BERKSHIRE ASSET MANAGEMENT LLC/PA

Position in IONS — Ionis Pharmaceuticals Inc

CIK 949012 WILKES BARRE, PA

Position in IONS

as of Mar 31, 2026 · filed May 11, 2026 Compact

Position Value

$273,102

-$14,067 QoQ

Shares Held

3,637

+0.2% QoQ

Ownership

0.002%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

13 quarters on record

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

Healthcare · as of Mar 31, 2026

BERKSHIRE ASSET MANAGEMENT LLC/PA holds $1,789,429 across 3 Biotechnology names. IONS ranks #2 (15.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	VRTX	Vertex Pharmaceuticals Inc / Ma	3,152	$1,407,494
2	IONS	Ionis Pharmaceuticals Inc This page	3,637	$273,102
3	ACOG	Alpha Cognition Inc.	19,824	$108,833

13 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$273,102	3,637	+0.2%	Shares	Sole	2026-05-11
2025-12-31	$287,169	3,630	+0.4%	Shares	Sole	2026-02-17
2025-09-30	$236,427	3,614	-13.5%	Shares	Sole	2025-11-07
2023-12-31	$211,466	4,180	-25.3%	Shares	Sole	2024-02-09
2022-06-30	$207,163	5,596	-42.5%	Shares	Sole	2022-08-12
2022-03-31	$360,732	9,739	+5.4%	Shares	Sole	2022-05-16
2021-12-31	$281,142	9,239	-29.3%	Shares	Sole	2022-02-14
2021-09-30	$438,032	13,060	+14.6%	Shares	Sole	2021-11-15
2021-06-30	$454,706	11,399	-7.7%	Shares	Sole	2021-08-16
2021-03-31	$555,166	12,348	0.0%	Shares	Sole	2021-05-17
2020-12-31	$698,155	12,348	+209.8%	Shares	Sole	2021-02-16
2020-06-30	$235,014	3,986	-65.4%	Shares	Sole	2020-08-12
2020-03-31	$544,476	11,516	—	Shares	Sole	2020-05-13
No filing history on record for this holder in this stock.