unclaimed dividends

Dividend checks were mailed to an old address between November 2013 and Nov 2019 in California. I was sent  notices for each dividend check (19 total) from the California State Controller's office all the notices arrived the at the same time in 2024. Long story short I called Computershare who was holding the funds and they issued me a check for the total amount. Now I am tying to get a 1099div which is proving difficult.                                        Question 1: do I need include this on my 2024 income? Pretty sure I do....                                                                      Question 2: do I need a 1099 div or W-2                                                                                                                                Question 3: I now live in Washington state where I first found out about the funds and received the check. Do I need to pay taxes in California?