← All stocks

AMTECH SYSTEMS INC

ASYS Net buying
CIK 0000720500 #3744 in the set updated 17 Sep 2026
Bought (120 mo)
$3.85M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$3.39M
$0.00 on a plan · $2.18M straight out of an exercise
Sold at will
$1.21M
11 of 25 sales
Net
+$459.60K
+$2.64M against sales at will

By person

15 insiders · 106 transactions
9.8×

Robert C. Daigle holds 9.8 times base salary in stock. $4.43M of shares against $450.00K in salary for 2025.

Salary from the company's own proxy. The shares are what Robert C. Daigle last reported holding, valued at $14.14, the price Common Stock was last bought or sold at on the open market here, on 14 Sep 2026.

Insider
Role
Bought
Sold
Net
Holding
Worth
Change
Averick Robert M
Director
$3.13M (49)
+$3.13M
2,986,341
$42.21M
+24.5%
WHANG JONG S
Director
$19.93K (1)
$1.26M (3) scheduled
−$1.24M
70,681
$999.08K
−1.4%
WANSEM PAUL J VAN DER
Director
$1.08M (10)
−$1.08M
340,044
$4.81M
−18.6%
DAIGLE ROBERT C
Chairman & CEO
$602.74K (16)
+$602.74K
313,425
$4.43M
+100.2%
KING ROBERT F
Director
$447.36K (5) scheduled
−$447.36K
2,000
$28.27K
−80.0%
WHANG MICHAEL
Chief Executive Officer
$10.00K (1)
$348.07K (3) scheduled
−$338.07K
31,499
$445.24K
Pentinga Fokko
President and CEO
$186.50K (2) scheduled
−$186.50K
15,000
$212.03K
0.0%
GARNREITER MICHAEL
Director
$50.00K (1) scheduled
−$50.00K
38,569
$545.17K
Shechter Guy
President & CEO
$49.46K (1)
+$49.46K
53,450
$755.52K
+6.9%
SABOL THOMAS B
Chief Financial Officer
$28.27K (1)
+$28.27K
2,000
$28.27K
HASS ROBERT T
CFO
$19.80K (1) scheduled
−$19.80K
1,582
$22.36K
0.0%
GIBBS LISA
VP and Chief Financial Officer
$9.90K (1)
+$9.90K
10,502
$148.45K
LUDWIG MICHAEL M
Director
33,069
$467.43K
Jakwani Asif Y.
Director
8,081
$114.22K
Schreyer Leslie J
10% owner
0
$0.00

No percentages here. These insiders hold more than one class of share between them, and the share count on file covers one of them rather than all. Dividing the two would compare different things.

Insider
Date
Role
Action
Shares
Price
Amount
WHANG MICHAEL
24 Aug 2022
Chief Executive Officer
Sold after exercise
8,750
$12.78
$111.83K
WHANG MICHAEL
24 Aug 2022
Chief Executive Officer
Sold after exercise
15,004
$12.41
$186.20K
WHANG JONG S
23 Aug 2022
Director
Sold after exercise
50,000
$13.07
$653.50K
WHANG JONG S
8 Sep 2021
Chairman
Sold after exercise
36,667
$10.24
$375.58K
KING ROBERT F
3 Dec 2020
Director
Sold after exercise
6,200
$6.75
$41.85K
KING ROBERT F
3 Dec 2020
Director
Sold after exercise
24,000
$6.90
$165.60K
HASS ROBERT T
6 Dec 2018
CFO
Sold after exercise
3,884
$5.10
$19.80K
Pentinga Fokko
1 Jun 2018
President and CEO
Sold after exercise
16,830
$9.92
$166.88K
WHANG MICHAEL
1 Jun 2018
Vice President of Operations
Sold after exercise
5,000
$10.01
$50.05K
Pentinga Fokko
31 May 2018
President and CEO
Sold after exercise
1,920
$10.22
$19.62K
KING ROBERT F
18 Jan 2018
Director
Sold after exercise
17,699
$11.25
$199.11K
GARNREITER MICHAEL
13 Dec 2017
Director
Sold after exercise
5,000
$10.00
$50.00K
WANSEM PAUL J VAN DER
13 Dec 2017
Director
Sold after exercise
11,459
$9.99
$114.48K
KING ROBERT F
7 Jun 2017
Director
Sold after exercise
2,900
$8.70
$25.23K

What was left out

Form 4 filings counted 138
Amendments (4/A) skipped 1
Filings about a different issuer 0
Unreadable filings 0
Joint filings 0
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 14
Sales at will 11
Transactions with no price 0
Shares from compensation/vesting 486,851
Sales filed before the plan box existed 11
History held since 18 Nov 2016