Form Type: 4

SEC EDGAR Link
Accession Number:0001104659-21-077062
Date:2021-06-02
Issuer: 89BIO, INC. (ETNB)
Original Submission Date:

Reporting Person:

RA CAPITAL MANAGEMENT, L.P.
200 BERKELEY STREET, 18TH FLOOR
BOSTON, MA 02116

Reporting Person:

RA CAPITAL HEALTHCARE FUND LP
C/O RA CAPITAL MANAGEMENT, L.P.
200 BERKELEY STREET, 18TH FLOOR BOSTON, MA 02116

Reporting Person:

KOLCHINSKY PETER
C/O RA CAPITAL MANAGEMENT, L.P.
200 BERKELEY STREET, 18TH FLOOR BOSTON, MA 02116

Reporting Person:

SHAH RAJEEV M.
C/O RA CAPITAL MANAGEMENT, L.P.
200 BERKELEY STREET, 18TH FLOOR BOSTON, MA 02116

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 2021-06-02 P 22,138 a $18.77 4,965,769 indirect
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 this transaction was executed in multiple trades at prices ranging from $18.60 to $18.90; the price reported above reflects the weighted average purchase price. the reporting person hereby undertakes to provide full information regarding the number of shares and prices at which these transactions, and all other transactions reported in this form 4, were effected upon request to the sec staff, the issuer, or a security holder of the issuer.
f2 these securities include 4,630,405 shares held directly by ra capital healthcare fund, l.p. (the "fund") and 335,364 shares held by ra capital nexus fund, l.p. ("the nexus fund")
f3 ra capital management, l.p. (the "adviser") is the investment manager for the fund and the nexus fund. the general partner of the adviser is ra capital management gp, llc (the "adviser gp"), of which dr. peter kolchinsky and mr. rajeev shah are the managing members. the adviser, the adviser gp, dr. kolchinsky and mr. shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein.
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