SHAREHOLDER INVESTIGATION: Halper Sadeh LLC Investigates ALTR, SASR, AUB, CYTH on Behalf of Shareholders PR Newswire NEW YORK, Dec. 23, 2024 NEW YORK , Dec. 23, 2024 /PRNewswire/ -- Halper Sadeh LLC, an investor rights law firm, is investigating the following companies for potential violations of the federal securities laws and/or breaches of fiduciary duties to shareholders relating to: Altair Engineering Inc. (NASDAQ: ALTR)'s sale to Siemens for $113.00 per share in cash. If you are an Altair...