Does Rallies show Form 4 insider transactions for SPRO?

Yes. Rallies tracks SPRO insider trading and Form 4 activity, including executive purchases, executive sales, transaction dates, shares, and prices when available.

Is SPRO research on Rallies investment advice?

No. Rallies provides research, data, and educational context for SPRO. It does not provide personalized investment advice.

SPRO (Spero Therapeutics, Inc. Common Stock) Stock Analysis - Insider Trades

Spero Therapeutics, Inc. Common Stock (SPRO) is a publicly traded Healthcare sector company. As of May 21, 2026, SPRO trades at $2.60 with a market cap of $149.39M and a P/E ratio of 0.00. SPRO moved +1.16% today. Year to date, SPRO is +8.23%; over the trailing twelve months it is +286.65%. Its 52-week range spans $0.51 to $3.22. Rallies surfaces SPRO's financials, insider trades, hedge fund holdings, congressional trades, analyst ratings, and AI-generated research below.

Who is trading SPRO stock inside the company?

Recent SPRO insider activity includes Rajavelu Esther sold 25.24K, Rajavelu Esther sold 37.10K, Rajavelu Esther sold 50.82K, Keutzer Timothy sold 18.65K, and Keutzer Timothy sold 3.47K. Rallies tracks insider transaction dates, shares, prices, and estimated values.

SPRO Key Metrics

Key financial metrics for SPRO
Metric	Value
Price	$2.60
Market Cap	$149.39M
P/E Ratio	0.00
EPS	$0.00
Dividend Yield	0.00%
52-Week High	$3.22
52-Week Low	$0.51
Volume	0
Avg Volume	0
Revenue (TTM)	$13.51M
Net Income	$-525.95K
Gross Margin	57.80%

Recent SPRO Insider Trades

Rajavelu Esther sold 25.24K (~$63.35K) on May 4, 2026.
Rajavelu Esther sold 37.10K (~$87.56K) on Feb 6, 2026.
Rajavelu Esther sold 50.82K (~$119.93K) on Feb 6, 2026.
Keutzer Timothy sold 18.65K (~$44.02K) on Feb 6, 2026.
Keutzer Timothy sold 3.47K (~$7.78K) on Feb 4, 2026.

Latest SPRO News

Spero Therapeutics’ Q1 Loss Narrows to $7.2M as PDUFA Date Set June 18 — May 13, 2026
Spero Reports $31.5M Q4 Net Income and Resubmits tebipenem HBr NDA for June Decision — Mar 26, 2026

SPRO Analyst Consensus

SPRO analyst coverage data. Average price target: $0.00.

Common questions about SPRO

Who is trading SPRO stock inside the company?: Recent SPRO insider activity includes Rajavelu Esther sold 25.24K, Rajavelu Esther sold 37.10K, Rajavelu Esther sold 50.82K, Keutzer Timothy sold 18.65K, and Keutzer Timothy sold 3.47K. Rallies tracks insider transaction dates, shares, prices, and estimated values.
Does Rallies show Form 4 insider transactions for SPRO?: Yes. Rallies tracks SPRO insider trading and Form 4 activity, including executive purchases, executive sales, transaction dates, shares, and prices when available.
Is SPRO research on Rallies investment advice?: No. Rallies provides research, data, and educational context for SPRO. It does not provide personalized investment advice.