Arkolith/Insider Trading/ECG

ECG Insider Trading

ECG · full profile →Last filing May 29, 2026
Mixed · 180d
Open-Market Buys (180d)
$0
0 insiders
Open-Market Sells (180d)
$0
0 insiders
Net Insider Flow
$0
open market, 180d
Reporting Insiders
0
0 P/S transactions
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Build on these Form 4 transactions

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Recent Form 4 Transactions

71 shown
DateInsiderRoleActionSharesPriceValue
May 29, 2026Ryan Edward ADirectorGrant(A)100$154.72$15K
May 29, 2026Rosenthal DaleDirectorGrant(A)169$154.72$26K
May 22, 2026Sznewajs Timothy RyanVP of Corp. Dev. & StrategyTax withholding(F)1K$148.65$202K
May 12, 2026Della Rocca MichaelDirectorGrant(A)1K—$0
May 12, 2026Rosenthal DaleDirectorGrant(A)1K—$0
May 12, 2026Hernandez Helena MercedesDirectorGrant(A)1K—$0
May 12, 2026Ryan Edward ADirectorGrant(A)1K—$0
May 12, 2026Sparby David MDirectorGrant(A)1K—$0
May 12, 2026Wood Clark A.DirectorGrant(A)1K—$0
May 12, 2026Wynn Betty R.DirectorGrant(A)1K—$0
Feb 27, 2026Rosenthal DaleDirectorGrant(A)125$104.90$13K
Feb 27, 2026Behring Jason A.VP of TechnologyTax withholding(F)205$120.87$25K
Feb 27, 2026Behring Jason A.VP of TechnologyGrant(A)934—$0
Feb 27, 2026Thiede Jeffrey SPresident & CEO, DirectorTax withholding(F)2K$120.87$259K
Feb 27, 2026Thiede Jeffrey SPresident & CEO, DirectorGrant(A)12K—$0
Feb 27, 2026Thiede Jeffrey SPresident & CEO, DirectorTax withholding(F)10K$120.87$1.2M
Feb 27, 2026Hunke Jon B.VP & CAOTax withholding(F)161$120.87$19K
Feb 27, 2026Hunke Jon B.VP & CAOTax withholding(F)1K$120.87$157K
Feb 27, 2026Hunke Jon B.VP & CAOGrant(A)929—$0
Feb 27, 2026Hendricks Britney A.VP of Human ResourcesTax withholding(F)290$120.87$35K
Feb 27, 2026Hendricks Britney A.VP of Human ResourcesGrant(A)2K—$0
Feb 27, 2026Sznewajs Timothy RyanVP of Corp. Dev. & StrategyTax withholding(F)303$120.87$37K
Feb 27, 2026Sznewajs Timothy RyanVP of Corp. Dev. & StrategyGrant(A)1K—$0
Feb 27, 2026Sanderson Paul R.VP, CLO & Corporate SecretaryTax withholding(F)417$120.87$50K
Feb 27, 2026Sanderson Paul R.VP, CLO & Corporate SecretaryTax withholding(F)4K$120.87$456K
Feb 27, 2026Sanderson Paul R.VP, CLO & Corporate SecretaryGrant(A)2K—$0
Feb 27, 2026Marcy Maximillian JVP, CFO & TreasurerGrant(A)3K—$0
Feb 27, 2026Marcy Maximillian JVP, CFO & TreasurerTax withholding(F)572$120.87$69K
Feb 27, 2026Nosbusch Thomas D.EVP & COOGrant(A)4K—$0
Feb 27, 2026Nosbusch Thomas D.EVP & COOTax withholding(F)719$120.87$87K
Feb 27, 2026Nosbusch Thomas D.EVP & COOTax withholding(F)2K$120.87$247K
Dec 8, 2025Hernandez Helena MercedesDirectorBuy(P)250$92.18$23K
Nov 28, 2025Rosenthal DaleDirectorGrant(A)144$90.87$13K
Aug 21, 2025Hernandez Helena MercedesDirectorGrant(A)2K—$0
Jun 30, 2025Rosenthal DaleDirectorGrant(A)216$60.71$13K
May 22, 2025Della Rocca MichaelDirectorGrant(A)1K—$0
May 22, 2025Della Rocca MichaelDirectorGrant(A)3K—$0
May 22, 2025Rosenthal DaleDirectorGrant(A)1K—$0
May 22, 2025Rosenthal DaleDirectorGrant(A)3K—$0
May 22, 2025Ryan Edward ADirectorGrant(A)3K—$0
May 22, 2025Ryan Edward ADirectorGrant(A)1K—$0
May 22, 2025Wood Clark A.DirectorGrant(A)3K—$0
May 22, 2025Wood Clark A.DirectorGrant(A)1K—$0
May 22, 2025Sparby David MDirectorGrant(A)1K—$0
May 22, 2025Sparby David MDirectorGrant(A)3K—$0
May 22, 2025Sznewajs Timothy RyanVP of Corp. Dev. & StrategyGrant(A)2K—$0
May 22, 2025Sznewajs Timothy RyanVP of Corp. Dev. & StrategyGrant(A)11K—$0
May 22, 2025Wynn Betty R.DirectorGrant(A)3K—$0
May 22, 2025Wynn Betty R.DirectorGrant(A)1K—$0
Mar 31, 2025Rosenthal DaleDirectorGrant(A)353$37.09$13K
Mar 13, 2025Hendricks Britney A.VP of Human ResourcesDiscretionary(I)293$38.67$11K
Feb 25, 2025Ryan Edward ADirectorBuy(P)1K$38.03$53K
Feb 25, 2025Marcy Maximillian JVP, CFO & TreasurerBuy(P)1K$39.00$51K
Feb 20, 2025Behring Jason A.VP of TechnologyGrant(A)1K—$0
Feb 20, 2025Thiede Jeffrey SPresident & CEO, DirectorTax withholding(F)8K$46.54$391K
Feb 20, 2025Thiede Jeffrey SPresident & CEO, DirectorGrant(A)16K—$0
Feb 20, 2025Nosbusch Thomas D.EVP & COOTax withholding(F)2K$46.54$88K
Feb 20, 2025Nosbusch Thomas D.EVP & COOGrant(A)5K—$0
Feb 20, 2025Hunke Jon B.VP & CAOGrant(A)1K—$0
Feb 20, 2025Hunke Jon B.VP & CAOTax withholding(F)1K$46.54$59K
Feb 20, 2025Sanderson Paul R.VP, CLO & Corporate Secretary, DirectorGrant(A)3K—$0
Feb 20, 2025Henricks Britney A.VP of Human ResourcesGrant(A)2K—$0
Feb 20, 2025Marcy Maximillian JVP, CFO & TreasurerGrant(A)4K—$0
Feb 18, 2025Della Rocca MichaelDirectorBuy(P)1K$47.57$50K
Nov 25, 2024Della Rocca MichaelDirectorGrant(A)977—$0
Nov 25, 2024Rosenthal DaleDirectorGrant(A)2K—$0
Nov 25, 2024Ryan Edward ADirectorGrant(A)2K—$0
Nov 25, 2024Sparby David MDirectorGrant(A)2K—$0
Nov 25, 2024Wood Clark A.DirectorGrant(A)391—$0
Nov 25, 2024Wynn Betty R.DirectorGrant(A)391—$0
Oct 31, 2024Mdu Resources Group Inc10% OwnerOther(J)51.0M—$0

Data Source

Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.

Coverage: Form 4 filings indexed 2021-03-29 → 2026-07-14. Earlier history is backfilling; this window widens as it deepens.

Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).