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Who

Timothy Keutzer

Chief Operating Officer

Company insider

Files Form 4 as: Chief Operating Officer, Spero Therapeutics.

In numbers

Trades disclosed
28
Buys
0
Sells
10
Bought
$0
Sold
$392K
Companies
1
Companies where not an officer
0
First trade
3 Feb 2020
Last trade
6 Feb 2026
Last filed
9 Feb 2026

Companies traded

Where they are an officer
SPRO Spero TherapeuticsOfficer · Biotechnology · last 6 Feb 20260 buys · 10 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
40Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
6 Feb 2026filed 9 Feb 2026SPRO Spero TherapeuticsBiotechnologySEC FORM 4 Sold$44K18,652 at $2.36filing
6 Feb 2026filed 9 Feb 2026SPRO Spero TherapeuticsBiotechnologySEC FORM 4 Sold$44K18,652 at $2.36filing
4 Feb 2026filed 5 Feb 2026SPRO Spero TherapeuticsBiotechnologySEC FORM 4 Sold$7,7753,471 at $2.24filing
4 Feb 2026filed 5 Feb 2026SPRO Spero TherapeuticsBiotechnologySEC FORM 4 Sold$7,7753,471 at $2.24filing
3 Feb 2026filed 5 Feb 2026SPRO Spero TherapeuticsBiotechnologySEC FORM 4 Sold$52K24,224 at $2.14filing
3 Feb 2026filed 5 Feb 2026SPRO Spero TherapeuticsBiotechnologySEC FORM 4 Sold$52K24,224 at $2.14filing
2 Feb 2026filed 5 Feb 2026SPRO Spero TherapeuticsBiotechnologySEC FORM 4 Code A—68,000 at $0.00filing
2 Feb 2026filed 5 Feb 2026SPRO Spero TherapeuticsBiotechnologySEC FORM 4 Sold$42K18,891 at $2.20filing
2 Feb 2026filed 5 Feb 2026SPRO Spero Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—137,000 at $0.00filing
2 Feb 2026filed 5 Feb 2026SPRO Spero Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—137,000 at $0.00filing
2 Feb 2026filed 5 Feb 2026SPRO Spero TherapeuticsBiotechnologySEC FORM 4 Code A—68,000 at $0.00filing
2 Feb 2026filed 5 Feb 2026SPRO Spero TherapeuticsBiotechnologySEC FORM 4 Sold$42K18,891 at $2.20filing
28 Aug 2025filed 3 Sep 2025SPRO Spero TherapeuticsBiotechnologySEC FORM 4 Sold$3,3391,695 at $1.97filing
5 Feb 2025filed 5 Feb 2025SPRO Spero TherapeuticsBiotechnologySEC FORM 4 Sold$3,1003,974 at $0.78filing
5 Feb 2025filed 5 Feb 2025SPRO Spero TherapeuticsBiotechnologySEC FORM 4 Sold$22K27,643 at $0.78filing
5 Feb 2025filed 5 Feb 2025SPRO Spero TherapeuticsBiotechnologySEC FORM 4 Sold$19K24,920 at $0.78filing
3 Feb 2025filed 5 Feb 2025SPRO Spero TherapeuticsBiotechnologySEC FORM 4 Code A—266,139 at $0.00filing
27 Aug 2024filed 29 Aug 2024SPRO Spero TherapeuticsBiotechnologySEC FORM 4 Sold$2,9882,213 at $1.35filing
2 Feb 2024filed 5 Feb 2024SPRO Spero TherapeuticsBiotechnologySEC FORM 4 Sold$42K30,971 at $1.36filing
1 Feb 2024filed 5 Feb 2024SPRO Spero TherapeuticsBiotechnologySEC FORM 4 Code A—239,731 at $0.00filing

News

Spero Therapeutics to Participate in the Chardan 10th Annual Healthcare ConferenceSPRO · manilatimes.net · 15 Oct 2026

0 headlines in the last 90 days name Timothy Keutzer; 1 article from the last 14 days about the 1 company they traded most, at most three about any one of them.

Sectors

Health Care10

Buys in green, sells in red, by the company’s sector.

Related people

Debra ZackChief Medical Officer · Chief Medical Officer at Spero Therapeutics, filing Form 4 there in the last year
John C. Pottage Jr.Director · Director at Spero Therapeutics, filing Form 4 there in the last year
Milind DeshpandeDirector · Director at Spero Therapeutics, filing Form 4 there in the last year
Patrick V.J.J. VinkDirector · Director at Spero Therapeutics, filing Form 4 there in the last year
Scott Thomas JacksonDirector · Director at Spero Therapeutics, filing Form 4 there in the last year