Brian C. Witherow

Companies

• Six FlagsChief financial officer Jul 1, 2024 to Jun 17, 2026¹
• Cedar FairChief financial officer Feb 13, 2012 to Jul 1, 2024²
• Strata Critical Medical, Inc.Board member Sep 12, 2019 to Sep 12, 2019³
• Cedar FairV.P. & Corp. Controller Feb 10, 2006 to Nov 14, 2011⁴

Holdings

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

Shares held

• Six Flags FUN300,164 shares⁵$2.5M at $8.43Feb 25, 2026

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

Recent filings

• Feb 23, 2026Shares withheld for tax 16,469 shares at $18.24 of Six Flags⁵
• Jun 4, 2025Shares withheld for tax 11,245 shares at $33.11 of Six Flags⁶
• Mar 31, 2025Shares withheld for tax 1,543 shares at $35.42 of Six Flags⁷
• Feb 24, 2025Shares withheld for tax 29,528 shares at $45.09 of Six Flags⁸
• Feb 5, 2025Granted 18,729 shares of Six Flags⁹
• Dec 4, 2024Shares withheld for tax 11,245 shares at $47.21 of Six Flags¹⁰
• Jul 1, 2024Returned to company 2,399 shares of CIK 811532¹¹
• Jul 1, 2024Returned to company 188,249 shares of CIK 811532¹¹
• Mar 28, 2024Granted 10,490 shares of CIK 811532¹²
• Feb 26, 2024Shares withheld for tax 4,985 shares at $39.24 of CIK 811532¹³
• Feb 26, 2024Granted 11,239 shares of CIK 811532¹³
• Feb 26, 2024Shares withheld for tax 4,014 shares at $39.24 of CIK 811532¹³
• Feb 27, 2023Shares withheld for tax 3,659 shares at $46.30 of CIK 811532¹⁴
• Feb 20, 2023Shares withheld for tax 24,548 shares at $44.95 of CIK 811532¹⁵
• Feb 20, 2023Exercised options 27,092 shares at $36.95 of CIK 811532¹⁵
• Feb 9, 2023Granted 10,028 shares of CIK 811532¹⁶
• Mar 21, 2022Shares withheld for tax 13,226 shares at $55.86 of CIK 811532¹⁷
• Mar 21, 2022Exercised options 17,786 shares at $29.53 of CIK 811532¹⁷
• Feb 28, 2022Shares withheld for tax 5,996 shares at $57.07 of CIK 811532¹⁸
• Feb 28, 2022Shares withheld for tax 3,619 shares at $57.07 of CIK 811532¹⁸
• Feb 23, 2022Granted 7,444 shares of CIK 811532¹⁹