2

307 sh · +37.5% own

AGRANT◆—

Kuebler Christopher A · DirectorJan 2

828 sh

AGRANT—

Kuebler Christopher A · DirectorJan 2

307 sh · +1.8% own

AGRANT◆—

Jiang Wei · DirectorJan 2

828 sh

AGRANT—

Jiang Wei · DirectorJan 2

307 sh · +11.8% own

AGRANT◆—

Huang Pearl S · DirectorJan 2

828 sh

AGRANT—

Huang Pearl S · DirectorJan 2

307 sh · +10.4% own

AGRANT◆—

Fearon Richard H · DirectorJan 2

828 sh

AGRANT—

Fearon Richard H · DirectorJan 2

307 sh · +15.6% own

AGRANT◆—

Brennan Daniel J. · DirectorJan 2

828 sh

AGRANT—

Brennan Daniel J. · DirectorJan 2

307 sh · +29.9% own

AGRANT◆—

Baddour Linda · DirectorJan 2

828 sh

AGRANT—

Baddour Linda · DirectorJan 2

307 sh · +11.9% own

AGRANT—

Knight Heather · DirectorDec 31, 2025

59.79 sh · +7.9% own

AGRANT—

Jiang Wei · DirectorDec 31, 2025

59.79 sh · +2.3% own

MEXER◆—

Kuebler Christopher A · DirectorNov 5, 2025

3,761 sh

FTAX$490.3K

Kuebler Christopher A · DirectorNov 5, 2025

1,318 sh @ $371.97 · -7.0% own

MEXER$490.2K

Kuebler Christopher A · DirectorNov 5, 2025

3,761 sh @ $130.35 · +25.0% own

AGRANT—

Knight Heather · DirectorSep 30, 2025

77.88 sh · +11.4% own

AGRANT—

Jiang Wei · DirectorSep 30, 2025

72.91 sh · +2.9% own

AGRANT—

Knight Heather · DirectorJun 30, 2025

68.35 sh · +11.2% own

AGRANT—

Jiang Wei · DirectorJun 30, 2025

68.35 sh · +2.8% own

FTAX$46.5K

Carpio Robert L III · SVP, Waters…Jun 24, 2025

134 sh @ $346.80 · -4.8% own

FTAX$87.6K

Chaubal Amol · SVP & Chief…May 12, 2025

239 sh @ $366.67 · -4.4% own

Filing record

How quickly insiders here report their trades. Section 16 allows two business days from the transaction.

All 47 filings we hold were filed within the two-business-day deadline.

Counted in business days from the transaction date, or the deemed execution date where the filing reports one, excluding weekends and federal holidays. How this is measured · All late filings

Insiders at this company

Everyone who has filed a Form 4 for this issuer.

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