Aquilo Capital, L.P.
CIK 0001491371 Name as filed on the most recent filing
Filed as Aquilo Capital, L.P. (23)
40 transaction lines · from 23 filings · filed 2020-11-06 to 2022-09-26 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 2026-08-21 05:23 UTC.
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 2026-08-21 05:23 UTC.
| Direction | Date | Issuer | Code | Shares | Price | Value USD | Filing |
|---|---|---|---|---|---|---|---|
| 2022-09-22 |
Spero Therapeutics, Inc. SPRO |
S, Open-market sale | 1,335,512 disposed | 2.25 | 3,005,302.65 | Form 4, filing 0001591986-22-000018 | |
| 2022-09-22 |
Spero Therapeutics, Inc. SPRO |
S, Open-market sale | 566,284 disposed | 2.25 | 1,274,308.89 | Form 4, filing 0001591986-22-000018 | |
| 2022-04-26 |
Spero Therapeutics, Inc. SPRO |
P, Open-market purchase | 39,727 acquired | 5.24 | 207,970.84 | Form 4, filing 0001591986-22-000015 | |
| 2022-03-30 |
Spero Therapeutics, Inc. SPRO |
P, Open-market purchase | 33,115 acquired | 8.79 | 291,027.87 | Form 4, filing 0001591986-22-000014 | |
| 2022-03-30 |
Spero Therapeutics, Inc. SPRO |
P, Open-market purchase | 16,885 acquired | 8.79 | 148,392.13 | Form 4, filing 0001591986-22-000014 | |
| 2022-03-14 |
Spero Therapeutics, Inc. SPRO |
P, Open-market purchase | 15,702 acquired | 7.63 | 119,743.45 | Form 4, filing 0001591986-22-000013 | |
| 2022-03-14 |
Spero Therapeutics, Inc. SPRO |
P, Open-market purchase | 8,006 acquired | 7.63 | 61,053.76 | Form 4, filing 0001591986-22-000013 | |
| 2022-02-28 |
Spero Therapeutics, Inc. SPRO |
P, Open-market purchase | 29,729 acquired | 9.53 | 283,296.56 | Form 4, filing 0001591986-22-000011 | |
| 2022-02-28 |
Spero Therapeutics, Inc. SPRO |
P, Open-market purchase | 15,104 acquired | 9.53 | 143,930.55 | Form 4, filing 0001591986-22-000011 | |
| 2022-02-18 |
Spero Therapeutics, Inc. SPRO |
P, Open-market purchase | 14,828 acquired | 9.24 | 137,038.89 | Form 4, filing 0001591986-22-000010 | |
| 2022-01-31 |
Spero Therapeutics, Inc. SPRO |
P, Open-market purchase | 125,000 acquired | 11.59 | 1,448,262.50 | Form 4, filing 0001591986-22-000004 | |
| 2022-01-24 |
Spero Therapeutics, Inc. SPRO |
P, Open-market purchase | 1,599 acquired | 10.89 | 17,418.07 | Form 4, filing 0001591986-22-000003 | |
| 2022-01-18 |
Spero Therapeutics, Inc. SPRO |
P, Open-market purchase | 48,488 acquired | 12.41 | 601,963.97 | Form 4, filing 0001591986-22-000002 | |
| 2022-01-10 |
Spero Therapeutics, Inc. SPRO |
P, Open-market purchase | 8,867 acquired | 12.93 | 114,608.64 | Form 4, filing 0001591986-22-000001 | |
| 2021-12-31 |
Spero Therapeutics, Inc. SPRO |
P, Open-market purchase | 125,000 acquired | 15.75 | 1,969,025.00 | Form 4, filing 0001691902-22-000001 | |
| 2021-12-30 |
Spero Therapeutics, Inc. SPRO |
P, Open-market purchase | 50,000 acquired | 15.77 | 788,610.00 | Form 4, filing 0001691902-22-000001 | |
| 2021-12-29 |
Spero Therapeutics, Inc. SPRO |
P, Open-market purchase | 75,493 acquired | 14.64 | 1,105,262.82 | Form 4, filing 0001691902-22-000001 | |
| 2021-10-29 |
Spero Therapeutics, Inc. SPRO |
P, Open-market purchase | 150,000 acquired | 17.53 | 2,630,175.00 | Form 4, filing 0001591986-21-000016 | |
| 2021-09-30 |
Spero Therapeutics, Inc. SPRO |
P, Open-market purchase | 134,543 acquired | 18.65 | 2,509,173.13 | Form 4, filing 0001591986-21-000015 | |
| 2021-09-14 |
Spero Therapeutics, Inc. SPRO |
