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 buying

Bought (120 mo)

$44.50M

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

Sold (120 mo)

$17.95M

$115.47K on a plan · $1.18M straight out of an exercise

Sold at will

$16.66M

53 of 81 sales

Net

+$26.55M

+$27.84M against sales at will