undamentalytics Newsletter

Amtech Systems Inc insider trading

Every open-market purchase and sale by Amtech Systems Inc's officers, directors and largest shareholders since November 4, 2021, and what the share price did next.

Insider purchase Insider sale Marker size reflects trade value. Weekly closes adjusted for splits; may be delayed.
Amtech Systems Inc insider open-market trades
DateInsiderTrade SharesPriceValue 1M after 3M after 6M after

From insiders' Form 4 filings with the SEC: open-market purchases and sales only (awards, option exercises and shares withheld for tax are excluded), combined to one line per insider per day. "Plan" marks trades the filing says were made under a pre-set Rule 10b5-1 trading plan, which are scheduled in advance. Price changes run from the close on the trade date; hover a figure for the change relative to the S&P 500. Past moves don't predict future ones.

Does following Amtech Systems Inc’s insiders pay?

From January 6, 2010 to September 16, 2026, 19 insiders reported 73 open-market purchases and 55 sales not made under a pre-set plan in Amtech Systems Inc. Twelve months after each purchase was reported, the shares were −29.0% against the S&P 500 on average (median −43.3%), over 58 purchases with a full year of prices; 16% beat the index. After sales, the shares moved −31.7% against the index over 12 months (a negative figure means selling was the right call). Buying each purchase the day after it was reported, an equal amount each, held 12 months or until that insider reported a sale, would have turned $10,000 on March 1, 2011 into $2,562 by November 2, 2026, −8.3% a year. It held shares 67% of the time; the S&P 500 on those same days, with Treasury bills otherwise, made $32,612 (+7.8% a year), and held throughout $76,117 (+13.8%).

$0$25.0k$50.0k$75.0k 20112013201520172019202120232025 $76.1k$32.6k$2.6k
Copying Amtech Systems Inc's insidersS&P 500, same days investedS&P 500, held throughout $10,000 copying every open-market purchase by Amtech Systems Inc's insiders from March 1, 2011, before costs and taxes, marked weekly. Uninvested money earns the Treasury bill rate; the portfolio held shares 67% of the time.
Amtech Systems Inc: each insider's record
InsiderRolePurchases12 months after their purchasesBeat the S&P 500Sales12 months after their salesLatest report
Averick Robert M Director 34 −9.1% (28) 29% 0 — May 16, 2025
Whang Jong S Chairman 3 −77.7% (2) 0% 12 −41.6% (12) August 25, 2022
Schreyer Leslie J 10% owner 11 −36.6% (11) 9% 0 — May 21, 2015
Pentinga Fokko President and CEO 0 — — 10 −44.7% (10) June 1, 2018
Anderson Bradley Clark Chief Financial Officer 2 −77.7% (2) 0% 6 −37.5% (6) May 27, 2015
Daigle Robert C Chairman & CEO 7 −55.9% (4) 0% 0 — May 16, 2025
King Robert F Director 0 — — 7 −32.8% (7) December 4, 2020
Giese Alfred Director 1 −70.8% (1) 0% 5 −36.3% (5) March 14, 2014
Piton Capital Partners LLC 10% owner 6 −26.4% (5) 0% 0 — November 4, 2015
Garnreiter Michael Director 0 — — 3 −62.2% (3) December 15, 2017
Goudena Egbert J. G. Director 3 −78.3% (2) 0% 0 — May 31, 2012
Hass Robert T CFO 0 — — 3 −36.5% (3) December 7, 2018
M3c Holdings LLC 10% owner 3 −42.4% (3) 0% 0 — May 13, 2015
Marxe Austin W & Greenhouse David M 10% owner 0 — — 3 +124.0% (3) January 14, 2010
Wansem Paul J Van Der Director 0 — — 3 −35.9% (3) December 15, 2017
Whang Michael Chief Executive Officer 1 — — 2 −41.0% (2) August 25, 2022
Hwang Jeong Mo Director 0 — — 1 −45.6% (1) September 8, 2010
Sabol Thomas B Chief Financial Officer 1 — — 0 — September 16, 2026
Shechter Guy President & CEO 1 — — 0 — August 25, 2026

Moves are the shares’ return including dividends minus the S&P 500’s, from the close on the first trading day after each report; the number of trades with a finished 12-month window is in brackets. Green means the trade went the insider’s way (a purchase ahead of the index, a sale followed by the shares trailing it). A trade reported both by a director or officer and by a fund or company they are linked to counts once here, under the person. Purchases count only where the share price actually traded was at least $5. These figures describe what the shares did, not why anyone traded. Insiders across all companies.

When several insiders traded Amtech Systems Inc

Months when 2 or more insiders became net buyers, or 3 or more net sellers, of Amtech Systems Inc in reports dated in the 91 days before the month end, and how the stock did against the S&P 500 from that month end. After the 4 buying crowds with six months of prices, it averaged −26.8% against the index. After 4 selling crowds, −23.5%. One company's history is too short to judge by; the test across every company is the better guide.

MonthCrowd3 months on, vs S&P 5006 months12 months
September 30, 20262 buyingnot yetnot yetnot yet
May 31, 20232 buying−11.1%−23.1%−55.9%
December 29, 20173 selling−20.9%−42.1%−47.1%
May 29, 20153 selling−46.6%−61.4%−41.6%
December 31, 20142 buying+10.1%+3.5%−39.9%
February 28, 20143 selling−15.4%−13.7%−17.5%
August 31, 20113 buying−19.1%−31.6%−81.3%
March 31, 20114 buying−18.3%−55.8%−75.4%
September 30, 20107 selling+31.7%+23.2%−57.9%

Colours show whether the crowd was right: green when buyers were followed by a rise above the index, or sellers by a fall below it. Total returns from the month end; past patterns are not a forecast.

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