P, Open-market purchase | 2,156 acquired | 18.49 | 39,872.42 | Form 4, filing 0001591986-21-000014 | |
| 2021-09-13 |
Spero Therapeutics, Inc. SPRO |
P, Open-market purchase | 44,210 acquired | 18.56 | 820,674.65 | Form 4, filing 0001591986-21-000014 | |
| 2021-09-09 |
Spero Therapeutics, Inc. SPRO |
P, Open-market purchase | 24,749 acquired | 18.50 | 457,792.15 | Form 4, filing 0001591986-21-000013 | |
| 2021-08-31 |
Spero Therapeutics, Inc. SPRO |
P, Open-market purchase | 48,645 acquired | 18.93 | 920,660.13 | Form 4, filing 0001591986-21-000012 | |
| 2021-08-30 |
Spero Therapeutics, Inc. SPRO |
P, Open-market purchase | 44,042 acquired | 17.87 | 786,858.78 | Form 4, filing 0001591986-21-000012 | |
| 2021-08-27 |
Spero Therapeutics, Inc. SPRO |
P, Open-market purchase | 13,957 acquired | 16.88 | 235,531.35 | Form 4, filing 0001591986-21-000011 | |
| 2021-08-26 |
Spero Therapeutics, Inc. SPRO |
P, Open-market purchase | 22,982 acquired | 16.55 | 380,322.22 | Form 4, filing 0001591986-21-000011 | |
| 2021-08-24 |
Spero Therapeutics, Inc. SPRO |
P, Open-market purchase | 40,170 acquired | 16.28 | 653,794.87 | Form 4, filing 0001591986-21-000010 | |
| 2021-08-23 |
Spero Therapeutics, Inc. SPRO |
P, Open-market purchase | 137,835 acquired | 16.33 | 2,251,341.76 | Form 4, filing 0001591986-21-000010 | |
| 2021-08-20 |
Spero Therapeutics, Inc. SPRO |
P, Open-market purchase | 221,190 acquired | 14.86 | 3,286,905.52 | Form 4, filing 0001591986-21-000010 | |
| 2021-02-08 |
Spero Therapeutics, Inc. SPRO |
S, Open-market sale | 3,000 disposed | 21.74 | 65,215.20 | Form 4, filing 0001591986-21-000003 | |
| 2021-02-04 |
Spero Therapeutics, Inc. SPRO |
S, Open-market sale | 34,144 disposed | 18.99 | 648,254.57 | Form 4, filing 0001591986-21-000001 | |
| 2021-02-03 |
Spero Therapeutics, Inc. SPRO |
S, Open-market sale | 29,354 disposed | 18.98 | 557,100.76 | Form 4, filing 0001591986-21-000001 | |
| 2021-02-02 |
Spero Therapeutics, Inc. SPRO |
S, Open-market sale | 22,841 disposed | 18.99 | 433,771.15 | Form 4, filing 0001591986-21-000001 | |
| 2021-02-01 |
Spero Therapeutics, Inc. SPRO |
S, Open-market sale | 13,661 disposed | 19.24 | 262,860.86 | Form 4, filing 0001591986-21-000001 | |
| 2020-12-17 |
Spero Therapeutics, Inc. SPRO |
S, Open-market sale | 250,000 disposed | 18.81 | 4,703,225.00 | Form 4, filing 0001591986-20-000019 | |
| 2020-12-16 |
Spero Therapeutics, Inc. SPRO |
S, Open-market sale | 14,933 disposed | 18.62 | 278,034.54 | Form 4, filing 0001591986-20-000019 | |
| 2020-11-09 |
Spero Therapeutics, Inc. SPRO |
S, Open-market sale | 125,900 disposed | 13.77 | 1,734,071.06 | Form 4, filing 0001591986-20-000016 | |
| 2020-11-06 |
Spero Therapeutics, Inc. SPRO |
S, Open-market sale | 5,000 disposed | 13.77 | 68,873.50 | Form 4, filing 0001591986-20-000015 | |
| 2020-11-05 |
Spero Therapeutics, Inc. SPRO |
S, Open-market sale | 96,600 disposed | 13.98 | 1,350,332.76 | Form 4, filing 0001591986-20-000015 | |
| 2020-11-04 |
Spero Therapeutics, Inc. SPRO |
S, Open-market sale | 72,500 disposed | 14.26 | 1,033,741.25 | Form 4, filing 0001591986-20-000015 |
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. Aquilo Capital, L.P., insider transactions. Retrieved 2026-08-22 from https://ebomi.com/insider/0001491371
Balogh, A. Insider trading. Scientific Data 10, 237 (2023) doi:10.1038/s41597-023-02147-6