On the Record · Ionis Pharmaceuticals

Ionis Pharmaceuticals acquisitions, on the record

The businesses Ionis Pharmaceuticals bought and sold, as its annual reports describe them, with the cash it reported paying for acquisitions each year and every deal filing since 2016.

Deals its annual reports describe

Business	Deal	When	Value
Akcea Therapeutics, Inc. Word for word“As a result of our merger with Akcea Therapeutics, Inc. in 2020, or the Akcea Merger, we are subject to the separate return limitation year, or SRLY, rules.” 10-K for 2023	merger	in 2020	—

Deal filings since 2016

2025-11-17 Form 8-K, Item 1.01: Entry into a Material Definitive Agreement
2025-11-03 Form 8-K, Item 1.01: Entry into a Material Definitive Agreement
2025-03-12 Form 8-K, Item 1.01: Entry into a Material Definitive Agreement
2024-06-18 Form 8-K, Item 1.01: Entry into a Material Definitive Agreement
2024-02-29 Form 8-K, Item 1.01: Entry into a Material Definitive Agreement
2023-12-18 Form 8-K, Item 1.01: Entry into a Material Definitive Agreement
2023-09-27 Form 8-K, Item 1.01: Entry into a Material Definitive Agreement
2023-08-03 Form 8-K, Item 1.01: Entry into a Material Definitive Agreement
2023-06-12 Form 8-K, Item 1.01: Entry into a Material Definitive Agreement
2023-01-09 Form 8-K, Item 1.01: Entry into a Material Definitive Agreement
2022-11-14 Form 8-K, Item 1.01: Entry into a Material Definitive Agreement
2022-10-24 Form 8-K, Item 1.01: Entry into a Material Definitive Agreement
2022-10-24 Form 8-K, Item 2.01: Completion of Acquisition or Disposition of Assets
2022-10-12 Form 8-K, Item 1.01: Entry into a Material Definitive Agreement
2022-07-11 Form 8-K, Item 1.01: Entry into a Material Definitive Agreement
2021-12-07 Form 8-K, Item 1.01: Entry into a Material Definitive Agreement
2021-04-13 Form 8-K, Item 1.01: Entry into a Material Definitive Agreement
2020-12-18 Form 8-K, Item 1.01: Entry into a Material Definitive Agreement
2020-10-13 Form 8-K, Item 2.01: Completion of Acquisition or Disposition of Assets
2020-08-31 Form 8-K, Item 1.01: Entry into a Material Definitive Agreement
2020-01-17 Form 8-K, Item 1.01: Entry into a Material Definitive Agreement
2020-01-10 Form 8-K, Item 1.01: Entry into a Material Definitive Agreement
2019-12-23 Form 8-K, Item 1.01: Entry into a Material Definitive Agreement
2018-10-10 Form 8-K, Item 1.01: Entry into a Material Definitive Agreement
2018-04-24 Form 8-K, Item 1.01: Entry into a Material Definitive Agreement
2018-03-16 Form 8-K, Item 1.01: Entry into a Material Definitive Agreement
2017-07-21 Form 8-K, Item 1.01: Entry into a Material Definitive Agreement
2017-06-22 Form 8-K, Item 1.01: Entry into a Material Definitive Agreement
2017-02-16 Form 8-K, Item 1.01: Entry into a Material Definitive Agreement
2017-01-09 Form 8-K, Item 1.01: Entry into a Material Definitive Agreement
2016-01-05 Form 8-K, Item 1.01: Entry into a Material Definitive Agreement

Read from Ionis Pharmaceuticals’s annual reports (10-K for 2025, 10-K for 2024, 10-K for 2023) and the financial data it files with the SEC, as of 2026-02-26. Every quotation is word for word from the filing linked beside it; how these pages are built and checked. The full record is in its company data sheet.