Insider trading

Period: 12 months Stock: ALMU Type of trade: Sold × + 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.

37 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.

37 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.

37 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.

37 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.
37 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
37 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.

37 decisions over 12 months
Stock
Insider
Type ?
Why it stands out
21 Sep 2026
Klamkin Jonathan Chief Executive Officer · indirect
Sold on a plan
$1.34M 100,000 at 13.35
7.5%
Planned (10b5-1)
27 Aug 2026
Denbaars Steven Director
Sold at will
$172.70K 12,500 at 13.82
3.5%
Not planned
26 Aug 2026
Denbaars Steven Director
Sold at will
$173.04K 12,500 at 13.84
3.4%
Not planned
3 Aug 2026
Klamkin Jonathan Chief Executive Officer
Sold on a plan 2×
$334.64K 20,000 at 16.73
89.3%
Sold half or more
1 Jul 2026
Klamkin Jonathan Chief Executive Officer
Sold on a plan 2×
$421.67K 20,000 at 21.08
89.3%
Sold half or more
1 Jun 2026
Klamkin Jonathan Chief Executive Officer
Sold on a plan 5×
$500.66K 20,000 at 25.03
89.3%
Sold half or more
20 May 2026
Denbaars Steven Director
Sold on a plan 2×
$255.80K 12,500 at 20.46
3.3%
Planned (10b5-1)
19 May 2026
Denbaars Steven Director
Sold on a plan 2×
$249.83K 12,500 at 19.99
3.2%
Planned (10b5-1)
1 May 2026
Klamkin Jonathan Chief Executive Officer
Sold on a plan 3×
$499.27K 20,000 at 24.96
89.3%
Sold half or more
1 Apr 2026
Klamkin Jonathan Chief Executive Officer
Sold on a plan
$261.95K 20,000 at 13.10
1.4%
Planned (10b5-1)
4 Mar 2026
Klamkin Jonathan Chief Executive Officer
Sold on a plan 2×
$902.60K 50,000 at 18.05
3.4%
Planned (10b5-1)
26 Feb 2026
Denbaars Steven Director
Sold on a plan
$198.09K 12,500 at 15.85
3.1%
Planned (10b5-1)
25 Feb 2026
Denbaars Steven Director
Sold on a plan
$219.77K 12,500 at 17.58
3.0%
Planned (10b5-1)
4 Feb 2026
Tompkins Mark N. Former 10% Owner
Sold at will 2×
$507.65K 34,500 at 14.71
1.9%
Not planned
2 Feb 2026
Tompkins Mark N. 10% owner
Sold at will
$590.25K 37,500 at 15.74
2.0%
Not planned
30 Jan 2026
Tompkins Mark N. 10% owner
Sold at will 2×
$397.83K 25,000 at 15.91
1.3%
Not planned
29 Jan 2026
Tompkins Mark N. 10% owner
Sold at will 2×
$546.51K 32,500 at 16.82
1.7%
Not planned
22 Jan 2026
Tompkins Mark N. 10% owner
Sold at will 2×
$542.23K 30,000 at 18.07
1.5%
Not planned
21 Jan 2026
Tompkins Mark N. 10% owner
Sold at will 4×
$846.82K 45,000 at 18.82
2.3%
Not planned
20 Jan 2026
Tompkins Mark N. 10% owner
Sold at will 2×
$620.62K 30,000 at 20.69
1.5%
Not planned
26 Dec 2025
Tompkins Mark N. 10% owner
Sold at will 3×
$533.64K 30,000 at 17.79
1.5%
Not planned
24 Dec 2025
Tompkins Mark N. 10% owner
Sold at will
$240.75K 15,000 at 16.05
0.7%
Not planned
23 Dec 2025
Tompkins Mark N. 10% owner
Sold at will
$223.05K 15,000 at 14.87
0.7%
Not planned
22 Dec 2025
Tompkins Mark N. 10% owner
Sold at will
$519.05K 35,000 at 14.83
1.7%
Not planned
19 Dec 2025
Tompkins Mark N. 10% owner
Sold at will
$441.00K 30,000 at 14.70
1.4%
Not planned
18 Dec 2025
Tompkins Mark N. 10% owner
Sold at will
$287.40K 20,000 at 14.37
0.9%
Not planned
10 Dec 2025
Tompkins Mark N. 10% owner
Sold at will
$349.80K 20,000 at 17.49
0.9%
Not planned
9 Dec 2025
Tompkins Mark N. 10% owner
Sold at will 2×
$504.52K 30,000 at 16.82
1.4%
Not planned
8 Dec 2025
Tompkins Mark N. 10% owner
Sold at will 2×
$642.42K 40,000 at 16.06
1.8%
Not planned
5 Dec 2025
Tompkins Mark N. 10% owner
Sold at will 2×
$484.20K 30,000 at 16.14
1.3%
Not planned
4 Dec 2025
Tompkins Mark N. 10% owner
Sold at will 2×
$480.98K 30,000 at 16.03
1.3%
Not planned
20 Oct 2025
Tompkins Mark N. 10% owner
Sold at will
$614.63K 37,500 at 16.39
1.6%
Not planned
17 Oct 2025
Tompkins Mark N. 10% owner
Sold at will 3×
$677.29K 40,000 at 16.93
1.7%
Not planned
16 Oct 2025
Tompkins Mark N. 10% owner
Sold at will 3×
$482.25K 25,000 at 19.29
1.0%
Not planned
15 Oct 2025
Tompkins Mark N. 10% owner
Sold at will 2×
$823.42K 40,000 at 20.59
1.6%
Not planned
14 Oct 2025
Tompkins Mark N. 10% owner
Sold at will
$731.94K 36,855 at 19.86
1.5%
Not planned
13 Oct 2025
Tompkins Mark N. 10% owner
Sold at will 2×
$599.75K 35,331 at 16.98
1.4%
Not planned
Showing 1–37 of 37.