Security key
23255M204
Cyclerion Therapeutics, Inc. - Common Stock, no par value (CYCN)
CUSIP: 23255M204
Q1 2026 13F Holders as of 31 Mar 2026
- Security type / class
- Equity / Common Stock, no par value
- Total 13F shares
- 161,922
- Total 13F value
- $249,026
- Share change
- -134,333
- SEC-reported price per share
- $1.55
- Number of holders
- 17
- Value change
- -$153,367
- Number of buys
- 5
- Number of sells
- 7
- Shares outstanding
- 4,691,959
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2026
Institutions
17
Top holders
10
CYCN full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q2 2026
Previous quarter: Q4 2025
Cyclerion Therapeutics, Inc. SEC filings
Cyclerion Therapeutics, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 23255M204
Recent filing periods:
Ownership snapshot
Top reported holders of CYCN - Cyclerion Therapeutics, Inc. - Common Stock, no par value (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
J. WOOD CAPITAL ADVISORS LLC
Disclosed value leader
J. WOOD CAPITAL ADVISORS LLC
Comparable rows
15/15
Latest evidence
31 Dec 2025
13D/G
13F
Lead comparable stake: 5.4%
13D/G row: J. WOOD CAPITAL ADVISORS LLC
Showing 1-6 of 15 holder rows.
Quick read
J. WOOD CAPITAL ADVISORS LLC leads the comparable SEC ownership view at 5.4%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens J. WOOD CAPITAL ADVISORS LLC's linked filing trail.
Comparable ownership
Top 5
J. WOOD CAPITAL ADVISORS LLC
5.4%
American Endowment Foundation
4.9%
TYNDALL CAPITAL PARTNERS L P
4.8%
FMR LLC
0.2%
Siren, L.L.C.
2.5%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| J. WOOD CAPITAL ADVISORS LLC |
13D/G
|
5.4%
|
$496,363
181,818 shares
|
$0 | 25 Mar 2025 |
| American Endowment Foundation |
13D/G
|
4.9%
|
$492,196
133,026 shares
|
$0 | 31 Dec 2024 |
| TYNDALL CAPITAL PARTNERS L P |
13D/G
|
4.8%
|
$487,287
155,187 shares
|
-$30,113 | 30 Jun 2025 |
| FMR LLC |
13D/G
13F
Company
|
0.2%
|
$17,538
4,740 shares
|
$0 | 31 Dec 2024 |
| Siren, L.L.C. |
13F
Individual
|
2.5%
|
$146,816
115,603 shares
|
— | 31 Dec 2025 |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
Company
|
0.92%
|
$55,006
43,302 shares
|
— | 31 Dec 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q1 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
17
Shares
161,922
Rows available
17
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q1 2026 vs Q4 2025 Across Filers
Q4 2025 holders
18
Q1 2026 holders
17
Holder diff
-1
| Investor | Q4 2025 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q4 2025 value | Q1 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend