I got divorced mid-2022. I owned shares & received dividends for Q1 2022 but shares were split in 1/2 with Ex mid year. How do I treat Q1 dividends?

My tax statement for dividends included 100% for Q1 even though 1/2 of these shares were transferred to ex- in June.    I have the same question for my pension which she had 1/2 of via the checkbook transfer prior to official June divorce and separate payments sent to each marital partner.