Ridgeback Capital Investments Ltd.
CIK 0001358916 Name as filed on the most recent filing
Filed as Ridgeback Capital Investments Ltd. (20)
141 transaction lines · from 20 filings · filed 2008-01-16 to 2012-02-09 The span is the filing dates this catalog holds, not the entity's full filing history. Absence here is not evidence of absence at the SEC.
A line appears here when the filing that carries it names this CIK as a reporting owner, not only when the parser picked this CIK as the line's primary owner. That is why a joint filing appears on both owners' pages rather than vanishing from the second one. The catalog never merges two CIKs into one person and never splits one CIK into two: identity here is the SEC's own identifier and nothing else.
Issuers this insider has filed against
Ordered by last-seen filing date, newest first. Roles are as filed on the Form 4 and are not normalised.
This container could not be filled from the store. It is showing nothing because a read failed, not because no insider filed: those are different facts and this catalog will not let one stand in for the other. The last ingest the store recorded was 2026-08-20 05:22 UTC.
- ISSUER Ironwood Pharmaceuticals Inc 5 filings
- ISSUER Sequenom Inc 14 filings
- ISSUER Acorda Therapeutics Inc 1 filings
No issuer is recorded
The catalog holds no filing linking this CIK to an issuer.
Transactions
Every stored Form 4 line naming this reporting owner, newest transaction date first. Each row links to the filing it came from.
0 transactions · Newest transaction date first, id breaking the tie.
This container could not be filled from the store. It is showing nothing because a read failed, not because no insider filed: those are different facts and this catalog will not let one stand in for the other. The last ingest the store recorded was 2026-08-20 05:22 UTC.
| Direction | Date | Issuer | Code | Shares | Price | Value USD | Filing |
|---|---|---|---|---|---|---|---|
| 2012-02-06 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 47,229 disposed | 14.80 | 698,989.20 | Form 4, filing 0000932440-12-000050 | |
| 2012-02-03 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 61,949 disposed | 14.92 | 924,279.08 | Form 4, filing 0000932440-12-000050 | |
| 2012-02-02 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 3,300 disposed | 15.03 | 49,599.00 | Form 4, filing 0000932440-12-000050 | |
| 2011-11-04 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 192,600 disposed | 13.94 | 2,684,844.00 | Form 4, filing 0000932440-12-000049 | |
| 2011-11-03 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 50,000 disposed | 13.77 | 688,500.00 | Form 4, filing 0000932440-12-000049 | |
| 2011-11-03 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 25,400 disposed | 14.03 | 356,362.00 | Form 4, filing 0000932440-12-000049 | |
| 2011-11-03 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 15,400 disposed | 14.29 | 220,066.00 | Form 4, filing 0000932440-12-000049 | |
| 2011-11-02 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 29,349 disposed | 13.69 | 401,787.81 | Form 4, filing 0000932440-12-000049 | |
| 2011-10-31 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 2,584 disposed | 13.81 | 35,685.04 | Form 4, filing 0000932440-12-000048 | |
| 2011-10-28 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 4,100 disposed | 14.06 | 57,646.00 | Form 4, filing 0000932440-12-000048 | |
| 2011-10-27 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 160,000 disposed | 13.85 | 2,216,000.00 | Form 4, filing 0000932440-12-000048 | |
| 2011-10-27 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 42,300 disposed | 14.28 | 604,044.00 | Form 4, filing 0000932440-12-000048 | |
| 2011-10-26 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 100,000 disposed | 12.85 | 1,285,000.00 | Form 4, filing 0000932440-12-000048 | |
| 2011-10-26 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 34,900 disposed | 13.00 | 453,700.00 | Form 4, filing 0000932440-12-000048 | |
| 2011-10-26 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 25,000 disposed | 13.03 | 325,750.00 | Form 4, filing 0000932440-12-000048 | |
| 2011-10-25 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 200,000 disposed | 12.71 | 2,542,000.00 | Form 4, filing 0000932440-12-000048 | |
| 2011-10-24 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 26,200 disposed | 11.99 | 314,138.00 | Form 4, filing 0000932440-12-000048 | |
| 2011-10-21 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 8,837 disposed | 11.85 | 104,718.45 | Form 4, filing 0000932440-12-000048 | |
| 2011-10-17 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 17,122 disposed | 12.39 | 212,141.58 | Form 4, filing 0000932440-12-000048 | |
| 2011-10-14 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 38,993 disposed | 12.23 | 476,884.39 | Form 4, filing 0000932440-12-000048 | |
| 2011-10-13 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 21,200 disposed | 11.84 | 251,008.00 | Form 4, filing 0000932440-12-000048 | |
| 2011-10-12 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 22,330 disposed | 11.49 | 256,571.70 | Form 4, filing 0000932440-12-000048 | |
| 2011-10-12 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 5,000 disposed | 11.22 | 56,100.00 | Form 4, filing 0000932440-12-000048 | |
