On May 28, 2026, Marian Walters, Director at Eos Energy Enterprises (NASDAQ:EOSE), exercised 30,000 stock options and immediately sold the resulting common shares, as detailed in the SEC Form 4 filing. Transaction value based on SEC Form 4 weighted average purchase price ($9.18); post-transaction value based on May 28, 2026 market close ($9.18). What was the structure and rationale for this transaction?