Stocks · Health care · Pharmaceutical Preparations

Spero Therapeutics, Inc.

SPRO Clue Score50
United States Fiscal year ends December CIK 0001701108 Results filed 12 Aug 2026

What the insiders did No buying or selling

By person

12 insiders · 0 transactions
Insider
Role
Bought
Sold
Net
Holding
Worth
Change
Sath Shukla
CEO & President
—
—
—
1,736,883
$4.36M
+52.3%
Esther Rajavelu
See Remarks
—
—
—
986,851
$2.48M
+135.0%
Timothy Keutzer
Chief Operating Officer
—
—
—
742,506
$1.86M
+39.6%
Ankit Mahadevia
Director
—
—
—
703,294
$1.77M
−7.3%
Debra Zack
Chief Medical Officer
—
—
—
162,311
$407.40K
—
Milind Deshpande
Director
—
—
—
101,454
$254.65K
+42.0%
Kathleen Tregoning
Director
—
—
—
85,000
$213.35K
+54.5%
Cynthia Smith
Director
—
—
—
85,000
$213.35K
+54.5%
Frank E Thomas
Director
—
—
—
85,000
$213.35K
+54.5%
Scott Thomas Jackson
Director
—
—
—
85,000
$213.35K
+54.5%
Patrick V.j.j. Vink
Director
—
—
—
85,000
$213.35K
+54.5%
John C Pottage Jr
Director
—
—
—
85,000
$213.35K
+54.5%

No percentages here. These insiders hold more than one class of share between them, and the share count on file covers one of them rather than all. Dividing the two would compare different things.