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Spero Therapeutics, Inc.

SPRO Net selling

CIK 0001701108 #4540 in the set updated 21 Sep 2026

Bought (12 mo)

$0.00

out of their own pocket, the only kind of buying there is

Sold (12 mo)

$552.04K

$0.00 on a plan · $0.00 straight out of an exercise

Sold at will

$552.04K

9 of 9 sales

Net

−$552.04K

−$552.04K against sales at will

By person

12 insiders · 9 transactions

Insider

Role

Bought

Sold

Net

Holding

Of company

Worth

Change

Rajavelu Esther

See Remarks

—

$406.85K (5)

−$406.85K

986,851

1.69%

$2.48M

+135.0%

Keutzer Timothy

Chief Operating Officer

—

$145.19K (4)

−$145.19K

742,506

1.28%

$1.86M

+39.6%

Shukla Sath

CEO & President

—

1,736,883

2.98%

$4.36M

+52.3%

Mahadevia Ankit

Director

—

703,294

1.21%

$1.77M

−7.3%

Zack Debra

Chief Medical Officer

—

162,311

0.2787%

$407.40K

—

Deshpande Milind

Director

—

101,454

0.1742%

$254.65K

+42.0%

Tregoning Kathleen

Director

—

85,000

0.1460%

$213.35K

+54.5%

Smith Cynthia

Director

—

85,000

0.1460%

$213.35K

+54.5%

THOMAS FRANK E

Director

—

85,000

0.1460%

$213.35K

+54.5%

Jackson Scott Thomas

Director

—

85,000

0.1460%

$213.35K

+54.5%

VINK PATRICK V.J.J.

Director

—

85,000

0.1460%

$213.35K

+54.5%

Pottage John C Jr

Director

—

85,000

0.1460%

$213.35K

+54.5%

Individual transactions

Nothing of that kind in this period.

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