Investor Tyndall Capital Partners L P
13D/G Filings

This page shows a list of all the recent 13D/G filings made by Tyndall Capital Partners 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 CYCN / Cyclerion Therapeutics, Inc. 164,777 155,187
2025-05-15 13G/A CYCN / Cyclerion Therapeutics, Inc. 164,429 164,777
2024-02-14 13G/A CYCN / Cyclerion Therapeutics, Inc. 121,638 164,429
2023-09-05 13G CYCN / Cyclerion Therapeutics, Inc. 121,638
2020-02-14 13G/A ONTX / Onconova Therapeutics, Inc. 499,041 26,042
2019-11-18 13G/A ONTX / Onconova Therapeutics, Inc. 842,314 499,041
2019-02-25 13G/A ONTX / Onconova Therapeutics, Inc. 1,387,646 842,314
2018-02-14 13G/A ONTX / Onconova Therapeutics, Inc. 911,456 1,387,646
2016-08-18 13G ONTX / Onconova Therapeutics, Inc. 911,456
2016-08-17 13G ONTX / Onconova Therapeutics, Inc.
2015-02-17 13G/A OTTW / Ottawa Bancorp, Inc. 130,237
2013-02-14 13G/A OTTW / Ottawa Bancorp, Inc. 129,237
2012-02-14 13G/A WAYN / Wayne Savings Bancshares, Inc. 64,720
2012-02-14 13G/A OTTW / Ottawa Bancorp, Inc. 129,311
2012-02-14 13G/A FFNW / First Financial Northwest, Inc. 373,168
2012-02-14 13G/A MYRX / Myrexis, Inc. 0
2012-02-14 13G/A EBMT / Eagle Bancorp Montana, Inc. 119,790