Under the Texas Business Organizations Code, an LLC's company agreement may expand, restrict or eliminate the fiduciary duties of its members, managers and officers. A limited partnership agreement can eliminate the duties of loyalty and care if it does so expressly. A general partnership agreement can define the partners' duties but can't eliminate them.
Texas law also lets listed corporations, and electing corporations above a set number of shareholders, require a minimum ownership stake before a shareholder files a derivative suit. Most privately held companies are outside those rules, so their governing documents and the general rules on derivative suits still control.
In defending an insider, we start with what duties the documents imposed, whether disinterested owners or directors approved the transaction, and whether the claim was filed in time.