| 2011-10-10 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 51,472 disposed | 10.98 | 565,162.56 | Form 4, filing 0000932440-12-000048 | |
| 2011-10-07 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 1,600 disposed | 10.91 | 17,456.00 | Form 4, filing 0000932440-12-000048 | |
| 2011-10-06 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 50,000 disposed | 10.91 | 545,500.00 | Form 4, filing 0000932440-12-000048 | |
| 2011-10-06 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 12,922 disposed | 10.86 | 140,332.92 | Form 4, filing 0000932440-12-000048 | |
| 2011-10-05 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 49,700 disposed | 10.86 | 539,742.00 | Form 4, filing 0000932440-12-000048 | |
| 2011-10-05 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 15,017 disposed | 10.89 | 163,535.13 | Form 4, filing 0000932440-12-000048 | |
| 2011-09-27 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 22,759 disposed | 11.55 | 262,866.45 | Form 4, filing 0000932440-12-000048 | |
| 2011-09-27 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 10,132 disposed | 11.98 | 121,381.36 | Form 4, filing 0000932440-12-000048 | |
| 2011-09-26 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 50,000 disposed | 11.55 | 577,500.00 | Form 4, filing 0000932440-12-000048 | |
| 2011-09-26 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 4,948 disposed | 11.79 | 58,336.92 | Form 4, filing 0000932440-12-000048 | |
| 2011-09-23 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 50,000 disposed | 11.89 | 594,500.00 | Form 4, filing 0000932440-12-000048 | |
| 2011-09-23 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 8,528 disposed | 11.83 | 100,886.24 | Form 4, filing 0000932440-12-000048 | |
| 2011-09-22 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 13,355 disposed | 11.10 | 148,240.50 | Form 4, filing 0000932440-12-000048 | |
| 2011-08-30 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 20,100 disposed | 12.75 | 256,275.00 | Form 4, filing 0000932440-12-000047 | |
| 2011-08-30 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 100 disposed | 12.82 | 1,282.00 | Form 4, filing 0000932440-12-000047 | |
| 2011-08-30 |
Ironwood Pharmaceuticals Inc IRWD |
P, Open-market purchase | 100 acquired | 12.75 | 1,275.00 | Form 4, filing 0000932440-12-000047 | |
| 2011-08-26 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 25,000 disposed | 12.82 | 320,500.00 | Form 4, filing 0000932440-12-000047 | |
| 2011-08-26 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 47 disposed | 13.00 | 611.00 | Form 4, filing 0000932440-12-000047 | |
| 2011-08-25 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 80,000 disposed | 12.71 | 1,016,800.00 | Form 4, filing 0000932440-12-000047 | |
| 2011-08-23 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 31,352 disposed | 13.05 | 409,143.60 | Form 4, filing 0000932440-12-000047 | |
| 2011-08-23 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 500 disposed | 13.04 | 6,520.00 | Form 4, filing 0000932440-12-000047 | |
| 2011-08-22 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 70,000 disposed | 12.44 | 870,800.00 | Form 4, filing 0000932440-12-000047 | |
| 2011-08-19 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 93,600 disposed | 12.23 | 1,144,728.00 | Form 4, filing 0000932440-12-000047 | |
| 2011-08-18 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 99,000 disposed | 12.45 | 1,232,550.00 | Form 4, filing 0000932440-12-000047 | |
| 2011-08-18 |
Ironwood Pharmaceuticals Inc IRWD |
P, Open-market purchase | 1,000 acquired | 12.42 | 12,420.00 | Form 4, filing 0000932440-12-000047 | |
| 2011-08-17 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 250,000 disposed | 13.00 | 3,250,000.00 | Form 4, filing 0000932440-12-000047 | |
| 2011-08-15 |
Ironwood Pharmaceuticals Inc IRWD |
S, Open-market sale | 12,765 disposed | 12.96 | 165,434.40 | Form 4, filing 0000932440-12-000047 |
This column is intentionally blank
No transaction line is stored for this reporting owner, though the catalog holds filings naming them. That happens when the filings report only holdings or only positions the store does not carry, and when a parse failed; each filing page states its own parse status.
- S, Open-market sale
- Open-market sale
- P, Open-market purchase
- Open-market purchase
Every value is as reported on the Form 4. A price the filing did not report is marked Not reported and no value is computed from it. Codes outside the open market, drawn in grey behind a dashed rule, are compensation and administrative machinery rather than a decision to trade at the prevailing price.
What this insider's stored lines contain
No transaction line is stored for this entity, so there is nothing to break down by code. The catalog holds its filings; what it does not hold is a single reportable line from them, which is a fact about the parse and about these filings, not about the entity.
How to cite this page
ebomi catalog. Ridgeback Capital Investments Ltd., insider transactions. Retrieved 2026-08-20 from https://ebomi.com/insider/0001358916
Balogh, A. Insider trading. Scientific Data 10, 237 (2023) doi:10.1038/s41597-023-02147-6