"Sale", "sell", "offer to sell", or "offer for sale" includes every contract of sale or disposition of, attempt or offer to dispose of, or solicitation of an offer to buy, a security or interest in a security, for value. Any security given or delivered with, or as a bonus on account of, any purchase of securities or any other thing, shall be conclusively presumed to constitute a part of the subject of such purchase and to have been sold for value.