Insider trading

Period: 12 months Stock: LYEL + 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.

30 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.

30 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.

30 decisions over 12 months
The trade

Minimum amount

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

30 decisions over 12 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.
30 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
30 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.

30 decisions over 12 months
Stock
Insider
Type ?
Why it stands out
10 Sep 2026
Shook David Chief Medical Officer
Sold at will
$6.35K 500 at 12.70
2.4%
Not planned
21 Aug 2026
Seely Lynn President and CEO
Sold at will
$149.01K 9,589 at 15.54
13.0%
Not planned
21 Aug 2026
Lee Gary K. Chief Scientific Officer
Sold at will
$22.64K 1,457 at 15.54
8.2%
Not planned
21 Aug 2026
Hill Stephen J. Chief Operating Officer
Sold at will
$15.37K 989 at 15.54
5.6%
Not planned
10 Aug 2026
Bulis Veronica Sanchez VP, Corporate Controller
Sold at will
$8.91K 621 at 14.34
4.0%
Not planned
10 Aug 2026
Seely Lynn President and CEO
Sold at will
$5.59K 390 at 14.34
0.5%
Not planned
10 Aug 2026
Lee Gary K. Chief Scientific Officer
Sold at will
$1.88K 131 at 14.34
0.7%
Not planned
10 Aug 2026
Hill Stephen J. Chief Operating Officer
Sold at will
$1.28K 89 at 14.34
0.5%
Not planned
17 Jul 2026
Sold on a plan
$137.00 10 at 13.70
0.0%
Planned (10b5-1)
16 Jul 2026
Sold on a plan
$137.30 10 at 13.73
0.0%
Planned (10b5-1)
10 Jun 2026
Shook David Chief Medical Officer
Sold at will
$24.99K 1,977 at 12.64
8.6%
Not planned
11 May 2026
Seely Lynn President and CEO
Sold at will
$7.34K 388 at 18.91
0.5%
Not planned
11 May 2026
Bulis Veronica Sanchez VP, Corporate Controller
Sold at will
$4.10K 217 at 18.91
1.4%
Not planned
11 May 2026
Lee Gary K. Chief Scientific Officer
Sold at will
$2.46K 130 at 18.92
0.7%
Not planned
11 May 2026
Hill Stephen J. Chief Operating Officer
Sold at will
$1.68K 89 at 18.92
0.5%
Not planned
6 Mar 2026
ARCH Venture Partners IX, LLC 10% owner · indirect
Bought
$12.50M 488,090 at 25.61
52.0%
First buy on file
6 Mar 2026
ARCH Venture Fund XIII, L.P. 10% owner · indirect
Bought
$12.50M 488,090 at 25.61
52.0%
First buy on file
11 Feb 2026
Seely Lynn President and CEO
Sold at will
$174.37K 7,455 at 23.39
9.1%
Not planned
11 Feb 2026
Lee Gary K. Chief Scientific Officer
Sold at will
$39.08K 1,671 at 23.39
9.0%
Not planned
11 Feb 2026
Hill Stephen J. Chief Operating Officer
Sold at will
$28.91K 1,236 at 23.39
6.5%
Not planned
10 Feb 2026
Seely Lynn President and CEO
Sold at will
$10.13K 438 at 23.12
0.5%
Not planned
10 Feb 2026
Bulis Veronica Sanchez VP, Corporate Controller
Sold at will
$5.87K 254 at 23.12
1.6%
Not planned
10 Feb 2026
Lee Gary K. Chief Scientific Officer
Sold at will
$3.40K 147 at 23.12
0.8%
Not planned
10 Feb 2026
Hill Stephen J. Chief Operating Officer
Sold at will
$2.52K 109 at 23.12
0.6%
Not planned
30 Dec 2025
Bulis Veronica Sanchez VP, Corporate Controller
Sold at will
$30.25K 936 at 32.32
11.6%
Not planned
24 Dec 2025
Bulis Veronica Sanchez VP, Corporate Controller
Sold at will
$43.93K 1,136 at 38.67
12.3%
Not planned
10 Nov 2025
Seely Lynn President and CEO
Sold at will
$6.64K 412 at 16.11
0.6%
Not planned
10 Nov 2025
Bulis Veronica Sanchez VP, Corporate Controller
Sold at will
$3.85K 239 at 16.10
2.5%
Not planned
10 Nov 2025
Lee Gary K. Chief Scientific Officer
Sold at will
$2.23K 138 at 16.16
0.9%
Not planned
10 Nov 2025
Hill Stephen J. Chief Operating Officer
Sold at will
$1.53K 95 at 16.12
0.6%
Not planned
Showing 1–30 of 30.