(Reuters) - California State Teachers Retirement System (CalSTRS) will vote against Tesla CEO Elon Musk's $56 billion pay package, the pension fund's chief investment officer told CNBC on Monday.

Norway's $1.7 trillion sovereign wealth fund said on Saturday it would vote against ratifying Musk's compensation package, which is up for a shareholder vote on Thursday after a Delaware judge invalidated it earlier this year.

CalSTRS did not immediately respond to a Reuters request for comment.

Tesla is also proposing to reincorporate in Texas instead of Delaware and re-elect two directors, including Musk's brother, Kimbal.

(Reporting by Akash Sriram in Bengaluru; Editing by Anil D'Silva)