Insiders / Pottage John C Jr

Pottage John C Jr

CIK 1378587personinsider

Companies

First seen

Jun 25, 2026

Last activity

Jun 25, 2026

Companies

Company	Role	Shares held	Peak held	Trades	Latest
Spero Therapeutics, Inc. · SPRO	Director	85,000	85,000	2	—

2 positions · latest reported per filing

Company	Security	Shares	As of
Spero Therapeutics, Inc.	Common Stock	85,000	Jun 23, 2026
Spero Therapeutics, Inc.	Stock Option (right to buy)Derivative	20,000	Jun 23, 2026

InsidersInstitutions

This person's insider trades (Form 4), across every company.

Date	Action	Company	Value	Shares Δ	Position after	Impact
Jun 23, 2026	Grant	SPRO Spero Therapeutics, Inc. Common Stock	$0	+10K +13.33%	85,000 0.15% of shares	low
Jun 23, 2026	Grant	SPRO Spero Therapeutics, Inc. Stock Option (right to buy)	—	+20K	20,000 0.03% of shares	low