The puts obliged Berkshire to pay its unnamed counterparty at the end of the contact period, in this case between 2021 and 2026, if certain equity indexes such as the S&P 500 declined over the course of the contract. (fortune.com)
That might not even happen during the course of the contract though. (sbnation.com)
Arsenal have agreed a club - record deal with Lyon which could rise to # 52m over the course of his contract. (justarsenal.com)