Eikon Therapeutics, Inc. received a Schedule 13G filing from a group of Foresite Capital investment funds and their affiliated managers, disclosing a significant passive ownership stake in its common stock. The filing reports that various Foresite Capital funds and entities collectively attribute beneficial ownership to James B. Tananbaum of 4,148,519 shares, representing 7.7% of the common stock, based on 53,984,337 shares outstanding as of February 4, 2026.
Individual Foresite vehicles report smaller positions, including Foresite Capital Fund IV, L.P. with 1,960,774 shares (3.6%), Foresite Capital Fund V, L.P. with 1,353,168 shares (2.5%), Foresite Capital Opportunity Fund V, L.P. with 425,852 shares (0.8%), and Foresite Capital VI-A, LLC with 408,725 shares (0.8%). Each entity reports sole voting and dispositive power over its shares, with those powers ultimately attributable to Tananbaum through the general partner and managing member structures.
The Reporting Persons certify that the securities were not acquired and are not held for the purpose or effect of changing or influencing control of Eikon Therapeutics, indicating a passive investment posture consistent with a Schedule 13G filing.
Positive
None.
Negative
None.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
Eikon Therapeutics, Inc.
(Name of Issuer)
Common Stock, par value $0.0001
(Title of Class of Securities)
282564103
(CUSIP Number)
02/04/2026
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Rule 13d-1(b)
Rule 13d-1(c)
Rule 13d-1(d)
SCHEDULE 13G
CUSIP No.
282564103
1
Names of Reporting Persons
Foresite Capital Fund IV, L.P.
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
1,960,774.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
1,960,774.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,960,774.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
3.6 %
12
Type of Reporting Person (See Instructions)
PN
Comment for Type of Reporting Person: Note to Row 5: 1,960,774 shares, except that Foresite Capital Management IV, LLC ("FCM IV"), the general partner of Foresite Capital Fund IV, L.P. ("FCF IV"), may be deemed to have sole power to vote these shares, and James Tananbaum ("Tananbaum"), the managing member of FCM IV, may be deemed to have sole power to vote these shares.
Note to Row 6: See response to Row 5.
Note to Row 7: 1,960,774 shares, except that FCM IV, the general partner of FCF IV, may be deemed to have sole power to dispose of these shares, and Tananbaum, the managing member of FCM IV, may be deemed to have sole power to dispose of these shares.
Note to Row 8: See response to Row 7.
Note to Row 11: This percentage is calculated based upon 53,984,337 Common Stock outstanding of Eikon Therapeutics, Inc. (the "Issuer") as of February 4, 2026, as set forth in the Issuer's 424B4 filed with the Securities and Exchange Commission on February 5, 2026.
SCHEDULE 13G
CUSIP No.
282564103
1
Names of Reporting Persons
Foresite Capital Management IV, LLC
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
1,960,774.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
1,960,774.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,960,774.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
3.6 %
12
Type of Reporting Person (See Instructions)
OO
Comment for Type of Reporting Person: Note to Row 5: 1,960,774 shares, all of which are directly owned by FCF IV. FCM IV, the general partner of FCF IV, may be deemed to have sole power to vote these shares, and Tananbaum, the managing member of FCM IV, may be deemed to have sole power to vote these shares.
Note to Row 6: See response to Row 5.
Note to Row 7: 1,960,774 shares, all of which are directly owned by FCF IV. FCM IV, the general partner of FCF IV, may be deemed to have sole power to dispose of these shares, and Tananbaum, the managing member of FCM IV, may be deemed to have sole power to dispose of these shares.
Note to Row 8: See response to Row 7.
Note to Row 11: This percentage is calculated based upon 53,984,337 Common Stock outstanding of the Issuer as of February 4, 2026, as set forth in the Issuer's 424B4 filed with the Securities and Exchange Commission on February 5, 2026.
SCHEDULE 13G
CUSIP No.
282564103
1
Names of Reporting Persons
Foresite Capital Fund V, L.P.
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
1,353,168.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
1,353,168.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,353,168.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
2.5 %
12
Type of Reporting Person (See Instructions)
PN
Comment for Type of Reporting Person: Note to Row 5: 1,353,168 shares, except that Foresite Capital Management V, LLC ("FCM V"), the general partner of Foresite Capital Fund V, L.P. ("FCF V"), may be deemed to have sole power to vote these shares, and Tananbaum, the managing member of FCM V, may be deemed to have sole power to vote these shares.
