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IONS

Ionis Pharmaceuticals, Inc.

NASDAQ · USHealthcareBiotechnology
$54.15-0.44%

Price as of Jul 20, 2026

IONS ownership

Ionis Pharmaceuticals, Inc. ownership & insider activity

Latest available institutional positioning and SEC Form 4 insider transactions, coalesced at the company entity level when listings share coverage.

Insider Activity

Sentiment
0/100
Buys (3m)
0
Sells (3m)
29
Net (3m)
-$27.9M
Insider trades by month Buys Sells
Feb
Mar
Apr
May
Jun
Jul
Context3-month price -22.3%Institutions accumulating (13F)
DateInsiderTypeSharesPrice
Jul 9, 2026Diaz Allene M.directorOption10,111$47.11
Jul 9, 2026BENNETT C FRANKofficer: EVP, Chief Scientific OfficerSell5,536$83.58
Jul 9, 2026Kordasiewicz Holly B.officer: EVP, Chief Development OfficerSell362$84.30
Jul 9, 2026BENNETT C FRANKofficer: EVP, Chief Scientific OfficerSell15,000$85.46
Jul 9, 2026Diaz Allene M.directorSell10,111$85.42
Jul 6, 2026KLEIN JOSEPH IIIdirectorSell99$79.45
Jul 6, 2026LOSCALZO JOSEPHdirectorGrant2,301—
Jul 6, 2026BERTHELSEN SPENCER RdirectorGrant5,369$79.19
Jul 6, 2026KLEIN JOSEPH IIIdirectorGrant2,301—
Jul 6, 2026YANG MICHAEL J.directorGrant5,369$79.19
Jul 6, 2026HERMAN JOAN EdirectorGrant5,369$79.19
Jul 6, 2026Diaz Allene M.directorGrant2,301—
Jul 6, 2026KLEIN JOSEPH IIIdirectorGrant5,369$79.19
Jul 6, 2026KLEIN JOSEPH IIIdirectorOption11,518$39.94
Jul 6, 2026HERMAN JOAN EdirectorGrant2,301—
Jul 6, 2026Hayden Michael RdirectorGrant5,369$79.19
Jul 6, 2026YANG MICHAEL J.directorGrant2,301—
Jul 6, 2026BERTHELSEN SPENCER RdirectorGrant2,301—
Jul 6, 2026Hayden Michael RdirectorGrant2,301—
Jul 6, 2026Diaz Allene M.directorGrant5,369$79.19
Jul 6, 2026LOSCALZO JOSEPHdirectorGrant5,369$79.19
Jul 6, 2026KLEIN JOSEPH IIIdirectorSell11,419$79.04
Jun 30, 2026Schneider Eugeneofficer: EVP, Chf Clinical Develop OfcrOption26,000$60.89
Jun 30, 2026Baroldi Josephofficer: EVP, Chief Business OfficerOption3,866$56.78
Jun 30, 2026Baroldi Josephofficer: EVP, Chief Business OfficerOption1,769$32.60
Jun 30, 2026Baroldi Josephofficer: EVP, Chief Business OfficerSell5,635$80.16
Jun 30, 2026Schneider Eugeneofficer: EVP, Chf Clinical Develop OfcrSell26,000$81.05
Jun 30, 2026O'NEIL PATRICK R.officer: EVP CLO & General CounselSell3,069$80.00
Jun 26, 2026Monia Brett Pdirector, officer: Chief Executive OfficerSell14,565$78.41
Jun 26, 2026Monia Brett Pdirector, officer: Chief Executive OfficerSell50,000$80.59

Source: IONS SEC Form 4 filings, latest Jul 9, 2026. For informational purposes only — not investment advice.

Institutional activity (13F)

How institutions changed their IONS positions over the last 6 months (SEC Form 13F).

Increased
365
New positions
175
Reduced
305
Sold out
110
Largest moves
InstitutionActionSharesFiled
FMR LLCIncreased24.6MMay 15, 2026
FMR LLCIncreased24.1MFeb 17, 2026
CAPITAL WORLD INVESTORSIncreased21.2MMay 13, 2026
CAPITAL WORLD INVESTORSIncreased18.0MFeb 11, 2026
VANGUARD GROUP INCReduced16.4MJan 29, 2026
BLACKROCK, INC.Increased10.6MFeb 12, 2026
BLACKROCK, INC.Reduced10.4MMay 13, 2026
T. ROWE PRICE INVESTMENT MANAGEMENT, INC.Reduced9.1MFeb 19, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCNew Position7.8MMay 8, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position7.1MMay 15, 2026
WELLINGTON MANAGEMENT GROUP LLPIncreased6.4MMay 15, 2026
WELLINGTON MANAGEMENT GROUP LLPReduced6.3MFeb 17, 2026
T. ROWE PRICE INVESTMENT MANAGEMENT, INC.Reduced6.2MMay 15, 2026
TWO SIGMA INVESTMENTS, LPIncreased5.9MMay 15, 2026
BELLEVUE GROUP AGReduced4.8MFeb 17, 2026

Source: SEC Form 13F filings. For informational purposes only — not investment advice.