Insider trading

Period: 120 months Stock: PRTA Share of holding: 50% or more × + Add filter Clear all
Views & alerts

Save your view. Keep the filter you have built, and get an email when a new filing matches it. A free account does both.

When

Period

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

133 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.

133 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.

133 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.

133 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.
133 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
133 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.

133 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
29 Sep 2026
SCULLY WILLIAM P 10% owner · indirect
Bought
$1.41M 162,000 at 8.68
312%
Largest buy in 3 yrs
28 Sep 2026
SCULLY WILLIAM P 10% owner · indirect
Bought
$889.87K 103,500 at 8.60
124%
+124% of stake
24 Jan 2024
Walker Karin L Chief Accounting Officer
Sold on a plan
$170.00K 5,000 at 34.00
100%
Sold half or more
20 Dec 2023
Walker Karin L Chief Accounting Officer
Sold on a plan 2×
$185.95K 5,000 at 37.19
100%
Sold half or more
30 Nov 2023
Walker Karin L Chief Accounting Officer
Sold on a plan
$170.00K 5,000 at 34.00
100%
Sold half or more
25 Oct 2023
Walker Karin L Chief Accounting Officer
Sold on a plan 3×
$205.19K 5,000 at 41.04
100%
Sold half or more
11 Oct 2023
Smith Brandon S. Chief Operating Officer
Sold on a plan 2×
$186.98K 4,000 at 46.75
100%
Sold half or more
4 Oct 2023
Karp Carol D. Chief Regulatory Officer
Sold on a plan 2×
$233.08K 5,000 at 46.62
100%
Sold half or more
27 Sep 2023
Malecek Michael J Chief Legal Officer
Sold on a plan 2×
$236.88K 5,000 at 47.38
100%
Sold half or more
19 Sep 2023
Walker Karin L Chief Accounting Officer
Sold on a plan
$261.81K 5,000 at 52.36
100%
Sold half or more
13 Sep 2023
Smith Brandon S. Chief Operating Officer
Sold on a plan 2×
$221.96K 4,000 at 55.49
100%
Sold half or more
13 Sep 2023
Garren Hideki Chief Medical Officer
Sold on a plan
$110.95K 2,000 at 55.48
100%
Sold half or more
6 Sep 2023
Karp Carol D. Chief Regulatory Officer
Sold on a plan 2×
$273.80K 5,000 at 54.76
100%
Sold half or more
30 Aug 2023
Malecek Michael J Chief Legal Officer
Sold on a plan 3×
$275.07K 5,000 at 55.01
100%
Sold half or more
18 Aug 2023
Walker Karin L Chief Accounting Officer
Sold on a plan
$285.92K 5,000 at 57.18
100%
Sold half or more
16 Aug 2023
Smith Brandon S. Chief Operating Officer
Sold on a plan 3×
$234.84K 4,000 at 58.71
100%
Sold half or more
16 Aug 2023
Garren Hideki Chief Medical Officer
Sold on a plan 3×
$117.48K 2,000 at 58.74
100%
Sold half or more
2 Aug 2023
Karp Carol D. Chief Regulatory Officer
Sold on a plan 2×
$335.07K 5,000 at 67.01
100%
Sold half or more
2 Aug 2023
Zago Wagner M. Chief Scientific Officer
Sold on a plan 2×
$268.18K 4,000 at 67.05
100%
Sold half or more
26 Jul 2023
Malecek Michael J Chief Legal Officer
Sold on a plan 3×
$311.64K 5,000 at 62.33
100%
Sold half or more
19 Jul 2023
Walker Karin L Chief Accounting Officer
Sold on a plan 2×
$345.94K 5,000 at 69.19
100%
Sold half or more
12 Jul 2023
Smith Brandon S. Chief Operating Officer
Sold on a plan 2×
$270.03K 4,000 at 67.51
100%
Sold half or more