Note to Row 6: See response to Row 5.
Note to Row 7: 1,353,168 shares, except that FCM V, the general partner of FCF V, may be deemed to have sole power to dispose of these shares, and Tananbaum, the managing member of FCM V, may be deemed to have sole power to dispose of these shares.
Note to Row 8: See response to Row 7.
Note to Row 11: This percentage is calculated based upon 53,984,337 Common Stock outstanding of the Issuer as of February 4, 2026, as set forth in the Issuer's 424B4 filed with the Securities and Exchange Commission on February 5, 2026.
SCHEDULE 13G
CUSIP No.
282564103
1
Names of Reporting Persons
Foresite Capital Management V, LLC
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
1,353,168.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
1,353,168.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,353,168.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
2.5 %
12
Type of Reporting Person (See Instructions)
OO
Comment for Type of Reporting Person: Note to Row 5: 1,353,168 shares, all of which are directly owned by FCF V. FCM V, the general partner of FCF V, may be deemed to have sole power to vote these shares, and Tananbaum, the managing member of FCM V, may be deemed to have sole power to vote these shares.
Note to Row 6: See response to Row 5.
Note to Row 7: 1,353,168 shares, all of which are directly owned by FCF V. FCM V, the general partner of FCF V, may be deemed to have sole power to dispose of these shares, and Tananbaum, the managing member of FCM V, may be deemed to have sole power to dispose of these shares.
Note to Row 8: See response to Row 7.
Note to Row 11: This percentage is calculated based upon 53,984,337 Common Stock outstanding of the Issuer as of February 4, 2026, as set forth in the Issuer's 424B4 filed with the Securities and Exchange Commission on February 5, 2026.
SCHEDULE 13G
CUSIP No.
282564103
1
Names of Reporting Persons
Foresite Capital Opportunity Fund V, L.P.
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
425,852.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
425,852.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
425,852.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
0.8 %
12
Type of Reporting Person (See Instructions)
PN
Comment for Type of Reporting Person: Note to Row 5: 425,852 shares, except that Foresite Capital Opportunity Management V, LLC ("FCM Opp V"), the general partner of Foresite Capital Opportunity Fund V, L.P. ("FCF Opp V"), may be deemed to have sole power to vote these shares, and Tananbaum, the managing member of FCM Opp V, may be deemed to have sole power to vote these shares.
Note to Row 6: See response to Row 5.
Note to Row 7: 425,852 shares, except that FCM Opp V, the general partner of FCF Opp V, may be deemed to have sole power to dispose of these shares, and Tananbaum, the managing member of FCM Opp V, may be deemed to have sole power to dispose of these shares.
Note to Row 8: See response to Row 7.
Note to Row 11: This percentage is calculated based upon 53,984,337 Common Stock outstanding of the Issuer as of February 4, 2026, as set forth in the Issuer's 424B4 filed with the Securities and Exchange Commission on February 5, 2026.
SCHEDULE 13G
CUSIP No.
282564103
1
Names of Reporting Persons
Foresite Capital Opportunity Management V, LLC
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
425,852.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
425,852.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
425,852.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
0.8 %
12
Type of Reporting Person (See Instructions)
OO
Comment for Type of Reporting Person: Note to Row 5: 425,852 shares, all of which are directly owned by FCF Opp V. FCM Opp V, the general partner of FCF Opp V, may be deemed to have sole power to vote these shares, and Tananbaum, the managing member of FCM Opp V, may be deemed to have sole power to vote these shares.
Note to Row 6: See response to Row 5.
Note to Row 7: 425,852 shares, all of which are directly owned by FCF Opp V. FCM Opp V, the general partner of FCF Opp V, may be deemed to have sole power to dispose of these shares, and Tananbaum, the managing member of FCM Opp V, may be deemed to have sole power to dispose of these shares.
Note to Row 8: See response to Row 7.
Note to Row 11: This percentage is calculated based upon 53,984,337 Common Stock outstanding of the Issuer as of February 4, 2026, as set forth in the Issuer's 424B4 filed with the Securities and Exchange Commission on February 5, 2026.
SCHEDULE 13G
CUSIP No.
