31 Pa. Code § 27.3
(a) An insurer shall file a statement disclosing an acquisition of assets or disposition of assets if the following apply:
(b) Statements of material acquisitions or dispositions of assets as required under subsection (a) shall include the following information:
(e) An insurer shall file a statement disclosing a material acquisition or disposition of assets consisting of a series of related transactions as required under subsection (a) within 30 days after the closing date of any transaction within a 30-day period that results in the aggregate of related transactions within that period involving more than 5% of the reporting insurer’s total admitted assets as reported in that insurer’s most recent annual statutory financial statement filed with the Department. For example:

Filing 1 shall be made within 30 days of January 21.
Filing 2 shall be made within 30 days of February 8.