Dirk A. Kempthorne

Companies

• Robert HalfBoard member Jan 7, 2019 to now¹
• Olympic SteelBoard member Aug 4, 2010 to now²
• FMC CorporationBoard member Jul 20, 2009 to now³

Holdings

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

Shares held

• Robert Half RHI11,712 shares⁴$385.0K at $32.87Oct 28, 2025
• FMC Corporation FMC56,912 shares⁵$299.4K at $5.26Apr 16, 2026
• OSOlympic Steel ZEUS0 shares⁶Feb 13, 2026

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

Recent filings

• Apr 16, 2026Granted 202 shares of FMC Corporation⁵
• Feb 13, 2026Returned to company 5,231 shares of Olympic Steel⁶
• Jan 15, 2026Granted 250 shares of FMC Corporation⁷
• Dec 31, 2025Shares withheld for tax 73 shares at $13.98 of FMC Corporation⁸
• Oct 28, 2025Sold 6,505 shares at $28.87 of Robert Half⁴
• Oct 16, 2025Granted 773 shares of FMC Corporation⁹
• Jul 17, 2025Granted 614 shares of FMC Corporation¹⁰
• May 14, 2025Granted 5,907 shares of Robert Half¹¹
• Apr 29, 2025Granted 3,355 shares of FMC Corporation¹²
• Apr 17, 2025Granted 567 shares of FMC Corporation¹³
• Mar 11, 2025Granted 3,556 shares of Olympic Steel¹⁴
• Jan 16, 2025Granted 487 shares of FMC Corporation¹⁵
• Nov 26, 2024Sold 1,032 shares at $74.35 of Robert Half¹⁶
• Oct 17, 2024Granted 356 shares of FMC Corporation¹⁷
• Aug 1, 2024Sold 1,300 shares at $63.09 of Robert Half¹⁸
• Jul 18, 2024Granted 404 shares of FMC Corporation¹⁹
• May 15, 2024Granted 3,929 shares of Robert Half²⁰
• May 8, 2024Sold 2,221 shares at $69.66 of Robert Half²¹
• Apr 30, 2024Granted 2,373 shares of FMC Corporation²²
• Apr 18, 2024Granted 351 shares of FMC Corporation²³
• Mar 12, 2024Granted 1,675 shares of Olympic Steel²⁴
• Jan 18, 2024Granted 351 shares of FMC Corporation²⁵
• Oct 19, 2023Granted 328 shares of FMC Corporation²⁶
• Aug 8, 2023Sold 2,050 shares at $74.15 of Robert Half²⁷
• Jul 20, 2023Granted 210 shares of FMC Corporation²⁸