0Suppliers
14Customers
2Debt Items
20Related Chains

Source-Backed Evidence Depth

Spero Therapeutics, Inc. (SPRO) is shown with relationship data already present in ChainSifter's database. Counts below come from stored supply-chain records and filing/source URLs where available; missing source URLs are not filled in or estimated.

17Total relationships
3Distinct source URLs
8High confidence
0.761Average confidence
2026-09-13Latest database update
ChainSifter does not infer unreported suppliers, customers, ownership, acquisitions, debt exposure, revenue dependency, or future supply-chain events on this public page.

Spero Therapeutics, Inc. Suppliers

No suppliers on recordSpero Therapeutics, Inc. has not yet been matched to upstream suppliers in our database, or is still being processed.

Spero Therapeutics, Inc. Customers

TickerNameConfidenceEvidence
USGOV-DEPARTMENT-OF-HEALTH-AND-HUMAN-SERVICES USGOV-DEPARTMENT-OF-HEALTH-AND-HUMAN-SERVICES 95% USAspending awards from Department of Health and Human Services: $60,234,832 across 2 awards. 75A50118C00015 IGF::OT::IGF; 75N93021C00022 TO ADVANCE CLINICAL AND NON-CLINICAL DEVELOPMENT OF AN ANTIBI…
PFE Pfizer Inc. 90% In the third quarter of 2022, upon the completion of a milestone related to regulatory engagement for SPR206, Pfizer communicated its approval that the milestone was achieved, and the Company receive…
PFE Pfizer Inc. 90% Reciprocal relationship from PFE graph: Reciprocal relationship from SPRO graph: Reciprocal relationship from PFE graph: Reciprocal relationship from SPRO graph: Reciprocal relationship from PFE grap…
GLAXO-GROUP-LIMITED GLAXO-GROUP-LIMITED 85% contract inception, the total transaction price was $ 64.7 million, which included the initial payment of $ 66.0 million in the fourth quarter of 2022 and the discount of $ 1.3 million related to the…
GSK GSK plc 85% Reciprocal relationship from GSK graph: Reciprocal relationship from SPRO graph: contract inception, the total transaction price was $ 64.7 million, which included the initial payment of $ 66.0 milli…
VRTX Vertex Pharmaceuticals Incorporated 72% Reciprocal relationship from VRTX graph: Reciprocal relationship from SPRO graph: Reciprocal relationship from VRTX graph: Reciprocal relationship from SPRO graph: Reciprocal relationship from VRTX g…
VRTX Vertex Pharmaceuticals Incorporated 72% were fully constrained as of December 31, 2024 and not included in the transaction price. The Company can also earn sales-based royalties. Pursuant to Amendment 2 to the GSK License Agreement, the Co…
CAPITAL-RESOURCES CAPITAL-RESOURCES 62% ulting expenses incurred in the three months ended March 31, 2026. Facility-related and other costs primarily reflect costs related to supporting our general and administrative staff. Other Income (E…
CIPLA-THERAPEUTICS-INC CIPLA-THERAPEUTICS-INC 62% bject us to other risks. We may evaluate various acquisitions and strategic collaborations, including licensing or acquiring complementary products, intellectual property rights, technologies or busi…
CO-LTD CO-LTD 62% bject us to other risks. We may evaluate various acquisitions and strategic collaborations, including licensing or acquiring complementary products, intellectual property rights, technologies or busi…
DELAWARE-GENERAL-CORPORATION DELAWARE-GENERAL-CORPORATION 62% l property rights; • the potential for so-called parallel importing, which is what happens when a local seller, faced with high or higher local prices, opts to import goods from a foreign market (wit…
EVEREST-MEDICINES-II-LIMITED EVEREST-MEDICINES-II-LIMITED 62% n nature of these payments, the Company determined they were fully constrained as of March 31, 2026 and not included in the transaction price. The Company can also earn sales-based royalties. Pursuan…
NEW-PHARMA-LICENSE-HOLDINGS-LIMITED NEW-PHARMA-LICENSE-HOLDINGS-LIMITED 62% n nature of these payments, the Company determined they were fully constrained as of March 31, 2026 and not included in the transaction price. The Company can also earn sales-based royalties. Pursuan…
SPERO-POTENTIATOR-INC SPERO-POTENTIATOR-INC 62% n nature of these payments, the Company determined they were fully constrained as of March 31, 2026 and not included in the transaction price. The Company can also earn sales-based royalties. Pursuan…

Spero Therapeutics, Inc. Debt Obligations

InstrumentDescriptionConfidenceEvidence
SPRO-DEBT Debt stack $2.5M 90% Market cache reports total debt of $2.5M.
SPRO-DEBT-12711 Xbrl Convertible 90% xbrl convertible detail from xbrl 2022-12-31.

Spero Therapeutics, Inc. Acquisitions

No acquisitions on recordNo completed or pending acquisitions found in our database for Spero Therapeutics, Inc..

Spero Therapeutics, Inc. Ownership

HolderNameConfidenceEvidence
SPRO-OWNER-GSK-PLC GSK plc 90% 13F overlay lists GSK plc as top holder; 51 tracked holders.

Spero Therapeutics, Inc. Extended Supply Chain Network

TickerNameChain IndexHopsRelationship Types
GSK GSK plc 100.00 1 ['customer']
ARVN Arvinas, Inc. 100.00 2
MRNA Moderna, Inc. 100.00 2
HALO Halozyme Therapeutics, Inc. 100.00 2
FDMT 4D Molecular Therapeutics, Inc. 100.00 2
CRSP CRISPR Therapeutics AG 100.00 2
CLYM Climb Bio, Inc. 100.00 2
TRDA Entrada Therapeutics, Inc. 100.00 2
COLL Collegium Pharmaceutical, Inc. 100.00 2
JBIO Jade Biosciences, Inc. 100.00 2
PFE Pfizer Inc. 60.75 1 ['customer']
PFIZER PFIZER 60.75 1 ['receiving']
CELG-RI BRISTOL MYERS SQUIBB CO 50.00 2
TBPH Theravance Biopharma, Inc. 50.00 2
BCAX Bicara Therapeutics Inc. 50.00 2
CTNM Contineum Therapeutics, Inc. 50.00 2
DEO Diageo plc 50.00 2
GNTA Genenta Science S.p.A. 50.00 2
ORANY ORANGE 50.00 2
HBIO Harvard Bioscience, Inc. 50.00 2
🔐
SPRO
Unlock SPRO Supply Chain Data
Verified relationships include:
USGOV-DEPARTMENT-OF-HEALTH-AND-HUMAN-SERVICESUSGOV-DEPARTMENT-OF-HEALT…Customer95%
PFEPfizer Inc.Customer90%
+13 more relationships locked
Subscribe — View plans →