undamentalytics Newsletter

Trimas Corp insider trading

Every open-market purchase and sale by Trimas Corp'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.
Trimas Corp 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 Trimas Corp’s insiders pay?

From March 8, 2010 to May 7, 2026, 27 insiders reported 37 open-market purchases and 149 sales not made under a pre-set plan in Trimas Corp. Twelve months after each purchase was reported, the shares were +22.5% against the S&P 500 on average (median +9.7%), over 36 purchases with a full year of prices; 64% beat the index. After sales, the shares moved −5.7% 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 9, 2010 into $87,695 by November 2, 2026, +13.9% a year. It held shares 58% of the time; the S&P 500 on those same days, with Treasury bills otherwise, made $55,078 (+10.8% a year), and held throughout $88,779 (+14.0%).

$0$50.0k$100k 201020122014201620182020202220242026 $88.8k$87.7k$55.1k
Copying Trimas Corp's insidersS&P 500, same days investedS&P 500, held throughout $10,000 copying every open-market purchase by Trimas Corp's insiders from March 9, 2010, before costs and taxes, marked weekly. Uninvested money earns the Treasury bill rate; the portfolio held shares 58% of the time.
Trimas Corp: each insider's record
InsiderRolePurchases12 months after their purchasesBeat the S&P 500Sales12 months after their salesLatest report
Zalupski Robert J Chief Financial Officer 1 −4.0% (1) 0% 25 +6.5% (25) March 11, 2021
Sherbin Joshua A Senior Vice Pres & Gen Counsel 0 — — 20 −10.9% (20) March 8, 2021
Brooks Lynn A President - Packaging Systems 1 +6.8% (1) 100% 17 −6.5% (17) May 28, 2014
Valenti Samuel III Chairman 0 — — 14 −5.3% (14) March 13, 2023
Amato Thomas A President and CEO 7 +5.3% (7) 71% 5 −21.0% (5) November 18, 2024
Swart Paul Chief Accounting Officer 1 −0.3% (1) 0% 11 −13.1% (11) July 31, 2023
Tredwell Daniel P Director 3 +12.3% (3) 67% 9 −24.1% (9) March 3, 2025
Zeffiro A Mark Executive Vice President & CFO 2 +129.6% (2) 100% 8 −9.5% (8) May 2, 2014
Mell Scott A Chief Financial Officer 0 — — 9 −11.0% (9) March 7, 2025
Benson Thomas M President Cequent Performance 0 — — 7 −13.6% (7) November 5, 2014
Heartland Industrial Associates LLC 10% owner 0 — — 7 +34.8% (7) March 1, 2013
Parker Herbert K Director 4 +3.3% (4) 25% 2 −13.8% (2) March 3, 2025
Fielkow Jeffrey A Director 5 +12.5% (4) 50% 0 — November 12, 2025
Gougarty Nancy Director 0 — — 4 −5.4% (4) May 21, 2019
Cohen Marshall A Director 0 — — 3 −21.3% (3) November 27, 2015
Finley Teresa Director 3 +11.2% (3) 33% 0 — March 3, 2025
Sedaghat Shawn Director 3 +30.4% (3) 100% 0 — May 21, 2025
Wathen David M President and CEO 1 +163.6% (1) 100% 2 −16.1% (2) July 31, 2013
Boehne Holly M Director 2 +22.4% (2) 100% 0 — March 6, 2025
Greene Jeffrey M Director 0 — — 2 −16.4% (2) May 3, 2024
Trend International Holding AG Director 2 +32.7% (2) 100% 0 — May 23, 2025
Hip Investment Holdings I, LLC 10% owner 0 — — 1 +111.8% (1) May 19, 2010
Miller Eugene A Director 0 — — 1 −31.8% (1) May 21, 2019
Robin Jodi F. General Counsel and Secretary 0 — — 1 — May 7, 2026
Salik Fabio Leandro Matheus President, TriMas Packaging 1 −15.1% (1) 0% 0 — October 31, 2022
Schaefer John Philip President, TriMas Aerospace 0 — — 1 −15.8% (1) June 9, 2022
Shapira Adrianne Director 1 +29.1% (1) 100% 0 — June 6, 2025

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 Trimas Corp

Months when 2 or more insiders became net buyers, or 3 or more net sellers, of Trimas Corp 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 6 buying crowds with six months of prices, it averaged +11.3% against the index. After 12 selling crowds, +4.2%. 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
March 31, 20256 buying+13.4%+45.6%+37.4%
March 28, 20242 buying−8.6%−14.0%−20.3%
November 30, 20223 buying+11.2%−7.9%−18.7%
March 31, 20216 selling−8.3%−6.7%−11.4%
May 29, 20202 buying−6.1%−1.0%−3.2%
November 29, 20194 selling−9.8%−23.4%−31.1%
May 31, 20196 selling−4.4%−6.6%−32.5%
May 31, 20183 selling+1.4%−1.1%−1.3%
November 30, 20173 selling−5.0%+8.4%+6.2%
August 31, 20153 buying+12.5%−11.1%−5.1%
May 30, 20147 selling−14.0%−17.7%−28.2%
November 29, 20134 selling−12.0%−12.3%−31.0%

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. Latest 12 of 18. Total returns from the month end; past patterns are not a forecast.

← Back to Trimas Corp · Funds · Politicians