An OTC company can buy back up to 25% of the average daily trading volume (ADTV) of its shares, calculated over the previous four weeks. This limit applies unless the company makes a single large "block purchase" in a week, in which case it is exempt from the daily 25% volume limit for that specific day, provided no other repurchases occur that day. Other restrictions include buying at an acceptable price and using a single broker for daily transactions.
Daily share buyback volume limit: A company cannot purchase more than 25% of the ADTV over the preceding four weeks.
Block purchase exception: Once per week, a company can make a single "block" purchase that is exempt from the 25% ADTV volume limit. However, it cannot make any other repurchases on that same day.
Timing: A company cannot trade during the last 30 minutes of the trading day if its ADTV is above \(\$1\) million and public float is above \(\$150\) million. Smaller companies have a 10-minute restriction.
Price: The repurchase price cannot exceed the highest independent bid or the last independent transaction price at the time of purchase.
Manner: The company must purchase shares through a single broker or dealer on any given day to ensure good faith and prevent market manipulation.