Aquilo Capital Management, LLC - Aug 20, 2021 Form 4 Insider Report for Spero Therapeutics, Inc. (SPRO)

Role
10%+ Owner
Signature
Aquilo Capital Management, LLC By: its Managing Member, /s/ Marc Schneidman
Stock symbol
SPRO
Transactions as of
Aug 20, 2021
Transactions value $
$6,192,042
Form type
4
Date filed
8/24/2021, 04:28 PM
Next filing
Aug 27, 2021

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction SPRO Common Stock, $0.001 par value Purchase $3.29M +221K +5.78% $14.86* 4.05M Aug 20, 2021 See Footnotes F1, F2
transaction SPRO Common Stock, $0.001 par value Purchase $2.25M +138K +3.4% $16.33* 4.19M Aug 23, 2021 See Footnotes F1, F3
transaction SPRO Common Stock, $0.001 par value Purchase $654K +40.2K +0.96% $16.28* 4.23M Aug 24, 2021 See Footnotes F1, F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
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.
F2 Aquilo Capital, LP owns only 3,378,881 of the 4,050,399 shares deemed to be beneficially owned by Aquilo Capital Management, LLC. Aquilo Capital, LP did not purchase any of the 221,190 shares purchased in this transaction on 08/20/2021.
F3 Aquilo Capital, LP owns only 3,378,881 of the 4,188,234 shares deemed to be beneficially owned by Aquilo Capital Management, LLC. Aquilo Capital, LP did not purchase any of the 137,835 shares purchased in this transaction on 08/23/2021.
F4 Aquilo Capital, LP owns only 3,378,881 of the 4,228,404 shares deemed to be beneficially owned by Aquilo Capital Management, LLC. Aquilo Capital, LP did not purchase any of the 40,170 shares purchased in this transaction on 08/24/2021.