Sanat Chattopadhyay

CIK: 0001670690

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)1 (5.9%)

Derivative conversions

Awards (A)15 (88.2%)

Compensation grants

Other (G, F, J, C, D, …)1 (5.9%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (2)

ASH

ASHLAND INC.

Director

MRK

Merck & Co., Inc.

Officer

Discretionary Trading P&L

Holdings

Transaction History (17 total)

ASH
ASHLAND INC.
Sep 30, 2026
Award(A)
Common Stock Units
Direct
212 shares at avg. $67.92-
ASH
ASHLAND INC.
Jun 30, 2026
Award(A)
Common Stock Units
Direct
218 shares at avg. $65.89-
MRK
Merck & Co., Inc.
Apr 29, 2026
Exercise(M)
Direct
2.6K shares at avg. $110.03$286K
MRK
Merck & Co., Inc.
Apr 29, 2026
Tax Payment(F)
Direct
1.1K shares at avg. $110.03$124K
ASH
ASHLAND INC.
Mar 31, 2026
Award(A)
Common Stock Units
Direct
258 shares at avg. $55.61-
MRK
Merck & Co., Inc.
Jan 26, 2026
Award(A)
Direct
13.9K shares at avg. $107.40$1.5M
ASH
ASHLAND INC.
Jan 20, 2026
Award(A)
Restricted Stock Units
Direct
2.4K shares at avg. $61.23-
ASH
ASHLAND INC.
Dec 31, 2025
Award(A)
Common Stock Units
Direct
245 shares at avg. $58.67-
ASH
ASHLAND INC.
Sep 30, 2025
Award(A)
Common Stock Units
Direct
300 shares at avg. $47.91-
ASH
ASHLAND INC.
Jun 30, 2025
Award(A)
Common Stock Units
Direct
286 shares at avg. $50.28-
MRK
Merck & Co., Inc.
Apr 29, 2025
Award(A)
Restricted Stock Unit
Direct
7.8K shares-
MRK
Merck & Co., Inc.
Apr 29, 2025
Award(A)
Stock Option (Right to Buy)
Direct
35.5K shares-
ASH
ASHLAND INC.
Mar 31, 2025
Award(A)
Common Stock Units
Direct
235 shares at avg. $59.29-
MRK
Merck & Co., Inc.
Jan 27, 2025
Award(A)
Direct
28.1K shares at avg. $97.94$2.8M
ASH
ASHLAND INC.
Jan 21, 2025
Award(A)
Restricted Stock Units
Direct
2.1K shares at avg. $73.16-
ASH
ASHLAND INC.
Dec 31, 2024
Award(A)
Common Stock Units
Direct
175 shares at avg. $71.46-
ASH
ASHLAND INC.
Sep 30, 2024
Award(A)
Common Stock Units
Direct
144 shares at avg. $86.97-

		Type	Shares	Price		Ownership
Sep 30, 2026	ASH ASHLAND INC.	Award(A) Common Stock Units	212	$67.92	-	Direct
Jun 30, 2026	ASH ASHLAND INC.	Award(A) Common Stock Units	218	$65.89	-	Direct
Apr 29, 2026	MRK Merck & Co., Inc.	Exercise(M)	2,597	$110.03	$285,748	Direct
Apr 29, 2026	MRK Merck & Co., Inc.	Tax Payment(F)	1,130	$110.03	$124,334	Direct
Mar 31, 2026	ASH ASHLAND INC.	Award(A) Common Stock Units	258	$55.61	-	Direct
Jan 26, 2026	MRK Merck & Co., Inc.	Award(A)	13,880	$107.40	$1,490,712	Direct
Jan 20, 2026	ASH ASHLAND INC.	Award(A) Restricted Stock Units	2,449	$61.23	-	Direct
Dec 31, 2025	ASH ASHLAND INC.	Award(A) Common Stock Units	245	$58.67	-	Direct
Sep 30, 2025	ASH ASHLAND INC.	Award(A) Common Stock Units	300	$47.91	-	Direct
Jun 30, 2025	ASH ASHLAND INC.	Award(A) Common Stock Units	286	$50.28	-	Direct
Apr 29, 2025	MRK Merck & Co., Inc.	Award(A) Restricted Stock Unit	7,791	-	-	Direct
Apr 29, 2025	MRK Merck & Co., Inc.	Award(A) Stock Option (Right to Buy)	35,465	-	-	Direct
Mar 31, 2025	ASH ASHLAND INC.	Award(A) Common Stock Units	235	$59.29	-	Direct
Jan 27, 2025	MRK Merck & Co., Inc.	Award(A)	28,136	$97.94	$2,755,640	Direct
Jan 21, 2025	ASH ASHLAND INC.	Award(A) Restricted Stock Units	2,050	$73.16	-	Direct
Dec 31, 2024	ASH ASHLAND INC.	Award(A) Common Stock Units	175	$71.46	-	Direct
Sep 30, 2024	ASH ASHLAND INC.	Award(A) Common Stock Units	144	$86.97	-	Direct

1-17 of 17 transactions

About Chattopadhyay Sanat

Chattopadhyay Sanat (SEC CIK 0001670690) files insider reports with the SEC as Director of ASHLAND INC. (ASH) and Exe V-P & Pres. MMD of Merck & Co., Inc. (MRK).

Signal8 holds 15 ownership filings by Chattopadhyay Sanat, all Form 4s, filed between Oct 2, 2024 and Oct 1, 2026. Those filings report 17 transactions, from Sep 30, 2024 to Sep 30, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Chattopadhyay Sanat's filings is in WILMNGTON, DE.

Recent filings by Chattopadhyay Sanat

Sep 30, 2026: Grant or award of ASH derivative securities (Form 4, code A).
Jun 30, 2026: Grant or award of ASH derivative securities (Form 4, code A).
Apr 29, 2026: Option exercise of MRK shares (Form 4, code M).
Apr 29, 2026: Tax withholding of MRK shares (Form 4, code F).
Mar 31, 2026: Grant or award of ASH derivative securities (Form 4, code A).

Other insiders filing for ASHLAND INC. (ASH)

Bishop Steven D, Director
MUSA OSAMA M, SVP and CTO
LAMPKIN ROBIN E., SVP, GC & Secretary
Thomas Peter T, Director
SPIZZO ALLEN A, Director
Assis Alessandra Faccin, SVP and GM, Life Sciences

How to read Form 4 transaction codes