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IONSIonis Pharmaceuticals Inc

Brian Birchler

EVP, Corp and Development Ops at Ionis Pharmaceuticals Inc, as of Sep 2, 2026Sold $1.8M of stock in the past 12 months: 33% under a disclosed plan, 39% to cover taxes and 28% with no plan disclosed.

Updated Oct 15, 2026 from SEC filings · covers Oct 16, 2025 to Oct 15, 2026
24K
shares sold, past 12 months
4
days with sales
$637K
largest single day, Jan 16, 2026
1
company filed for

Share of stake sold and shares held at Ionis Pharmaceuticals Inc are not shown: the holdings do not reconcile with the filings. Why

Selling by month

Oct 2025 to Oct 2026. Each sale is counted once: under a disclosed plan, else to cover taxes, else no plan disclosed.

Disclosed planTo cover taxesNo plan disclosedOne dollar scale for every month; the tallest bar is labeled
OctNov 2025: $609K under a disclosed planNovDecJan 2026: $637K to cover taxesJan 2026: $513K no plan disclosed$1.1MJanFebMarApr 2026: $73K to cover taxesAprMayJunJulAugSepOct

Pattern

What the filings show, past 12 months. Nothing here rates or predicts.

Roles from filings

Every company we track where this person has filed, newest filing first.

CompanyTitleFirst filingLatest filing
Ionis Pharmaceuticals Inc (IONS)EVP, Corp and Development OpsMar 24, 2023Sep 2, 2026

Recent filings

The last 5 days with transactions, newest first, one line per trade date. Each number links to an SEC filing.

This page shows only what this person reported on SEC ownership filings. See the methodology. Spotted something wrong? Report an error.