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Spero Therapeutics, Inc.

For the period ended Dec 31, 2025. Filed Mar 26, 2026.

View on SEC.gov

About this filing

A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2025 · Filed Mar 26, 2026

SPRO$1.01-5.6%Stored close · as of Nov 10, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

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Consolidated Statements of Stockholders’ Equity

STOCKHOLDERS’ EQUITY

(In thousands, except unit and share amounts)

Additional · Total
Common Stock · Paid-in · Accumulated · Stockholders'
SharesPar ValueCapitalDeficitEquity
Balances at December 31, 202352,999,680$53$497,913$(391,072)$106,894
Issuance of common stock upon the vesting of restricted stock units and performance stock units1,593,8472——2
Share-based compensation expense——7,793—7,793
Net loss———(68,566)(68,566)
Balances at December 31, 202454,593,527$55$505,706$(459,638)$46,123
Issuance of common stock upon the vesting of restricted stock units1,821,1301——1
Share-based compensation expense——4,325—4,325
Net income———8,5728,572
Balances at December 31, 202556,414,657$56$510,031$(451,066)$59,021
ContentsView on SEC.gov

The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.