BAKER BROS. ADVISORS LP - 30 Sep 2025 Form 4 Insider Report for KALA BIO, Inc. (KALA)

Signature
By: Baker Bros. Advisors LP, Name: Scott L. Lessing, Title: President /s/ Scott L. Lessing
Issuer symbol
KALA
Transactions as of
30 Sep 2025
Net transactions value
-$1,056,722
Form type
4
Filing time
02 Oct 2025, 16:47:53 UTC
Previous filing
10 Sep 2025
Next filing
12 Nov 2025

Reporting Owners (4)

Name Relationship Address Signature Signature date CIK
BAKER BROS. ADVISORS LP Former 10% owner 860 WASHINGTON STREET, 3RD FLOOR, NEW YORK By: Baker Bros. Advisors LP, Name: Scott L. Lessing, Title: President /s/ Scott L. Lessing 02 Oct 2025 0001263508
Baker Bros. Advisors (GP) LLC Former 10% owner 860 WASHINGTON STREET, 3RD FLOOR, NEW YORK By: Baker Bros. Advisors (GP) LLC, Name: Scott L. Lessing, Title: President /s/ Scott L. Lessing 02 Oct 2025 0001580575
BAKER FELIX Former 10% owner 860 WASHINGTON STREET, 3RD FLOOR, NEW YORK /s/ Felix J. Baker 02 Oct 2025 0001087940
BAKER JULIAN Former 10% owner 860 WASHINGTON STREET, 3RD FLOOR, NEW YORK /s/ Julian C. Baker 02 Oct 2025 0001087939

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction KALA Common Stock Sale $34,114 -21,376 -18% $1.60 97,120 30 Sep 2025 See Footnotes F1, F2, F3, F4
transaction KALA Common Stock Sale $311,879 -195,425 -18% $1.60 887,973 30 Sep 2025 See Footnotes F1, F3, F4, F5
transaction KALA Common Stock Sale $70,076 -50,640 -52% $1.38 46,480 01 Oct 2025 See Footnotes F2, F3, F4, F6
transaction KALA Common Stock Sale $640,654 -462,967 -52% $1.38 425,006 01 Oct 2025 See Footnotes F3, F4, F5, F6
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

BAKER BROS. ADVISORS LP is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may continue.

Explanation of Responses:

Id Content
F1 The price reported in Column 4 is a weighted average price. These shares of common stock ("Common Stock") of KALA BIO, Inc. (the "Issuer") were traded by 667, L.P. ("667") and Baker Brothers Life Sciences, L.P. ("Life Sciences", and together with 667, the "Funds") in multiple transactions at prices ranging from $1.50 to $1.84, inclusive. The reporting persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission (the "Staff"), upon request, full information regarding the number of shares traded at each separate price within the range set forth in this footnote.
F2 After giving effect to the transactions reported herein and as a result of their ownership interest in (i) Baker Biotech Capital, L.P. and (ii) 667, Julian C. Baker and Felix J. Baker each may be deemed to have an indirect pecuniary interest in Common Stock reported in column 5 of Table I directly held by 667, a limited partnership of which the sole general partner is Baker Biotech Capital, L.P., a limited partnership of which the sole general partner is Baker Biotech Capital (GP), LLC, due to their interest in 667 and Baker Biotech Capital, L.P.'s right to receive an allocation of a portion of the profits from 667.
F3 Baker Bros. Advisors LP (the "Adviser") serves as the investment adviser to the Funds. In connection with the services provided by the Adviser, the Adviser receives an asset-based management fee that does not confer any pecuniary interest in the securities held directly by the Funds. Baker Bros. Advisors (GP) LLC (the "Adviser GP") is the Adviser's sole general partner. Julian C. Baker and Felix J. Baker are managing members of the Adviser GP. The Adviser has complete and unlimited discretion and authority with respect to the investment and voting power of the securities held directly by the Funds. The general partners of the Funds relinquished to the Adviser all discretion and authority with respect to the investment and voting power of the securities held directly by the Funds.
F4 Julian C. Baker, Felix J. Baker, the Adviser GP and the Adviser disclaim beneficial ownership of the securities held directly by the Funds except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that any of Julian C. Baker, Felix J. Baker, the Adviser GP or the Adviser is a beneficial owner of such securities for purposes of Section 16 or any other purpose.
F5 After giving effect to the transactions reported herein and as a result of their ownership interest in (i) Baker Brothers Life Sciences Capital, L.P. and (ii) Life Sciences, Julian C. Baker and Felix J.Baker each may be deemed to have an indirect pecuniary interest in Common Stock reported in column 5 of Table I directly held by Life Sciences, a limited partnership of which the sole general partner is Baker Brothers Life Sciences Capital, L.P., a limited partnership of which the sole general partner is Baker Brothers Life Sciences Capital (GP), LLC, due to their interest in Life Sciences and Baker Brothers Life Sciences Capital, L.P.'s right to receive an allocation of a portion of the profits from Life Sciences.
F6 The price reported in Column 4 is a weighted average price. These shares were traded by 667 and Life Sciences in multiple transactions at prices ranging from $1.27 to $1.48, inclusive. The reporting persons undertake to provide to the Issuer, any security holder of the Issuer, or the Staff, upon request, full information regarding the number of shares traded at each separate price within the range set forth in this footnote.