Insider trading

Period: 12 months Type of trade: Bought × Minimum amount: $10M × + 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.

350 decisions over 12 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.

350 decisions over 12 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.

350 decisions over 12 months Remove this filter
The trade

Minimum amount

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

350 decisions over 12 months Remove this filter
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.
350 decisions over 12 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
350 decisions over 12 months
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.

350 decisions over 12 months
Stock
Insider
Type ?
Why it stands out
9 Feb 2026
BASKETT FOREST 10% owner · indirect
Bought
$15.00M 937,500 at 16.00
18.4%
First buy on file
9 Feb 2026
Florence Anthony A. Jr. 10% owner · indirect
Bought
$15.00M 937,500 at 16.00
18.4%
First buy on file
9 Feb 2026
Behbahani Ali Director · indirect
Bought
$15.00M 937,500 at 16.00
18.4%
First buy on file
6 Feb 2026
Column Group IV GP, LP 10% owner · indirect
Bought 3×
$38.12M 2,117,760 at 18.00
96.5%
First buy on file
5 Feb 2026
ENRIGHT PATRICK G Director · indirect
Bought 2×
$18.28M 1,075,000 at 17.00
70.5%
First buy on file
5 Feb 2026
Longitude Capital Partners V, LLC 10% owner · indirect
Bought 2×
$18.28M 1,075,000 at 17.00
70.5%
First buy on file
2 Feb 2026
Bought on a plan 2×
$16.95M 250,221 at 67.75
0.4%
Bought on a plan
30 Jan 2026
BlackRock Portfolio Management LLC 10% owner · indirect
Bought
$25.59M 752,500 at 34.00
4.4%
First buy on file
30 Jan 2026
Bought on a plan
$13.33M 195,000 at 68.36
0.3%
Bought on a plan
29 Jan 2026
Bought on a plan 2×
$19.76M 290,000 at 68.13
0.5%
Bought on a plan
28 Jan 2026
PAULSON & CO. INC. 10% owner · indirect
Bought
$21.79M 9,813,650 at 2.22
11.1%
28 Jan 2026
Bought on a plan 2×
$20.89M 308,931 at 67.61
0.6%
Bought on a plan
27 Jan 2026
PAULSON & CO. INC. 10% owner · indirect
Bought
$40.00M 18,018,018 at 2.22
25.7%
Largest buy in 3 yrs
27 Jan 2026
Bought on a plan 5×
$23.60M 350,000 at 67.42
0.6%
Bought on a plan
26 Jan 2026
Bought on a plan 2×
$24.81M 370,000 at 67.07
0.7%
Bought on a plan
23 Jan 2026
Bought on a plan 2×
$24.64M 368,000 at 66.96
0.7%
Bought on a plan
22 Jan 2026
L1 Capital Pty Ltd 10% owner · indirect
Bought
$28.75M 5,000,000 at 5.75
60.8%
First buy on file
22 Jan 2026
Bought on a plan
$22.26M 330,000 at 67.45
0.6%
Bought on a plan
21 Jan 2026
WATSA V PREM ET AL 10% owner · indirect
Bought
$29.46M 5,000,000 at 5.89
38.3%
+38% of stake
21 Jan 2026
Bought on a plan 2×
$21.59M 320,000 at 67.48
0.6%
Bought on a plan
21 Jan 2026
Cohen Ryan President, CEO and Chairman
Bought
$10.80M 500,000 at 21.60
1.3%
Cluster · 3 buyers
20 Jan 2026
Bought on a plan 2×
$21.02M 310,000 at 67.80
0.6%
Bought on a plan
20 Jan 2026
Cohen Ryan President, CEO and Chairman
Bought
$10.56M 500,000 at 21.12
1.3%
Cluster · 3 buyers
16 Jan 2026
Bought on a plan 2×
$20.45M 300,000 at 68.18
0.6%
Bought on a plan
16 Jan 2026
WATSA V PREM ET AL 10% owner · indirect
Bought
$10.28M 1,837,686 at 5.60
19.4%
15 Jan 2026
Bought on a plan 2×
$16.19M 235,000 at 68.90
0.4%
Bought on a plan
15 Jan 2026
Bought 2×
$11.59M 985,704 at 11.76
12.6%
Largest buy in 3 yrs
14 Jan 2026
Bought on a plan 2×
$15.91M 230,000 at 69.19
0.4%
Bought on a plan
13 Jan 2026
Bought on a plan 2×
$22.11M 325,000 at 68.03
0.6%
Bought on a plan
12 Jan 2026
EcoR1 Capital, LLC Director · indirect
Bought 2×
$40.00M 2,222,222 at 18.00
105%
First buy on file
12 Jan 2026
GADICKE ANSBERT 10% owner · indirect
Bought
$20.03M 1,112,777 at 18.00
12.2%
First buy on file
12 Jan 2026
MPM BIOVENTURES 2018, L.P. 10% owner · indirect
Bought
$20.03M 1,112,777 at 18.00
12.2%
First buy on file
12 Jan 2026
Bought on a plan
$17.60M 256,041 at 68.73
0.5%
Bought on a plan
12 Jan 2026
Kim Helen Susan Director · indirect
Bought 2×
$15.03M 835,000 at 18.00
17.3%
First buy on file
12 Jan 2026
Vida Ventures II, LLC 10% owner · indirect
Bought 2×
$15.03M 835,000 at 18.00
17.3%
First buy on file
9 Jan 2026
Bought on a plan 3×
$18.96M 275,000 at 68.95
0.5%
Bought on a plan
8 Jan 2026
Bought on a plan 3×
$13.68M 195,000 at 70.16
0.4%
Bought on a plan
7 Jan 2026
Bought on a plan 2×
$18.15M 265,000 at 68.50
0.5%
Bought on a plan
6 Jan 2026
Bought on a plan 2×
$15.08M 215,288 at 70.05
0.4%
Bought on a plan
5 Jan 2026
Bought on a plan 3×
$14.18M 200,930 at 70.59
0.4%
Bought on a plan
2 Jan 2026
Bought on a plan
$16.49M 237,734 at 69.35
0.5%
Bought on a plan
31 Dec 2025
Bought on a plan
$16.16M 230,000 at 70.27
0.5%
Bought on a plan
30 Dec 2025
WATSA V PREM ET AL 10% owner · indirect
Bought
$59.14M 11,504,478 at 5.14
37.8%
Largest buy in 3 yrs
30 Dec 2025
Bought on a plan
$14.52M 205,000 at 70.83
0.4%
Bought on a plan
29 Dec 2025
Bought on a plan
$14.51M 205,000 at 70.77
0.4%
Bought on a plan
26 Dec 2025
GABELLI MARIO J Director · indirect
Bought 3×
$36.00M 3,600,000 at 10.00
opened
Largest buy in 3 yrs
26 Dec 2025
GABELLI MARIO J Director
Bought
$22.19M 2,218,500 at 10.00
70.8%
+71% of stake
26 Dec 2025
Bought on a plan
$15.52M 220,000 at 70.56
0.4%
Bought on a plan
26 Dec 2025
GABELLI MARIO J Director
Bought
$10.00M 1,000,000 at 10.00
opened
24 Dec 2025
Bought on a plan
$15.51M 220,000 at 70.51
0.4%
Bought on a plan
Showing 251–300 of 350. ← Newer Page 6 of 7 Older →