When must an Amendment to Schedule 13G be filed?

An Amendment to Schedule 13G must be filed within 45 days of year-end if there are changes in ownership. This is a requirement set forth by the SEC to ensure that significant shareholders disclose any alterations in their ownership stakes. Schedule 13G is a filing used by certain investors who qualify as passive investors under the Securities Exchange Act, and it allows for simplified reporting compared to Schedule 13D.

The 45-day timeline ensures that the market remains informed of recent developments regarding ownership changes within a reasonable timeframe. If a passive investor's ownership level rises to a level that necessitates filing an amendment, or if they become aware of any changes that might impact their reporting status, they must comply with this timeline to maintain regulatory transparency.

In contrast, other timelines outlined in the other options reflect misconceptions about the requirements for filing amendments to Scheme 13G. For example, while the initial filing of Schedule 13G has specific deadlines, amendments reflect ownership changes rather than a fixed annual filing regardless of ownership changes. Thus, the focus is on the change in ownership and the subsequent need for timely transparency.