GRANDFIELD & DODD, LLC

Position in VRTX — Vertex Pharmaceuticals Inc / Ma

CIK 1308016 NEW YORK, NY

Position in VRTX

as of Mar 31, 2026 · filed May 7, 2026 Compact

Position Value

$9,691,704

+$66,418 QoQ

Shares Held

21,704

+2.2% QoQ

Ownership

0.009%

of shares outstanding

% of Portfolio

0.56%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 96.79321784002948.ToString("F0")% Shared 0.ToString("F0")% None 3.2067821599705124.ToString("F0")%

Healthcare · as of Mar 31, 2026

GRANDFIELD & DODD, LLC holds $47,624,275 across 12 Biotechnology names. VRTX ranks #2 (20.4% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	REGN	Regeneron Pharmaceuticals, Inc.	36,415	$28,135,685
2	VRTX	Vertex Pharmaceuticals Inc / Ma This page	21,704	$9,691,704
3	IONS	Ionis Pharmaceuticals Inc	37,326	$2,802,809
4	INCY	Incyte Corp	20,885	$1,965,696
5	EXEL	Exelixis, Inc.	26,439	$1,133,968
6	ALNY	Alnylam Pharmaceuticals, Inc.	3,081	$1,019,410
7	BMRN	Biomarin Pharmaceutical Inc	17,861	$1,008,967
8	GMAB	Genmab A/S	37,163	$997,083

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$9,691,704	21,704	+2.2%	Shares	Sole	2026-05-07
2025-12-31	$9,625,286	21,231	+7.1%	Shares	Sole	2026-02-10
2025-09-30	$7,762,304	19,820	+8.4%	Shares	Sole	2025-10-30
2025-06-30	$8,141,372	18,287	+0.8%	Shares	Sole	2025-08-08
2025-03-31	$8,797,543	18,146	+7.0%	Shares	Sole	2025-05-02
2024-12-31	$6,831,402	16,964	+19.9%	Shares	Sole	2025-02-06
2024-09-30	$6,578,091	14,144	+21.9%	Shares	Sole	2024-11-08
2024-06-30	$5,439,964	11,606	+27.3%	Shares	Sole	2024-08-09
2024-03-31	$3,810,161	9,115	+1.4%	Shares	Sole	2024-05-06
2023-12-31	$3,656,313	8,986	+0.8%	Shares	Sole	2024-01-31
2023-09-30	$3,098,711	8,911	-1.2%	Shares	Sole	2023-10-26
2023-06-30	$3,173,524	9,018	+0.3%	Shares	Sole	2023-08-08
2023-03-31	$2,831,849	8,988	+1.7%	Shares	Sole	2023-04-28
2022-12-31	$2,551,948	8,837	+2.7%	Shares	Sole	2023-01-20
2022-09-30	$2,490,912	8,603	0.0%	Shares	Sole	2022-11-04
2022-06-30	$2,424,239	8,603	+0.2%	Shares	Sole	2022-08-01
2022-03-31	$2,241,732	8,590	+1.8%	Shares	Sole	2022-04-19
2021-12-31	$1,853,424	8,440	+6.6%	Shares	Sole	2022-02-08
2021-09-30	$1,436,790	7,921	-0.1%	Shares	Sole	2021-10-28
2021-06-30	$1,599,329	7,932	+0.9%	Shares	Sole	2021-07-28
2021-03-31	$1,689,465	7,862	+0.2%	Shares	Sole	2021-04-22
2020-12-31	$1,853,614	7,843	+2.9%	Shares	Sole	2021-01-29
2020-09-30	$2,074,098	7,622	+0.5%	Shares	Sole	2020-11-03
2020-06-30	$2,201,711	7,584	+1.9%	Shares	Sole	2020-07-24
2020-03-31	$1,770,110	7,439	—	Shares	Sole	2020-05-14
No filing history on record for this holder in this stock.