Insider trading

Period: 120 months Stock: SLDB Minimum amount: $100K × + Add filter Clear all
Views & alerts

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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.

32 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.

32 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.

32 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.

32 decisions over 120 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.
32 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
32 decisions over 120 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.

32 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
4 Feb 2026
Cumbo Alexander President and CEO
Sold on a plan
$315.09K 48,913 at 6.44
18.1%
Planned (10b5-1)
4 Feb 2026
Howton David T Chief Operating Officer
Sold on a plan
$121.71K 18,894 at 6.44
16.2%
Planned (10b5-1)
2 Feb 2026
Cumbo Alexander President and CEO
Sold on a plan
$516.61K 80,258 at 6.44
22.9%
Planned (10b5-1)
2 Feb 2026
Howton David T Chief Operating Officer
Sold on a plan
$243.13K 37,771 at 6.44
24.4%
Planned (10b5-1)
2 Feb 2026
Brooks Gabriel Chief Medical Officer
Sold on a plan
$182.39K 28,335 at 6.44
22.7%
Planned (10b5-1)
2 Feb 2026
Tan Kevin CFO & Treasurer
Sold on a plan
$172.75K 26,837 at 6.44
19.8%
Planned (10b5-1)
2 Feb 2026
Hanrahan Jessie Chief Regulatory Officer
Sold on a plan
$170.80K 26,535 at 6.44
24.3%
Planned (10b5-1)
2 Feb 2026
Herzich Paul Chief Technology Officer
Sold on a plan
$168.97K 26,250 at 6.44
24.7%
Planned (10b5-1)
19 Feb 2025
PERCEPTIVE ADVISORS LLC Director · indirect
Bought
$20.15M 5,000,000 at 4.03
73.2%
Largest buy in 3 yrs
19 Feb 2025
Bought
$4.03M 1,000,000 at 4.03
24.8%
First buy on file
18 Feb 2025
Adage Capital Management, L.P. 10% owner · indirect
Bought
$1.91M 252,545 at 7.56
6.3%
First buy on file
11 Jan 2024
PERCEPTIVE ADVISORS LLC Director · indirect
Bought
$18.86M 3,410,713 at 5.53
99.6%
Largest buy in 3 yrs
11 Jan 2024
RA CAPITAL MANAGEMENT, L.P. Director · indirect
Bought
$5.00M 904,160 at 5.53
27.5%
+27% of stake
23 Mar 2021
PERCEPTIVE ADVISORS LLC Director · indirect
Bought
$15.00M 2,608,695 at 5.75
24.1%
First buy on file
19 Mar 2021
RA CAPITAL MANAGEMENT, L.P. Director · indirect
Bought
$12.69M 2,206,685 at 5.75
25.3%
First buy on file
12 Mar 2021
Morris Carl Ashley Chief Scientific Officer
Sold, plan not stated 2×
$206.95K 23,398 at 8.84
7.8%
12 Mar 2021
Schneider Joel Solomon Zev Chief Operating Officer
Sold, plan not stated 2×
$206.92K 23,398 at 8.84
8.0%
25 Jul 2019
PERCEPTIVE ADVISORS LLC Director · indirect
Bought
$13.13M 2,822,581 at 4.65
71.9%
First buy on file
28 Mar 2019
Boxer Capital, LLC 10% owner
Sold, plan not stated
$571.80K 60,000 at 9.53
1.7%
27 Mar 2019
Boxer Capital, LLC 10% owner
Sold, plan not stated
$1.10M 115,000 at 9.60
3.2%
26 Mar 2019
Boxer Capital, LLC 10% owner
Sold, plan not stated
$2.77M 275,000 at 10.08
7.0%
14 Jan 2019
Sold, plan not stated 2×
$159.98K 5,000 at 32.00
0.1%
7 Jan 2019
Sold, plan not stated
$150.41K 5,000 at 30.08
0.1%
4 Jan 2019
Amorrortu Pedro Alvaro Chief Operating Officer
Sold, plan not stated
$270.62K 9,000 at 30.07
5.4%
3 Dec 2018
Quiroz Jorge Armando Chief Medical Officer
Sold, plan not stated 4×
$1.25M 40,150 at 31.21
15.0%
3 Dec 2018
Amorrortu Pedro Alvaro Chief Operating Officer
Sold, plan not stated 3×
$279.53K 9,000 at 31.06
5.1%
15 Nov 2018
Ganot Ilan CEO & President
Sold, plan not stated 2×
$1.54M 50,000 at 30.84
4.3%
15 Nov 2018
Sold, plan not stated 2×
$678.18K 21,990 at 30.84
14.8%
15 Nov 2018
Amorrortu Pedro Alvaro Chief Operating Officer
Sold, plan not stated 2×
$277.48K 9,000 at 30.83
5.0%
30 Jan 2018
PERCEPTIVE ADVISORS LLC Director · indirect
Bought 2×
$16.55M 1,020,000 at 16.22
35.1%
First buy on file
30 Jan 2018
Shah Rajeev M. Director · indirect
Bought
$16.00M 1,000,000 at 16.00
59.2%
First buy on file
30 Jan 2018
Koppel Adam Director · indirect
Bought
$4.80M 300,000 at 16.00
17.8%
First buy on file
Showing 1–32 of 32.