12 Jul 2023
Garren Hideki Chief Medical Officer
Sold on a plan 2×
$135.03K 2,000 at 67.51
100%
Sold half or more
5 Jul 2023
Karp Carol D. Chief Regulatory Officer
Sold on a plan 2×
$340.64K 5,000 at 68.13
100%
Sold half or more
5 Jul 2023
Zago Wagner M. Chief Scientific Officer
Sold on a plan 2×
$272.65K 4,000 at 68.16
100%
Sold half or more
3 Jul 2023
Selkoe Dennis J. Director
Sold on a plan
$337.15K 5,000 at 67.43
63.7%
Sold half or more
28 Jun 2023
Malecek Michael J Chief Legal Officer
Sold on a plan 3×
$349.12K 5,000 at 69.82
100%
Sold half or more
20 Jun 2023
Walker Karin L Chief Accounting Officer
Sold on a plan 3×
$344.49K 5,000 at 68.90
100%
Sold half or more
16 Jun 2023
Garren Hideki Chief Medical Officer
Sold on a plan
$542.49K 7,331 at 74.00
100%
Sold half or more
14 Jun 2023
Smith Brandon S. Chief Operating Officer
Sold on a plan 4×
$394.56K 5,333 at 73.98
100%
Sold half or more
14 Jun 2023
Garren Hideki Chief Medical Officer
Sold on a plan 4×
$346.52K 4,669 at 74.22
100%
Sold half or more
7 Jun 2023
Karp Carol D. Chief Regulatory Officer
Sold on a plan 4×
$1.42M 20,000 at 71.05
100%
Sold half or more
7 Jun 2023
Zago Wagner M. Chief Scientific Officer
Sold on a plan 4×
$1.35M 19,000 at 71.06
100%
Sold half or more
31 May 2023
Malecek Michael J Chief Legal Officer
Sold on a plan 3×
$323.22K 5,000 at 64.64
100%
Sold half or more
19 May 2023
Walker Karin L Chief Accounting Officer
Sold on a plan 2×
$369.98K 5,000 at 74.00
100%
Sold half or more
17 May 2023
Nguyen Tran Chief Strategy Officer and CFO
Sold on a plan 5×
$7.03M 95,000 at 73.99
96.7%
Sold half or more
17 May 2023
Kinney Gene G. President and CEO
Sold on a plan 3×
$3.32M 45,000 at 73.70
77.9%
Sold half or more
3 May 2023
Selkoe Dennis J. Director
Sold on a plan
$855.00K 15,000 at 57.00
84.1%
Sold half or more
26 Apr 2023
Malecek Michael J Chief Legal Officer
Sold on a plan 2×
$267.29K 5,000 at 53.46
100%
Sold half or more
19 Apr 2023
Walker Karin L Chief Accounting Officer
Sold on a plan 2×
$264.48K 5,000 at 52.90
100%
Sold half or more
29 Mar 2023
Malecek Michael J Chief Legal Officer
Sold on a plan 2×
$245.12K 5,000 at 49.02
100%
Sold half or more
20 Mar 2023
Walker Karin L Chief Accounting Officer
Sold at will 2×
$238.61K 5,000 at 47.72
100%
Sold half or more
15 Mar 2023
Walker Karin L Chief Accounting Officer
Sold, plan not stated 2×
$968.35K 20,000 at 48.42
100%
Sold half or more
15 Mar 2023
Malecek Michael J Chief Legal Officer
Sold, plan not stated 2×
$726.59K 15,000 at 48.44
100%
Sold half or more
15 Mar 2023
Garren Hideki Chief Medical Officer
Sold, plan not stated 2×
$580.94K 12,000 at 48.41
100%
Sold half or more
15 Mar 2023
Nguyen Tran Chief Strategy Officer and CFO
Sold, plan not stated 2×
$484.31K 10,000 at 48.43
75.8%
Sold half or more
15 Feb 2023
Nguyen Tran Chief Strategy Officer and CFO
Sold, plan not stated 2×
$533.40K 10,000 at 53.34
75.8%
Sold half or more
18 Jan 2023
Nguyen Tran Chief Strategy Officer and CFO
Sold, plan not stated 3×
$555.31K 10,000 at 55.53
75.8%
Sold half or more
10 Jan 2023
Cooke Shane Director
Sold, plan not stated
$264.61K 5,000 at 52.92
100%
Sold half or more
5 Jan 2023
Sold, plan not stated
$263.35K 5,000 at 52.67
80.4%
Sold half or more
Showing 1–50 of 133. Page 1 of 3 Older →