Waaree Energies Limited, promoter of Indosolar, is selling 61,00,000 shares (15% stake) through an OFS on NSE and BSE at a floor price of ₹500 per share. Non-retail bidding opens on September 18, 2025, while retail opens on September 19. 25% of shares are reserved for mutual funds/insurance firms, and 10% for retail investors.