Insider trading

Period: 120 months Stock: IONS Share of holding: 50% or more × + Add filter Clear all
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When

Period

How far back the list reaches. Filings arrive days after the trade, so the newest rows always lag a little.

43 decisions over 120 months
Who

Role

The position the person holds at the company, read from the title on the filing. A chief executive who is also a director counts as the chief executive.

43 decisions over 120 months
The trade

Type of trade

Purchases, sales, or cluster buys: companies where 3 or more insiders bought within 30 days. The number beside each is what that choice would give.

43 decisions over 120 months
The trade

Minimum amount

Hides rows under this value. The amount is the shares traded times the price on the filing.

43 decisions over 120 months
The trade

Plan

  • Discretionary: they chose to sell that week.
  • Scheduled: a 10b5-1 plan fixed the sale months in advance, so the timing says nothing about what they knew.
  • Not stated: filed before the SEC added the box in April 2023, which is most of the older half of this database.
43 decisions over 120 months
The trade

Share of their own holding

How much of what they already held the trade moved. Selling a tenth of a stake is not the same act as selling all of it.

At least
43 decisions over 120 months Remove this filter
Ownership

What the chief executive holds

The value of the chief executive’s stock measured against base salary. The salary comes from the company’s own proxy. Companies with no figure are in neither direction.

