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Who

Spencer R. Berthelsen

Director

Company insider

Files Form 4 as: Director, Ionis Pharmaceuticals.

Every Form 4 they filed

In numbers

Trades disclosed
182
Buys
0
Sells
10
Bought
$0
Sold
$6.4M
Companies
1
Companies where not an officer
1
First trade
3 Jul 2006
Last trade
15 Jul 2026
Last filed
17 Jul 2026

Companies traded

Everywhere else they filed: board seats, 10% stakes, other companies
IONS Ionis PharmaceuticalsDirector · Biotechnology · last 15 Jul 20260 buys · 10 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
20Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
15 Jul 2026filed 17 Jul 2026IONS Ionis PharmaceuticalsBiotechnologySEC FORM 4 Code M—5,220 at $0.00filing
15 Jul 2026filed 17 Jul 2026IONS Ionis Pharmaceuticalsoption or derivative · BiotechnologySEC FORM 4 Code M—5,220 at $0.00filing
15 Jul 2026filed 17 Jul 2026IONS Ionis Pharmaceuticalsoption or derivative · BiotechnologySEC FORM 4 Code M—5,220 at $0.00filing
15 Jul 2026filed 17 Jul 2026IONS Ionis PharmaceuticalsBiotechnologySEC FORM 4 Code M—5,220 at $0.00filing
1 Jul 2026filed 6 Jul 2026IONS Ionis Pharmaceuticalsoption or derivative · BiotechnologySEC FORM 4 Code A—5,369 at $0.00filing
1 Jul 2026filed 6 Jul 2026IONS Ionis Pharmaceuticalsoption or derivative · BiotechnologySEC FORM 4 Code A—2,301 at $0.00filing
1 Jul 2026filed 6 Jul 2026IONS Ionis Pharmaceuticalsoption or derivative · BiotechnologySEC FORM 4 Code A—5,369 at $0.00filing
1 Jul 2026filed 6 Jul 2026IONS Ionis Pharmaceuticalsoption or derivative · BiotechnologySEC FORM 4 Code A—2,301 at $0.00filing
15 Jun 2026filed 16 Jun 2026IONS Ionis PharmaceuticalsBiotechnologySEC FORM 4 Code M$195K8,000 at $24.42filing
15 Jun 2026filed 16 Jun 2026IONS Ionis PharmaceuticalsBiotechnologySEC FORM 4 Sold$588K8,000 at $73.49filing
15 Jun 2026filed 16 Jun 2026IONS Ionis Pharmaceuticalsoption or derivative · BiotechnologySEC FORM 4 Code M—8,000 at $0.00filing
15 Jun 2026filed 16 Jun 2026IONS Ionis Pharmaceuticalsoption or derivative · BiotechnologySEC FORM 4 Code M—8,000 at $0.00filing
15 Jun 2026filed 16 Jun 2026IONS Ionis PharmaceuticalsBiotechnologySEC FORM 4 Code M$195K8,000 at $24.42filing
15 Jun 2026filed 16 Jun 2026IONS Ionis PharmaceuticalsBiotechnologySEC FORM 4 Sold$588K8,000 at $73.49filing
1 Jun 2026filed 3 Jun 2026IONS Ionis PharmaceuticalsBiotechnologySEC FORM 4 Code M$195K8,000 at $24.42filing
1 Jun 2026filed 3 Jun 2026IONS Ionis PharmaceuticalsBiotechnologySEC FORM 4 Sold$605K8,000 at $75.67filing
1 Jun 2026filed 3 Jun 2026IONS Ionis Pharmaceuticalsoption or derivative · BiotechnologySEC FORM 4 Code M—8,000 at $0.00filing
1 Jun 2026filed 3 Jun 2026IONS Ionis Pharmaceuticalsoption or derivative · BiotechnologySEC FORM 4 Code M—8,000 at $0.00filing
1 Jun 2026filed 3 Jun 2026IONS Ionis PharmaceuticalsBiotechnologySEC FORM 4 Code M$195K8,000 at $24.42filing
1 Jun 2026filed 3 Jun 2026IONS Ionis PharmaceuticalsBiotechnologySEC FORM 4 Sold$605K8,000 at $75.67filing

Sectors

Health Care10

Buys in green, sells in red, by the company’s sector.

Related people

Shannon L. DeversEVP, Chief Human Resources Ofc · EVP, Chief Human Resources Ofc at Ionis Pharmaceuticals, filing Form 4 there in the last year
Eric SwayzeEVP Research · EVP Research at Ionis Pharmaceuticals, filing Form 4 there in the last year
Brett P. MoniaChief Executive Officer · Chief Executive Officer at Ionis Pharmaceuticals, filing Form 4 there in the last year
Brian BirchlerEVP, Corp and Development Ops · EVP, Corp and Development Ops at Ionis Pharmaceuticals, filing Form 4 there in the last year
Patrick R. O'NeilEVP CLO & General Counsel · EVP CLO & General Counsel at Ionis Pharmaceuticals, filing Form 4 there in the last year
Michael R. HaydenDirector · Also traded IONS in the last 90 days