Insider trading

Period: 120 months Stock: ACM + 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.

65 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.

65 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.

65 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.

65 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.
65 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
65 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.

65 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
16 Jun 2026
Poloni Lara PRESIDENT
Bought
$298.34K 4,224 at 70.63
2.8%
First buy on file
14 May 2026
Rudd Troy CHIEF EXECUTIVE OFFICER
Bought
$300.06K 4,225 at 71.02
3.1%
First buy on file
14 May 2026
Kapoor Gaurav CHIEF FINANCIAL OFFICER (PAO)
Bought
$100.99K 1,420 at 71.12
1.6%
First buy on file
17 Dec 2025
Poloni Lara PRESIDENT
Sold on a plan 2×
$1.70M 17,533 at 97.02
10.5%
Planned (10b5-1)
17 Dec 2025
Gan David Y. CHIEF LEGAL OFFICER
Sold on a plan
$921.79K 9,502 at 97.01
18.6%
Planned (10b5-1)
15 Dec 2025
Gan David Y. CHIEF LEGAL OFFICER
Sold on a plan
$593.10K 6,000 at 98.85
10.5%
Planned (10b5-1)
15 Aug 2025
Rudd Troy CHIEF EXECUTIVE OFFICER
Sold on a plan 2×
$6.35M 53,097 at 119.56
100%
Sold half or more
18 Dec 2024
Gan David Y. CHIEF LEGAL OFFICER
Sold on a plan
$337.00K 3,036 at 111.00
6.9%
Planned (10b5-1)
17 Dec 2024
Gan David Y. CHIEF LEGAL OFFICER
Sold on a plan
$701.03K 6,362 at 110.19
12.6%
Planned (10b5-1)
16 Dec 2024
Gan David Y. CHIEF LEGAL OFFICER
Sold on a plan 2×
$1.28M 11,500 at 111.46
18.6%
Planned (10b5-1)
6 Nov 2024
Kapoor Gaurav CHIEF FINANCIAL OFFICER (PAO)
Sold on a plan
$4.89M 42,400 at 115.34
57.6%
Sold half or more
3 Oct 2024
Rudd Troy CHIEF EXECUTIVE OFFICER · indirect
Sold on a plan 3×
$3.42M 33,334 at 102.58
15.8%
Planned (10b5-1)
2 Oct 2024
Rudd Troy CHIEF EXECUTIVE OFFICER · indirect
Sold on a plan 2×
$3.40M 33,333 at 102.07
13.6%
Planned (10b5-1)
1 Oct 2024
Rudd Troy CHIEF EXECUTIVE OFFICER · indirect
Sold on a plan 2×
$3.42M 33,333 at 102.71
12.0%
Planned (10b5-1)
15 Aug 2024
Rudd Troy CHIEF EXECUTIVE OFFICER
Sold on a plan 2×
$3.34M 34,710 at 96.36
11.1%
Planned (10b5-1)
10 May 2024
Stotlar Douglas Director
Sold at will
$671.31K 7,179 at 93.51
17.2%
Not planned
6 Feb 2024
Sold at will
$192.89K 2,255 at 85.54
24.5%
Not planned
15 Dec 2023
Rudd Troy CHIEF EXECUTIVE OFFICER
Sold on a plan 2×
$2.32M 25,000 at 92.76
8.8%
Planned (10b5-1)
14 Dec 2023
Poloni Lara PRESIDENT
Sold at will
$2.84M 30,692 at 92.50
36.3%
Not planned
16 Nov 2023
Stotlar Douglas Director
Sold at will
$836.45K 9,641 at 86.76
19.5%
Not planned
15 Aug 2023
Rudd Troy CHIEF EXECUTIVE OFFICER
Sold on a plan 2×
$6.90M 78,097 at 88.33
29.6%
Planned (10b5-1)
13 Mar 2023
Sold, plan not stated
$1.71M 20,618 at 82.92
31.8%
9 Jan 2023
Poloni Lara PRESIDENT