43 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
30 Jul 2026
Hayden Michael R Director · indirect
Bought
$800.70K 15,000 at 53.38
375%
Largest buy in 3 yrs
7 Jul 2026
BENNETT C FRANK EVP, Chief Scientific Officer · indirect
Sold on a plan
$1.28M 15,000 at 85.46
100%
Sold half or more
7 Jul 2026
Diaz Allene M. Director
Sold on a plan
$863.64K 10,111 at 85.42
72.6%
Sold half or more
1 Jul 2026
KLEIN JOSEPH III Director
Sold on a plan 2×
$910.42K 11,518 at 79.04
51.1%
Sold half or more
26 Jun 2026
Baroldi Joseph EVP, Chief Business Officer · indirect
Sold on a plan
$451.70K 5,635 at 80.16
54.7%
Sold half or more
12 Jun 2026
Kordasiewicz Holly B. EVP, Chief Development Officer
Sold on a plan 2×
$4.47M 60,846 at 73.41
73.0%
Sold half or more
4 May 2026
LOSCALZO JOSEPH Director
Sold on a plan 2×
$5.80M 77,289 at 75.06
68.0%
Sold half or more
1 Apr 2026
KLEIN JOSEPH III Director
Sold on a plan 2×
$1.69M 22,321 at 75.55
67.0%
Sold half or more
16 Mar 2026
HOUGEN ELIZABETH L EVP, Finance & CFO
Sold on a plan 2×
$15.57M 215,048 at 72.40
69.8%
Sold half or more
10 Mar 2026
Jenne Kyle EVP, Chf GL Pdt Str Ofcr
Sold on a plan 2×
$2.83M 37,277 at 75.85
76.1%
Sold half or more
3 Mar 2026
BENNETT C FRANK EVP, Chief Scientific Officer
Sold on a plan 3×
$6.74M 85,089 at 79.23
51.4%
Sold half or more
3 Mar 2026
Diaz Allene M. Director
Sold on a plan 3×
$4.35M 54,878 at 79.35
93.5%
Sold half or more
3 Mar 2026
KLEIN JOSEPH III Director
Sold on a plan 3×
$1.70M 21,332 at 79.51
65.9%
Sold half or more
2 Feb 2026
BENNETT C FRANK EVP, Chief Scientific Officer
Sold on a plan 3×
$7.06M 85,089 at 82.93
51.5%
Sold half or more
7 Jan 2026
Devers Shannon L. EVP, Chief Human Resources Ofc
Sold on a plan 5×
$3.76M 44,199 at 85.08
71.6%
Sold half or more
25 Nov 2025
KLEIN JOSEPH III Director · indirect
Sold on a plan 3×
$960.00K 12,000 at 80.00
100%
Sold half or more
31 Oct 2025
Geary Richard S EVP, Chief Development Officer
Sold on a plan 3×
$6.70M 89,249 at 75.11
59.9%
Sold half or more
2 Oct 2025
O'NEIL PATRICK R. EVP CLO & General Counsel
Sold on a plan 2×
$4.38M 64,664 at 67.69
53.1%
Sold half or more
3 Sep 2025
Monia Brett P Chief Executive Officer
Sold at will 3×
$12.29M 203,814 at 60.32
53.1%
Sold half or more
3 Sep 2025
O'NEIL PATRICK R. EVP CLO & General Counsel
Sold on a plan 2×
$4.69M 76,850 at 60.97
93.1%
Sold half or more
3 Sep 2025
KLEIN JOSEPH III Director · indirect
Sold on a plan 2×
$3.36M 56,000 at 60.00
100%
Sold half or more
3 Sep 2025
Baroldi Joseph EVP, Chief Business Officer
Sold on a plan 2×
$1.95M 32,800 at 59.34
66.0%
Sold half or more
16 Jul 2024
KLEIN JOSEPH III Director · indirect
Sold on a plan
$600.00K 12,000 at 50.00
100%
Sold half or more
3 May 2024
KLEIN JOSEPH III Director · indirect
Sold on a plan 6×
$256.28K 6,000 at 42.71
100%
Sold half or more
26 Jan 2021
CROOKE STANLEY T Exec Chairman of the Board
Sold, plan not stated
$1.81M 28,333 at 63.74
93.3%
Sold half or more
17 Dec 2020
CROOKE STANLEY T Exec Chairman of the Board · indirect
Sold, plan not stated
$71.05K 1,407 at 50.50
89.0%
Sold half or more
25 Nov 2020
CROOKE STANLEY T Exec Chairman of the Board
Sold, plan not stated
$650.15K 12,990 at 50.05
86.5%
Sold half or more
24 Nov 2020
CROOKE STANLEY T Exec Chairman of the Board
Sold, plan not stated
$131.65K 2,590 at 50.83
56.2%
Sold half or more
23 Nov 2020
CROOKE STANLEY T Exec Chairman of the Board
Sold, plan not stated
$581.28K 11,600 at 50.11
85.2%
Sold half or more
21 Sep 2020
CROOKE STANLEY T Exec Chairman of the Board · indirect
Sold, plan not stated
$100.36K 2,000 at 50.18
55.9%
Sold half or more
25 Jun 2020
CROOKE STANLEY T Exec Chairman of the Board
Sold, plan not stated
$595.91K 9,914 at 60.11
83.1%
Sold half or more
4 Jun 2019
MUTO FREDERICK T Director
Sold, plan not stated
$979.35K 15,000 at 65.29
60.5%
Sold half or more
8 Apr 2019
Geary Richard S SVP, Development
Sold, plan not stated 3×
$3.88M 46,240 at 84.01
68.3%
Sold half or more
4 Apr 2019
O'NEIL PATRICK R. SVP Legal & General Counsel
Sold, plan not stated 8×
$3.32M 39,622 at 83.79
70.4%
Sold half or more
18 Mar 2019
O'NEIL PATRICK R. SVP Legal & General Counsel
Sold, plan not stated
$2.27M 28,800 at 78.79
59.4%
Sold half or more
27 Feb 2019
O'NEIL PATRICK R. SVP Legal & General Counsel
Sold, plan not stated 3×
$1.82M 26,800 at 68.01
57.7%
Sold half or more
13 Feb 2019
CROOKE STANLEY T Chairman and CEO · indirect
Sold, plan not stated 2×
$414.24K 6,904 at 60.00
55.5%
Sold half or more
23 Nov 2018
Monia Brett P Chief Operating Officer
Sold, plan not stated
$1.87M 34,000 at 55.00
68.2%
Sold half or more
27 Aug 2018
Monia Brett P Chief Operating Officer
Sold, plan not stated 2×
$890.62K 16,493 at 54.00
51.0%
Sold half or more
31 May 2018
MUTO FREDERICK T Director
Sold, plan not stated
$696.75K 15,000 at 46.45
67.8%
Sold half or more
31 May 2017
MUTO FREDERICK T Director
Sold, plan not stated
$565.25K 12,500 at 45.22
72.9%
Sold half or more
15 Dec 2016
PARSHALL B LYNNE COO · indirect
Sold, plan not stated 4×
$200.00K 4,000 at 50.00
100%
Sold half or more
9 Nov 2016
BENNETT C FRANK SVP, Antisense Research
Sold, plan not stated 2×
$856.60K 22,805 at 37.56
67.9%
Sold half or more
Showing 1–43 of 43.