InsiderClue
Stocks · Health care · Pharmaceutical Preparations

Spero Therapeutics, Inc.

SPRO Clue Score50
United States Fiscal year ends December CIK 0001701108 Results filed 12 Aug 2026
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What the insiders did Net selling

Individual transactions

9
Insider
Date
Role
Action
Shares
Price
Amount
Esther Rajavelu
4 May 2026
See Remarks
Sell
25,240
$2.51
$63.35K
Timothy Keutzer
6 Feb 2026
Chief Operating Officer
Sell
18,652
$2.36
$44.02K
Esther Rajavelu
6 Feb 2026
See Remarks
Sell
50,816
$2.36
$119.93K
Esther Rajavelu
6 Feb 2026
See Remarks
Sell
37,101
$2.36
$87.56K
Timothy Keutzer
4 Feb 2026
Chief Operating Officer
Sell
3,471
$2.24
$7.78K
Timothy Keutzer
3 Feb 2026
Chief Operating Officer
Sell
24,224
$2.14
$51.84K
Esther Rajavelu
2 Feb 2026
See Remarks
Sell
18,442
$2.20
$40.57K
Timothy Keutzer
2 Feb 2026
Chief Operating Officer
Sell
18,891
$2.20
$41.56K
Esther Rajavelu
7 Nov 2025
See Remarks
Sell
40,270
$2.37
$95.44K

What was left out

Form 4 filings counted 14
Amendments (4/A) skipped 0
Filings about a different issuer 0
Unreadable filings 0
Joint filings 0
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 0
Sales at will 9
Transactions with no price 0
Shares from compensation/vesting 549,311
History held since 7 Nov 2017