Halper Sadeh LLC is investigating whether certain officers and directors of Zeta Global Holdings Corp. breached fiduciary duties to shareholders. Long-term shareholders who currently own Zeta stock may be able to seek corporate governance reforms, the return of funds to the company, a court-approved financial incentive award, or other relief and benefits. The firm said it will discuss legal rights and options without cost or obligation and would handle any matter on a contingent-fee basis, without out-of-pocket legal fees or expenses. Shareholders were urged to contact the firm promptly because the time to enforce their rights may be limited.