Investor SAIF Partners IV L.P.
13D/G Filings

This page shows a list of all the recent 13D/G filings made by SAIF Partners IV L.P. . Schedule 13D is commonly referred to as a “beneficial ownership report.” The term "beneficial owner" is defined under SEC rules. It includes any person who directly or indirectly shares voting power or investment power (the power to sell the security).

When a person or group of persons acquires beneficial ownership of more than 5% of a voting class of a company’s equity securities, they are required to file a Schedule 13D within ten days after the purchase. Click the link icon to see the full transaction history.

Date Form Target Prev
Shares
Current
Shares
Change
(Percent)
Ownership
(Percent)
Change
(Percent)
2025-08-14 13G/A AMPX / Amprius Technologies, Inc. 7,608,537 0
2025-07-14 13D/A SVA / Sinovac Biotech, Ltd. 10,780,820 10,780,820
2025-06-17 13D/A SVA / Sinovac Biotech, Ltd. 10,780,820 10,780,820
2025-05-23 13D/A SVA / Sinovac Biotech, Ltd. 10,780,820 10,780,820
2025-05-15 13G/A AMPX / Amprius Technologies, Inc. 8,012,673 7,608,537
2025-04-29 13D/A SVA / Sinovac Biotech, Ltd. 10,780,820 10,780,820
2025-03-19 13D/A SVA / Sinovac Biotech, Ltd. 10,780,820 10,780,820
2025-02-19 13D/A SVA / Sinovac Biotech, Ltd. 10,780,820 10,780,820
2024-10-28 13G AMPX / Amprius Technologies, Inc. 8,012,673
2024-09-12 13D/A SVA / Sinovac Biotech, Ltd. 10,780,820 10,780,820
2024-06-17 13D/A SVA / Sinovac Biotech, Ltd. 10,780,820 10,780,820
2023-12-04 13D/A SVA / Sinovac Biotech, Ltd. 10,780,820 10,780,820
2023-09-15 13D/A SVA / Sinovac Biotech, Ltd. 10,780,820 10,780,820
2023-05-25 13D/A SVA / Sinovac Biotech, Ltd. 10,780,820 10,780,820
2023-03-15 13D/A SVA / Sinovac Biotech, Ltd. 10,780,820 10,780,820
2022-12-12 13D/A SVA / Sinovac Biotech, Ltd. 10,780,820 10,780,820
2017-06-27 13D/A SVA / Sinovac Biotech, Ltd. 10,780,820 10,780,820
2016-04-11 13D/A BONA / Bona Film Group Limited 2,352,605 0
2016-02-19 13D BONA / Bona Film Group Limited 2,352,605
2016-02-02 13D/A SVA / Sinovac Biotech, Ltd. 10,780,820
2014-01-22 13G/A BONA / Bona Film Group Limited 4,705,210
2013-01-25 13G/A BONA / Bona Film Group Limited 3,417,508
2012-07-25 13G BONA / Bona Film Group Limited 3,248,373