Brian Birchler sold $1.7M of Ionis Pharmaceuticals (IONS)

Executed Oct 14 2025, disclosed Oct 16 2025, 2 days later.

Value, as filed

$1.7M

23,900 sh across 2 lots

Executed

Oct 14 2025

the trade date, as filed

Disclosed

Oct 16 2025

2 days after the trade

Return, 21 sessionsiFrom the disclosed entry session; derived

–

purchases only

Returns are measured on stock purchases only.

The filer

BB Brian Birchler EVP, Corp and Development Ops profile →

Brian Birchler (EVP, Corp and Development Ops) filed 2 Form 4 reports in the trailing twelve months (0 purchases, 2 sales), most often in Ionis Pharmaceuticals, Inc. (IONS). The largest single filing was $637K of IONS (8,480 sh × $75.11, as filed), executed Jan 16.

The name

IONS Ionis Pharmaceuticals, Inc. IONS · Healthcare · 119 filings in 24 months ticker →

Healthcare · Ionis Pharmaceuticals, Inc., a commercial-stage biotechnology company, provides RNA-targeted medicines in the United States

More Healthcare filings→ Insider filings, newest first→ View the original filing at www.sec.gov→

Other filings by Brian Birchler in IONS

IONSSALE Ionis Pharmaceuticals, Inc. $513K
6,179 sh × $83.03
Exec Jan 30
Filed Feb 2 · 5:30 PM ET IONSSALE Ionis Pharmaceuticals, Inc. $637K
8,480 sh × $75.11
Exec Jan 16
Filed Jan 20 · 5:30 PM ET IONSSALE Ionis Pharmaceuticals, Inc. $609K
8,000 sh × $76.17
Exec Nov 6 2025
Filed Nov 7 2025 · 5:30 PM ET IONSSALE Ionis Pharmaceuticals, Inc. $177K
5,400 sh × $32.70
Exec Jan 16 2025
Filed Jan 17 2025 · 5:30 PM ET