Federal Data Hub › SEC Fails-to-Deliver · JSON
Fails-to-deliver · CUSIP G72800108
Over the rolling 12-month window, securities of PROTHENA CORP PLC SHS (IRL) failed to deliver in the NSCC's Continuous Net Settlement system on 69 settlement days, totaling 318,172 fail shares and peaking at 90,091 shares on 2025-08-27. Persistent or spiking fails-to-deliver can signal delivery stress, naked short selling, or operational settlement problems.
| Settlement date | Fail shares | Price |
|---|---|---|
| 2026-09-29 | 318 | $8.72 |
| 2026-09-24 | 3,531 | $8.68 |
| 2026-09-21 | 5,860 | $8.58 |
| 2026-09-11 | 535 | $9.02 |
| 2026-09-09 | 349 | $9.54 |
| 2026-09-02 | 23 | $9.61 |
| 2026-08-31 | 6,503 | $9.33 |
| 2026-08-26 | 20 | $9.42 |
| 2026-08-25 | 21 | $9.39 |
| 2026-08-18 | 183 | $8.88 |
| 2026-08-17 | 63 | $8.86 |
| 2026-08-06 | 368 | $8.49 |
| 2026-08-03 | 8,398 | $8.12 |
| 2026-07-30 | 1 | $8.56 |
| 2026-07-23 | 8,290 | $8.44 |
| 2026-07-13 | 397 | $9.24 |
| 2026-07-08 | 200 | $9.68 |
| 2026-07-07 | 200 | $9.50 |
| 2026-07-06 | 200 | $9.69 |
| 2026-07-02 | 200 | $9.58 |
| 2026-07-01 | 200 | $9.79 |
| 2026-06-18 | 241 | $8.49 |
| 2026-06-15 | 365 | $8.25 |
| 2026-06-11 | 339 | $7.91 |
| 2026-06-09 | 288 | $8.56 |
| 2026-06-02 | 225 | $9.59 |
| 2026-05-26 | 480 | $9.83 |
| 2026-05-21 | 327 | $9.35 |
| 2026-05-20 | 1,627 | $9.07 |
| 2026-05-19 | 3,392 | $9.59 |
| 2026-05-18 | 4,092 | $9.76 |
| 2026-05-15 | 5,007 | $9.86 |
| 2026-05-14 | 4,445 | $9.60 |
| 2026-05-13 | 4,115 | $9.43 |
| 2026-05-12 | 5,918 | $9.67 |
| 2026-05-01 | 11,200 | $11.06 |
| 2026-04-30 | 11,200 | $10.87 |
| 2026-04-24 | 203 | $10.73 |
| 2026-04-23 | 61 | $10.72 |
| 2026-04-16 | 2,722 | $10.82 |
| 2026-04-02 | 3,840 | $10.03 |
| 2026-03-26 | 55 | $9.31 |
| 2026-03-25 | 55 | $8.73 |
| 2026-03-24 | 55 | $8.82 |
| 2026-03-23 | 55 | $8.75 |
| 2026-03-20 | 2,307 | $8.54 |
| 2026-03-17 | 356 | $9.17 |
| 2026-03-04 | 19 | $9.36 |
| 2026-03-03 | 2,443 | $9.40 |
| 2026-03-02 | 4,805 | $8.67 |
| 2026-02-27 | 2,766 | $8.64 |
| 2026-02-26 | 2,463 | $8.88 |
| 2026-02-25 | 3,074 | $8.97 |
| 2026-02-19 | 1,588 | $9.09 |
| 2026-02-13 | 305 | $8.85 |
| 2026-01-14 | 1 | $8.98 |
| 2026-01-13 | 1 | $8.91 |
| 2026-01-08 | 3,589 | $9.13 |
| 2026-01-07 | 606 | $8.97 |
| 2026-01-06 | 695 | $9.10 |
| 2025-12-31 | 1,999 | $9.31 |
| 2025-12-30 | 1,999 | $9.48 |
| 2025-12-29 | 2,499 | $9.54 |
| 2025-12-26 | 2,099 | $9.69 |
| 2025-12-24 | 25,569 | $9.49 |
| 2025-12-23 | 1,999 | $9.68 |
| 2025-12-22 | 2,953 | $9.21 |
| 2025-12-19 | 1 | $9.38 |
| 2025-12-05 | 136 | $11.16 |
| 2025-12-01 | 111 | $10.75 |
| 2025-11-24 | 121 | $10.48 |
| 2025-11-12 | 3,592 | $10.48 |
| 2025-11-10 | 446 | $10.56 |
| 2025-10-28 | 2,129 | $10.37 |
| 2025-10-27 | 220 | $9.82 |
| 2025-10-16 | 7,160 | $10.66 |
| 2025-10-14 | 1 | $10.35 |
| 2025-09-22 | 3,568 | $8.07 |
| 2025-09-17 | 22,577 | $8.16 |
| 2025-09-10 | 1 | $8.34 |
| 2025-08-29 | 243 | $8.24 |
| 2025-08-28 | 2 | $8.56 |
| 2025-08-27 | 90,091 | $8.35 |
| 2025-08-04 | 31,864 | $6.81 |
| 2025-08-01 | 1,059 | $6.87 |
| 2025-07-30 | 4,062 | $6.93 |
| 2025-07-21 | 100 | $6.26 |
| 2025-07-03 | 65 | $6.32 |
| 2025-07-02 | 884 | $6.26 |
| 2025-06-27 | 5,006 | $6.18 |
Showing 90 most recent of 95.
A "fail-to-deliver" occurs when a party in a securities trade does not deliver the shares by the settlement date. The SEC publishes twice-monthly files of CNS fails-to-deliver by security. This page aggregates the rolling 12-month window. CUSIP G72800108 links to this security's other federal filings across the hub.
Source: SEC Fails-to-Deliver Data. License: CC0 1.0.