LIVE FROM THE DATABASETRANSACTIONS 362,430COMPANIES 5,763LATEST TRADE Oct 16UPDATED Oct 17, 12:31 AM
SPROCIK 0001701108

Spero Therapeutics, Inc.

28 transactions by 10 insiders, from February 2, 2026 to August 3, 2026.

Transactions
2810 insiders
Bought · P
Nonenobody bought on the open market
Sold · S
$457Kopen market
Net
−$457Knet selling

Officers and directors

People inside the company. What they do with their own shares is the reason this data exists.

InsiderTradesPlannedBoughtSold
Timothy KeutzerCOO6——$145K
Esther RajaveluOfficer6——$311K
Milind DeshpandeDir2———
Patrick V.j.j. VinkDir2———
Scott Thomas JacksonDir2———
Frank E. ThomasDir2———
Debra ZackCMO22/2——
Kathleen TregoningDir2———
Cynthia SmithDir2———
John C. Pottage Jr.Dir2———

All transactions

28 in total, newest filings first.

InsiderDateCodeSharesPriceValue
Debra ZackCMODERIVAug 3APLAN324,675$0.00—?
Debra ZackCMOAug 3APLAN162,311$0.00—
Kathleen TregoningDirDERIVJun 23A20,000$0.00—?
Kathleen TregoningDirJun 23A10,000$0.00—
Patrick V.j.j. VinkDirDERIVJun 23A20,000$0.00—?
Patrick V.j.j. VinkDirJun 23A10,000$0.00—
Frank E. ThomasDirDERIVJun 23A20,000$0.00—?
Frank E. ThomasDirJun 23A10,000$0.00—
Cynthia SmithDirDERIVJun 23A20,000$0.00—?
Cynthia SmithDirJun 23A10,000$0.00—
John C. Pottage Jr.DirDERIVJun 23A20,000$0.00—?
John C. Pottage Jr.DirJun 23A10,000$0.00—
Scott Thomas JacksonDirDERIVJun 23A20,000$0.00—?
Scott Thomas JacksonDirJun 23A10,000$0.00—
Milind DeshpandeDirDERIVJun 23A20,000$0.00—?
Milind DeshpandeDirJun 23A10,000$0.00—
Esther RajaveluOfficerMay 4S25,240$2.51$63K
Esther RajaveluOfficerFeb 6S50,816$2.36$120K
Esther RajaveluOfficerFeb 6S37,101$2.36$88K
Timothy KeutzerCOOFeb 6S18,652$2.36$44K
Timothy KeutzerCOODERIVFeb 2A137,000$0.00—?
Timothy KeutzerCOOFeb 4S3,471$2.24$8K
Timothy KeutzerCOOFeb 3S24,224$2.14$52K
Timothy KeutzerCOOFeb 2S18,891$2.20$42K
Timothy KeutzerCOOFeb 2A68,000$0.00—
Esther RajaveluOfficerDERIVFeb 2A498,000$0.00—?
Esther RajaveluOfficerFeb 2S18,442$2.20$41K
Esther RajaveluOfficerFeb 2A249,000$0.00—