dollar tree inc dltr announced a checklist of new corporate governance guidelines on wednesday including one that will allow stockholders with 15 or more of the companys common stock to call special meetings theres also a new timeframe for shareholder nominations of directors and proposals of business no earlier than 120 days and no later than 90 days before the anniversary of the prior years annual meeting director candidates must not serve on more than four other corporate boards under the new rules unless the candidate is chief executive then they shouldnt serve on more than two others there are also updates to various committees dollar tree unveiled a new board last month soon after fourthquarter results the discount retailer plans to file an sec proxy statement as part of its 2022 annual shareholders meeting dollar tree stock has run up 324 over the last year