Form Type: 4

SEC EDGAR Link
Accession Number:0001591986-20-000016
Date:2020-11-09
Issuer: SPERO THERAPEUTICS, INC. (SPRO)
Original Submission Date:

Reporting Person:

AQUILO CAPITAL MANAGEMENT, LLC
ONE LETTERMAN DRIVE
SUITE D4900, BUILDING D SAN FRANCISCO, CA 94129

Reporting Person:

AQUILO CAPITAL, L.P.
ONE LETTERMAN DRIVE, SUITE D4900
BUILDING D, THE PRESIDIO SAN FRANCISCO, CA 94129

Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
Title of SecurityTransaction Date2a. Deemed Execution Date Transaction CodeSharesAcquired or DisposedPrice per share 5. Amount of Securities Beneficially Owned Following Reported Transaction 6. Ownership Form Direct or IndirectNature of Indirect Ownership
COMMON STOCK, $0.001 PAR VALUE 2020-11-09 S 125,900 d $13.77 4,197,142 indirect f1
Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, convertible securities
Title of Derivative Security Conversion or Exercise Price of Derivative Security Transaction Date Deemed Execution Date Transaction Code Number of Derivative Securities Acquired (A) or Disposed of (D) Date ExercisableExpiration Date Title and Amount of Securities Underlying Derivative Security Price of Derivative Security Number of derivative Securities Beneficially Owned Following Reported Transaction(s) Ownership Form: Direct (D) or Indirect (I) Nature of Indirect Beneficial Ownership
Footnotes
IDfootnote
f1 the reporting persons are aquilo capital, l.p. (the "fund"), aquilo capital management, llc ("aquilo") and marc r. schneidman. aquilo is the general partner and investment adviser of the fund and other funds managed by aquilo that hold securities directly for the benefit of their investors. aquilo may be deemed to beneficially own such securities indirectly as the investment adviser and general partner of the fund and affiliated funds, and mr. schneidman may be deemed to beneficially own them indirectly as the control person of aquilo. each of aquilo,the fund and mr. schneidman disclaims beneficial ownership of such securities except to the extent of his or its pecuniary interest therein.
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