DeFi Development Corp. announced it added approximately 101,381 SOL to its treasury between September 14 and 18, 2026, bringing total holdings to 2,490,304 SOL and equivalents, a 4% increase. The company also reported the closing of R.F. Lafferty & Co.'s over-allotment option for its Variable Rate Series C Perpetual Preferred Stock (CHAD), generating $1.65 million in gross proceeds from 206,250 additional shares. DeFi Development Corp. operates as a publicly traded company with a treasury strategy focused on accumulating and compounding Solana assets while providing investors with economic exposure to the cryptocurrency ecosystem.