Sold, plan not stated 3×
$539.99K 6,498 at 83.10
8.1%
5 Jan 2023
Battley Todd CHIEF STRATEGY OFFICER
Sold, plan not stated
$235.09K 2,800 at 83.96
14.7%
16 Dec 2022
Rudd Troy CHIEF EXECUTIVE OFFICER
Sold, plan not stated 2×
$11.49M 139,308 at 82.51
43.2%
25 Oct 2021
Sold, plan not stated
$2.06M 29,792 at 69.00
33.3%
25 Aug 2021
Sold, plan not stated
$1.97M 29,792 at 66.00
25.0%
20 Aug 2020
Chiao Chuan-Sheng President, Asia Pacific
Sold, plan not stated
$832.88K 21,594 at 38.57
36.1%
13 May 2020
Rudd Troy EVP, CFO
Bought
$250.71K 8,343 at 30.05
12.4%
First buy on file
27 Dec 2019
Vollmer John C. Group President, MS
Sold, plan not stated
$1.31M 30,240 at 43.28
72.6%
Sold half or more
22 Nov 2019
Feld Peter A Director · indirect
Bought
$8.51M 200,000 at 42.56
3.5%
First buy on file
15 Nov 2019
Morriss Steve Group President, Design and Co
Sold, plan not stated
$1.21M 28,160 at 43.12
100%
Sold half or more
12 Apr 2019
Christofferson Carla J EVP, Chief Legal Officer
Sold, plan not stated
$268.90K 8,403 at 32.00
92.8%
Sold half or more
11 Mar 2019
Sold, plan not stated
$752.66K 25,000 at 30.11
20.3%
18 Dec 2018
Christofferson Carla J EVP, Chief Legal Officer
Sold, plan not stated
$435.11K 15,756 at 27.62
63.1%
Sold half or more
17 Sep 2018
Poloni Lara Chief Executive, EMIA
Sold, plan not stated
$52.21K 1,607 at 32.49
41.3%
6 Jul 2018
Christofferson Carla J EVP, Chief Legal Officer
Sold, plan not stated
$33.00K 1,000 at 33.00
54.9%
Sold half or more
4 Jun 2018
Chiao Chuan-Sheng President, Asia Pacific
Sold, plan not stated
$601.20K 18,000 at 33.40
45.2%
1 Jun 2018
Chiao Chuan-Sheng President, Asia Pacific
Sold, plan not stated
$56.63K 1,700 at 33.31
4.1%
14 Mar 2018
Poloni Lara Chief Executive, EMIA
Sold, plan not stated
$182.64K 4,976 at 36.70
56.1%
Sold half or more
13 Mar 2018
McQuade Daniel P President, Construction Srvcs.
Sold, plan not stated
$478.60K 12,935 at 37.00
83.0%
Sold half or more
27 Feb 2018
Tishman Daniel R. Vice Chairman
Sold, plan not stated
$555.00K 15,000 at 37.00
11.6%
16 Jan 2018
Tishman Daniel R. Vice Chairman
Sold, plan not stated
$583.20K 15,000 at 38.88
10.4%
12 Jan 2018
GRIEGO LINDA M Director
Sold, plan not stated
$196.65K 5,160 at 38.11
15.5%
26 Dec 2017
Routs Rob J Director
Sold, plan not stated 2×
$240.09K 6,468 at 37.12
26.9%
15 Dec 2017
Tishman Daniel R. Vice Chairman
Bought
$573.90K 15,000 at 38.26
11.6%
First buy on file
13 Dec 2017
FORDYCE JAMES H Director
Bought
$166.81K 4,390 at 38.00
3.3%
First buy on file
12 Dec 2017
Burke Michael S Chairman & CEO
Sold, plan not stated
$1.17M 30,000 at 39.00
16.0%
5 Oct 2017
Burke Michael S Chairman & CEO
Sold, plan not stated
$2.09M 56,800 at 36.86
25.7%
27 Sep 2017
Burke Michael S Chairman & CEO
Sold, plan not stated
$1.11M 30,000 at 37.00
16.3%
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