William Francis Ballhaus Jr.

Companies

• OSI SystemsBoard member May 11, 2010 to now¹

Holdings

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

Shares held

• OSOSI Systems OSIS29,475 shares²$5.7M at $194.40Jul 21, 2026

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

Recent filings

• Jul 20, 2026Granted 924 shares at $216.65 of OSI Systems²
• Nov 4, 2025Gift 750 shares of OSI Systems³
• Sep 12, 2025Sold 562 shares at $237.84 of OSI Systems⁴
• Aug 20, 2025Granted 1,007 shares at $223.39 of OSI Systems⁵
• Aug 20, 2025Granted 1,007 shares at $223.39 of OSI Systems⁶
• Aug 20, 2025Granted 1,007 shares at $223.39 of OSI Systems⁷
• Jul 9, 2025Gift 113 shares of OSI Systems⁸
• May 21, 2025Sold 750 shares at $228.88 of OSI Systems⁹
• May 6, 2025Sold 933 shares at $219.77 of OSI Systems¹⁰
• Feb 10, 2025Gift 750 shares of OSI Systems¹¹
• Dec 10, 2024Gift 28 shares of OSI Systems¹²
• Dec 10, 2024Sold 675 shares at $181.63 of OSI Systems¹²
• Dec 4, 2024Gift 120 shares of OSI Systems¹³
• Nov 13, 2024Gift 875 shares of OSI Systems¹⁴
• Aug 14, 2024Granted 1,618 shares at $139.02 of OSI Systems¹⁵
• Jul 3, 2024Gift 73 shares of OSI Systems¹⁶
• May 21, 2024Gift 73 shares of OSI Systems¹⁶
• May 21, 2024Gift 73 shares of OSI Systems¹⁶
• May 8, 2024Sold 675 shares at $133.98 of OSI Systems¹⁷
• Jul 28, 2023Granted 1,913 shares at $117.63 of OSI Systems¹⁸
• Jun 14, 2023Sold 1,025 shares at $125.72 of OSI Systems¹⁹
• Jun 8, 2023Gift 622 shares of OSI Systems²⁰
• Feb 1, 2023Sold 400 shares at $94.96 of OSI Systems²¹
• Aug 16, 2022Gift 744 shares of OSI Systems²²
• Jul 6, 2022Granted 2,590 shares of OSI Systems²³