As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A/C WAS ENROUTE TO TEB AT FL290, WINDSHIELD ANTI-ICE WAS SELECTED FOR 1HOUR WHEN A LOUD CRACK WAS HEARD AND THE PILOTS WINSHIELD SHATTERED THE INNER PANE INTO PEA SIZED PIECES. CREW FOLLOWED AIRCRAFT ABNORMAL PROCEDURES AND DESCENDED BELOW 25,000 FEET AND KEEP CABIN PSI BETWEEN 2 AND 4 PSI. TEMP AT ALTITUDE WAS -39C. AIRCRAFT WAS FLOWN TO TEB AND REPAIRED