David Joseph Gaffin

CIK: 0001675905

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)10 (27.8%)

Position reduction

Option Exercises (M)9 (25.0%)

Derivative conversions

Awards (A)6 (16.7%)

Compensation grants

Other (G, F, J, C, D, …)11 (30.6%)

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

Companies & Roles (1)

ALKS

Alkermes plc.

Officer

Discretionary Trading P&L

Holdings

Transaction History (36 total)

ALKS
Alkermes plc.
Nov 3, 2026
Sale(S)
Direct
2K shares at avg. $46.17$94K
ALKS
Alkermes plc.
Oct 2, 2026
Sale(S)
Direct
2K shares at avg. $41.03$83K
ALKS
Alkermes plc.
Sep 3, 2026
Sale(S)
Direct
2K shares at avg. $48.01$98K
ALKS
Alkermes plc.
Aug 3, 2026
Sale(S)
Direct
2K shares at avg. $48.58$99K
ALKS
Alkermes plc.
Jul 6, 2026
Sale(S)
Direct
2K shares at avg. $54.03$110K
ALKS
Alkermes plc.
Jun 4, 2026
Sale(S)
Direct
2K shares at avg. $43.05$88K
ALKS
Alkermes plc.
May 4, 2026
Sale(S)
Direct
2K shares at avg. $33.20$68K
ALKS
Alkermes plc.
Apr 6, 2026
Sale(S)
Direct
2K shares at avg. $34.57$70K
ALKS
Alkermes plc.
Mar 3, 2026
Sale(S)
Direct
2K shares at avg. $29.76$61K
ALKS
Alkermes plc.
Mar 2, 2026
Award(A)
Employee Stock Option (Right to Buy)
Direct
78.3K shares-
ALKS
Alkermes plc.
Mar 2, 2026
Award(A)
Restricted Stock Unit Award
Direct
36.4K shares-
ALKS
Alkermes plc.
Mar 2, 2026
Sale(S)
Direct
2K shares at avg. $29.29$60K
ALKS
Alkermes plc.
Feb 26, 2026
Exercise(M)
Direct
6.9K shares-
ALKS
Alkermes plc.
Feb 26, 2026
Tax Payment(F)
Direct
3K shares at avg. $30.73$94K
ALKS
Alkermes plc.
Feb 23, 2026
Tax Payment(F)
Direct
3.4K shares at avg. $32.19$110K
ALKS
Alkermes plc.
Feb 23, 2026
Exercise(M)
Direct
7.7K shares-
ALKS
Alkermes plc.
Feb 19, 2026
Tax Payment(F)
Direct
3.4K shares at avg. $32.00$109K
ALKS
Alkermes plc.
Feb 19, 2026
Exercise(M)
Direct
7.7K shares-
ALKS
Alkermes plc.
Feb 18, 2026
Tax Payment(F)
Direct
2.1K shares at avg. $32.02$68K
ALKS
Alkermes plc.
Feb 18, 2026
Exercise(M)
Direct
6.4K shares-
ALKS
Alkermes plc.
Feb 5, 2026
Tax Payment(F)
Direct
7.6K shares at avg. $33.55$256K
ALKS
Alkermes plc.
Feb 5, 2026
Award(A)
Direct
25.4K shares-
ALKS
Alkermes plc.
Aug 3, 2025
Exercise(M)
Direct
2K shares-
ALKS
Alkermes plc.
Aug 3, 2025
Tax Payment(F)
Direct
895 shares at avg. $26.55$24K
ALKS
Alkermes plc.
Feb 26, 2025
Exercise(M)
Direct
6.9K shares-

