Welch & Forbes LLC

Position in TMO — Thermo Fisher Scientific Inc.

CIK 105495 Boston, MA

Position in TMO

as of Mar 31, 2026 · filed May 1, 2026 Compact

Position Value

$43,713,729

-$7,905,994 QoQ

Shares Held

88,934

-0.2% QoQ

Ownership

0.024%

of shares outstanding

% of Portfolio

0.62%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 61.782895180695796.ToString("F0")% Shared 0.ToString("F0")% None 38.217104819304204.ToString("F0")%

Healthcare · as of Mar 31, 2026

Welch & Forbes LLC holds $331,978,026 across 7 Diagnostics & Research names. TMO ranks #4 (13.2% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	DHR	Danaher Corp /De/	612,657	$116,159,767
2	IDXX	Idexx Laboratories Inc /De	168,181	$94,499,222
3	MTD	Mettler Toledo International Inc/	58,807	$74,167,388
4	TMO	Thermo Fisher Scientific Inc. This page	88,934	$43,713,729
5	WAT	Waters Corp /De/	7,601	$2,263,577
6	ICLR	Icon PLC	8,605	$952,229
7	ILMN	Illumina, Inc.	1,802	$222,114

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$43,713,729	88,934	-0.2%	Shares	Sole	2026-05-01
2025-12-31	$51,619,723	89,084	-0.7%	Shares	Sole	2026-02-10
2025-09-30	$43,518,904	89,726	-1.5%	Shares	Sole	2025-11-04
2025-06-30	$36,943,082	91,114	-0.7%	Shares	Sole	2025-08-05
2025-03-31	$45,664,254	91,769	+0.8%	Shares	Sole	2025-05-02
2024-12-31	$47,357,057	91,031	-3.4%	Shares	Sole	2025-02-07
2024-09-30	$58,316,923	94,277	+0.4%	Shares	Sole	2024-11-04
2024-06-30	$51,922,829	93,893	+0.0%	Shares	Sole	2024-08-02
2024-03-31	$54,557,020	93,868	+7.1%	Shares	Sole	2024-05-03
2023-12-31	$46,516,843	87,637	+0.1%	Shares	Sole	2024-02-06
2023-09-30	$44,325,813	87,571	+4.3%	Shares	Sole	2023-11-03
2023-06-30	$43,819,173	83,985	+2.0%	Shares	Sole	2023-07-28
2023-03-31	$47,460,034	82,343	+1.6%	Shares	Sole	2023-04-14
2022-12-31	$44,643,887	81,069	-0.4%	Shares	Sole	2023-02-02
2022-09-30	$41,273,093	81,376	+0.9%	Shares	Sole	2022-10-31
2022-06-30	$43,798,147	80,618	+2.7%	Shares	Other	2022-07-22
2022-03-31	$46,377,247	78,519	+3.1%	Shares	Sole	2022-04-25
2021-12-31	$50,794,979	76,127	+0.4%	Shares	Other	2022-01-19
2021-09-30	$43,321,097	75,825	+3.7%	Shares	Sole	2021-10-13
2021-06-30	$36,897,440	73,141	+4.6%	Shares	Sole	2021-07-22
2021-03-31	$31,915,109	69,931	+3.0%	Shares	Other	2021-04-14
2020-12-31	$31,637,174	67,923	+0.7%	Shares	Other	2021-01-20
2020-09-30	$29,776,550	67,441	+2.0%	Shares	Sole	2020-10-23
2020-06-30	$23,948,499	66,094	+5.2%	Shares	Sole	2020-07-15
2020-03-31	$17,810,080	62,800	—	Shares	Sole	2020-04-17
No filing history on record for this holder in this stock.