Ronald J. Mittelstaedt

Companies

• Waste ConnectionsPresident May 12, 2023 to now¹
• Waste ConnectionsBoard member Jun 3, 2016 to now²
• SkyWest, Inc.Board member Oct 9, 2013 to now³
• Waste ConnectionsChair Feb 13, 2020 to Feb 22, 2023⁴
• Waste ConnectionsChief executive officer Jun 3, 2016 to Feb 13, 2020²

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• Waste Connections WCN301,017 shares⁵$50.5M at $167.73May 12, 2026
• SkyWest, Inc. SKYW8,257 shares⁶$745.4K at $90.27May 5, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• May 12, 2026Bought 50,000 shares at $152.24 of Waste Connections⁵
• May 5, 2026Granted 1,219 shares of SkyWest, Inc.⁶
• Feb 18, 2026Shares withheld for tax 346 shares at $162.76 of Waste Connections⁷
• Feb 18, 2026Exercised options 878 shares of Waste Connections⁷
• Feb 17, 2026Shares withheld for tax 181 shares at $161.28 of Waste Connections⁸
• Feb 17, 2026Exercised options 459 shares of Waste Connections⁸
• Feb 17, 2026Shares withheld for tax 764 shares at $161.28 of Waste Connections⁸
• Feb 17, 2026Exercised options 1,941 shares of Waste Connections⁸
• Feb 17, 2026Shares withheld for tax 4,264 shares at $161.28 of Waste Connections⁸
• Feb 17, 2026Exercised options 10,834 shares of Waste Connections⁸
• Feb 17, 2026Shares withheld for tax 1,008 shares at $161.28 of Waste Connections⁸
• Feb 17, 2026Exercised options 2,561 shares of Waste Connections⁸
• Feb 16, 2026Shares withheld for tax 815 shares at $160.26 of Waste Connections⁸
• Feb 16, 2026Exercised options 3,112 shares of Waste Connections⁸
• Feb 14, 2026Shares withheld for tax 854 shares at $160.26 of Waste Connections⁸
• Feb 14, 2026Exercised options 3,505 shares of Waste Connections⁸
• Dec 29, 2025Gift 5,500 shares of SkyWest, Inc.⁹
• May 6, 2025Granted 1,255 shares of SkyWest, Inc.¹⁰
• Feb 19, 2025Shares withheld for tax 420 shares at $187.82 of Waste Connections¹¹
• Feb 19, 2025Exercised options 1,067 shares of Waste Connections¹¹
• Feb 18, 2025Shares withheld for tax 1,535 shares at $187.65 of Waste Connections¹²
• Feb 18, 2025Exercised options 3,990 shares of Waste Connections¹²
• Feb 18, 2025Shares withheld for tax 346 shares at $187.65 of Waste Connections¹²
• Feb 18, 2025Exercised options 878 shares of Waste Connections¹²
• Feb 17, 2025Shares withheld for tax 473 shares at $189.04 of Waste Connections¹²