		Type	Shares	Price		Ownership
Nov 3, 2026	ALKS Alkermes plc.	Sale(S)	2,035	$46.17	$93,956	Direct
Oct 2, 2026	ALKS Alkermes plc.	Sale(S)	2,034	$41.03	$83,455	Direct
Sep 3, 2026	ALKS Alkermes plc.	Sale(S)	2,034	$48.01	$97,652	Direct
Aug 3, 2026	ALKS Alkermes plc.	Sale(S)	2,034	$48.58	$98,812	Direct
Jul 6, 2026	ALKS Alkermes plc.	Sale(S)	2,034	$54.03	$109,897	Direct
Jun 4, 2026	ALKS Alkermes plc.	Sale(S)	2,034	$43.05	$87,564	Direct
May 4, 2026	ALKS Alkermes plc.	Sale(S)	2,034	$33.20	$67,529	Direct
Apr 6, 2026	ALKS Alkermes plc.	Sale(S)	2,034	$34.57	$70,315	Direct
Mar 3, 2026	ALKS Alkermes plc.	Sale(S)	2,034	$29.76	$60,532	Direct
Mar 2, 2026	ALKS Alkermes plc.	Award(A) Employee Stock Option (Right to Buy)	78,292	-	-	Direct
Mar 2, 2026	ALKS Alkermes plc.	Award(A) Restricted Stock Unit Award	36,364	-	-	Direct
Mar 2, 2026	ALKS Alkermes plc.	Sale(S)	2,034	$29.29	$59,576	Direct
Feb 26, 2026	ALKS Alkermes plc.	Exercise(M)	6,866	-	$0	Direct
Feb 26, 2026	ALKS Alkermes plc.	Tax Payment(F)	3,049	$30.73	$93,696	Direct
Feb 23, 2026	ALKS Alkermes plc.	Tax Payment(F)	3,414	$32.19	$109,897	Direct
Feb 23, 2026	ALKS Alkermes plc.	Exercise(M)	7,689	-	$0	Direct
Feb 19, 2026	ALKS Alkermes plc.	Tax Payment(F)	3,407	$32.00	$109,024	Direct
Feb 19, 2026	ALKS Alkermes plc.	Exercise(M)	7,673	-	$0	Direct
Feb 18, 2026	ALKS Alkermes plc.	Tax Payment(F)	2,126	$32.02	$68,075	Direct
Feb 18, 2026	ALKS Alkermes plc.	Exercise(M)	6,355	-	$0	Direct
Feb 5, 2026	ALKS Alkermes plc.	Tax Payment(F)	7,619	$33.55	$255,617	Direct
Feb 5, 2026	ALKS Alkermes plc.	Award(A)	25,352	-	$0	Direct
Aug 3, 2025	ALKS Alkermes plc.	Exercise(M)	2,014	-	-	Direct
Aug 3, 2025	ALKS Alkermes plc.	Tax Payment(F)	895	$26.55	$23,762	Direct
Feb 26, 2025	ALKS Alkermes plc.	Exercise(M)	6,866	-	-	Direct

1-25 of 36 transactions

About Gaffin David Joseph

Gaffin David Joseph (SEC CIK 0001675905) files insider reports with the SEC as EVP, CLO, Alkermes, Inc. of Alkermes plc. (ALKS).

Signal8 holds 18 ownership filings by Gaffin David Joseph, all Form 4s, filed between Feb 7, 2025 and Nov 3, 2026. Those filings report 36 transactions, from Feb 6, 2025 to Nov 3, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Gaffin David Joseph's filings is in WALTHAM, MA.

Recent filings by Gaffin David Joseph

Nov 3, 2026: Open-market sale of ALKS shares (Form 4, code S).
Oct 2, 2026: Open-market sale of ALKS shares (Form 4, code S).
Sep 3, 2026: Open-market sale of ALKS shares (Form 4, code S).
Aug 3, 2026: Open-market sale of ALKS shares (Form 4, code S).
Jul 6, 2026: Open-market sale of ALKS shares (Form 4, code S).

Other insiders filing for Alkermes plc. (ALKS)

Reed Joshua, SVP, Chief Financial Officer
Whitaker Anne Clem, Director
Hopkinson Craig C., EVP R&D, Chief Medical Officer
Nichols Christian Todd, SVP, Chief Commercial Officer
Jackson Blair Curtis, President & CEO, Alkermes plc
snyderman nancy lynn MD, Director

How to read Form 4 transaction codes