DF DENT & CO INC

Position in RGEN — Repligen Corp

CIK 934999 BALTIMORE, MD

Position in RGEN

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$43,017,849

-$38,182,974 QoQ

Shares Held

365,115

-26.3% QoQ

Ownership

0.647%

of shares outstanding

% of Portfolio

0.90%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Healthcare · as of Mar 31, 2026

DF DENT & CO INC holds $229,602,112 across 6 Medical Instruments & Supplies names. RGEN ranks #2 (18.7% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ISRG	Intuitive Surgical Inc	275,313	$126,916,539
2	RGEN	Repligen Corp This page	365,115	$43,017,849
3	WST	West Pharmaceutical Services Inc	120,597	$30,226,432
4	LMAT	Lemaitre Vascular Inc	165,341	$18,050,276
5	WRBY	Warby Parker Inc.	528,128	$11,127,656
6	BDX	Becton Dickinson & Co	1,675	$263,360

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$43,017,849	365,115	-26.3%	Shares	Sole	2026-05-15
2025-12-31	$81,200,823	495,550	-7.3%	Shares	Sole	2026-02-17
2025-09-30	$71,475,888	534,719	-8.8%	Shares	Sole	2025-11-14
2025-06-30	$72,945,511	586,473	+2.1%	Shares	Sole	2025-08-14
2025-03-31	$73,121,774	574,676	+2.0%	Shares	Sole	2025-05-15
2024-12-31	$81,078,523	563,280	-4.6%	Shares	Sole	2025-02-12
2024-09-30	$87,851,571	590,321	+31.0%	Shares	Sole	2024-11-15
2024-06-30	$56,815,998	450,706	+2.5%	Shares	Sole	2024-08-14
2024-03-31	$80,902,361	439,878	-9.6%	Shares	Sole	2024-05-15
2023-12-31	$87,446,269	486,353	+27.5%	Shares	Sole	2024-02-14
2023-09-30	$60,661,201	381,493	-0.9%	Shares	Sole	2023-11-14
2023-06-30	$54,472,850	385,076	+337.5%	Shares	Sole	2023-08-14
2023-03-31	$14,817,700	88,012	+8.8%	Shares	Sole	2023-05-15
2022-12-31	$13,698,702	80,909	-3.4%	Shares	Sole	2023-02-15
2022-09-30	$15,665,410	83,723	-13.8%	Shares	Sole	2022-11-14
2022-06-30	$15,765,629	97,079	+8.6%	Shares	Sole	2022-08-15
2022-03-31	$16,809,227	89,368	+45.8%	Shares	Sole	2022-05-16
2021-12-31	$16,237,075	61,309	-0.8%	Shares	Sole	2022-02-14
2021-09-30	$17,859,870	61,801	+7.1%	Shares	Sole	2021-11-15
2021-06-30	$11,523,264	57,726	+6.9%	Shares	Sole	2021-08-16
2021-03-31	$10,502,611	54,023	+8.1%	Shares	Sole	2021-05-17
2020-12-31	$9,574,792	49,965	+9.5%	Shares	Sole	2021-02-16
2020-09-30	$6,729,594	45,612	+3.0%	Shares	Sole	2020-11-16
2020-06-30	$5,475,923	44,300	+59.1%	Shares	Sole	2020-08-14
2020-03-31	$2,688,445	27,848	—	Shares	Sole	2020-05-15
No filing history on record for this holder in this stock.