Federal Data Hub › SEC Fails-to-Deliver · JSON
Fails-to-deliver · CUSIP 81749D107
Over the rolling 12-month window, securities of SERA PROGNOSTICS INC CL A (DE) failed to deliver in the NSCC's Continuous Net Settlement system on 65 settlement days, totaling 824,675 fail shares and peaking at 434,636 shares on 2025-06-30. Persistent or spiking fails-to-deliver can signal delivery stress, naked short selling, or operational settlement problems.
| Settlement date | Fail shares | Price |
|---|---|---|
| 2026-09-22 | 505 | $2.12 |
| 2026-09-16 | 66 | $1.99 |
| 2026-09-15 | 2 | $2.00 |
| 2026-09-14 | 3 | $2.03 |
| 2026-09-08 | 18 | $2.02 |
| 2026-09-02 | 27 | $2.08 |
| 2026-08-31 | 4 | $2.07 |
| 2026-08-13 | 7,702 | $2.02 |
| 2026-08-12 | 8,568 | $1.99 |
| 2026-08-11 | 182 | $2.01 |
| 2026-08-07 | 21,102 | $2.00 |
| 2026-08-06 | 24,254 | $2.00 |
| 2026-08-05 | 25,563 | $1.93 |
| 2026-08-04 | 314 | $2.10 |
| 2026-07-17 | 10 | $2.20 |
| 2026-06-26 | 2,022 | $1.80 |
| 2026-06-25 | 1,552 | $1.80 |
| 2026-06-24 | 942 | $1.84 |
| 2026-06-22 | 3,084 | $1.75 |
| 2026-06-18 | 1,795 | $1.89 |
| 2026-06-11 | 2,403 | $2.00 |
| 2026-06-10 | 6,151 | $2.13 |
| 2026-06-09 | 686 | $2.10 |
| 2026-05-27 | 1,637 | $2.15 |
| 2026-05-19 | 490 | $1.75 |
| 2026-05-14 | 13,717 | $1.59 |
| 2026-05-13 | 9,164 | $1.69 |
| 2026-05-04 | 2,128 | $1.91 |
| 2026-04-24 | 217 | $2.12 |
| 2026-04-23 | 343 | $2.14 |
| 2026-04-21 | 28 | $2.29 |
| 2026-04-20 | 65 | $2.30 |
| 2026-04-09 | 1,651 | $2.22 |
| 2026-04-07 | 1,749 | $2.30 |
| 2026-03-30 | 454 | $1.85 |
| 2026-03-26 | 2,012 | $1.99 |
| 2026-03-24 | 968 | $1.82 |
| 2026-03-23 | 1,081 | $1.84 |
| 2026-03-12 | 18 | $1.93 |
| 2026-02-02 | 706 | $2.76 |
| 2026-01-16 | 523 | $3.52 |
| 2026-01-15 | 55 | $3.54 |
| 2026-01-08 | 305 | $3.30 |
| 2026-01-05 | 117 | $3.00 |
| 2025-12-29 | 528 | $3.52 |
| 2025-12-23 | 3,481 | $3.60 |
| 2025-12-19 | 279 | $3.57 |
| 2025-12-18 | 917 | $3.59 |
| 2025-12-17 | 3,370 | $3.56 |
| 2025-12-12 | 2,961 | $3.40 |
| 2025-12-09 | 200 | $3.05 |
| 2025-11-28 | 622 | $3.32 |
| 2025-11-26 | 5,603 | $3.40 |
| 2025-11-10 | 63 | $2.52 |
| 2025-10-06 | 8 | $3.25 |
| 2025-09-29 | 7,035 | $3.09 |
| 2025-09-10 | 1,011 | $3.10 |
| 2025-08-08 | 6,032 | $2.60 |
| 2025-08-07 | 1,370 | $2.75 |
| 2025-08-06 | 995 | $2.45 |
| 2025-08-05 | 1,401 | $2.59 |
| 2025-08-04 | 2,274 | $2.70 |
| 2025-07-30 | 409 | $2.90 |
| 2025-07-25 | 29,657 | $3.25 |
| 2025-07-24 | 26,485 | $3.11 |
| 2025-07-23 | 49,663 | $2.88 |
| 2025-07-22 | 2,077 | $2.92 |
| 2025-07-21 | 10,040 | $2.92 |
| 2025-07-18 | 14,758 | $3.00 |
| 2025-07-17 | 4,264 | $2.97 |
| 2025-07-14 | 2,133 | $2.84 |
| 2025-07-11 | 1,107 | $2.76 |
| 2025-07-09 | 35,590 | $2.72 |
| 2025-07-08 | 33,514 | $2.42 |
| 2025-07-07 | 400 | $2.49 |
| 2025-07-03 | 150 | $2.45 |
| 2025-07-02 | 3,850 | $2.59 |
| 2025-07-01 | 24,002 | $2.77 |
| 2025-06-30 | 434,636 | $4.09 |
| 2025-06-27 | 1,512 | $1.98 |
| 2025-06-26 | 2,841 | $2.00 |
| 2025-06-24 | 7,396 | $1.87 |
| 2025-06-23 | 3,662 | $1.92 |
| 2025-06-13 | 17,379 | $1.78 |
| 2025-06-12 | 38,159 | $1.50 |
| 2025-06-09 | 368 | $1.55 |
| 2025-06-03 | 23 | $1.58 |
| 2025-06-02 | 5,022 | $1.56 |
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 81749D107 links to this security's other federal filings across the hub.
Source: SEC Fails-to-Deliver Data. License: CC0 1.0.