282564103
1
Names of Reporting Persons
Foresite Capital VI-A, LLC
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
408,725.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
408,725.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
408,725.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
0.8 %
12
Type of Reporting Person (See Instructions)
OO
Comment for Type of Reporting Person: Note to Row 5: 408,725 shares, except that Foresite Capital VI-A Management, LLC ("FCM VI-A"), the managing member of Foresite Capital VI-A, LLC ("FC VI-A"), may be deemed to have sole power to vote these shares, and Tananbaum, the managing member of FC VI-A, may be deemed to have sole power to vote these shares.
Note to Row 6: See response to Row 5.
Note to Row 7: 408,725 shares, except that FCM VI-A, the managing member of FC VI-A, may be deemed to have sole power to dispose of these shares, and Tananbaum, the managing member of FCM VI-A, may be deemed to have sole power to dispose of these shares.
Note to Row 8: See response to Row 7.
Note to Row 11: This percentage is calculated based upon 53,984,337 Common Stock outstanding of the Issuer as of February 4, 2026, as set forth in the Issuer's 424B4 filed with the Securities and Exchange Commission on February 5, 2026.
SCHEDULE 13G
CUSIP No.
282564103
1
Names of Reporting Persons
Foresite Capital VI-A Management, LLC
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
408,725.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
408,725.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
408,725.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
0.8 %
12
Type of Reporting Person (See Instructions)
OO
Comment for Type of Reporting Person: Note to Row 5: 408,725 shares, all of which are directly owned by FC VI-A. FCM VI-A, the managing member of FC VI-A, may be deemed to have sole power to vote these shares, and Tananbaum, the managing member of FCM VI-A, may be deemed to have sole power to vote these shares.
Note to Row 6: See response to Row 5.
Note to Row 7: 408,725 shares, all of which are directly owned by FC VI-A. FCM VI-A, the managing member of FC VI-A, may be deemed to have sole power to dispose of these shares, and Tananbaum, the managing member of FCM VI-A, may be deemed to have sole power to dispose of these shares.
Note to Row 8: See response to Row 7.
Note to Row 11: This percentage is calculated based upon 53,984,337 Common Stock outstanding of the Issuer as of February 4, 2026, as set forth in the Issuer's 424B4 filed with the Securities and Exchange Commission on February 5, 2026.
SCHEDULE 13G
CUSIP No.
282564103
1
Names of Reporting Persons
James B. Tananbaum
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
UNITED STATES
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
4,148,519.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
4,148,519.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
4,148,519.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
7.7 %
12
Type of Reporting Person (See Instructions)
IN
Comment for Type of Reporting Person: Note to Row 5: 4,148,519 shares, of which 1,960,774 shares are directly owned by FCF IV, 1,353,168 shares are directly owned by FCF V, 425,852 shares are directly owned by FCF Opp V and 408,725 shares are directly owned by FC VI-A. Tananbaum is the managing member of each of FCM IV, which is the general partner of FCF IV, FCM V, which is the general partner of FCF V, FCM Opp V, which is the general partner of FCF Opp V and FCM VI-A, which is the managing member of FC VI-A. Tananbaum may be deemed to have sole power to vote these shares.
Note to Row 6: See response to Row 5.
Note to Row 7: 4,148,519 shares, of which 1,960,774 shares are directly owned by FCF IV, 1,353,168 shares are directly owned by FCF V, 425,852 shares are directly owned by FCF Opp V and 408,725 shares are directly owned by FC VI-A. Tananbaum is the managing member of each of FCM IV, which is the general partner of FCF IV, FCM V, which is the general partner of FCF V, FCM Opp V, which is the general partner of FCF Opp V and FCM VI-A, which is the managing member of FC VI-A. Tananbaum may be deemed to have sole power to dispose of these shares.
Note to Row 8: See response to Row 7.
Note to Row 11: This percentage is calculated based upon 53,984,337 Common Stock outstanding of the Issuer as of February 4, 2026, as set forth in the Issuer's 424B4 filed with the Securities and Exchange Commission on February 5, 2026.
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
Eikon Therapeutics, Inc.
(b)
Address of issuer's principal executive offices:
230 Harriet Tubman Way, Millbrae, CA 94030
Item 2.
(a)
Name of person filing:
This Schedule is filed by Foresite Capital Fund IV, L.P., a Delaware limited partnership, Foresite Capital Management IV, LLC, a Delaware limited liability company, Foresite Capital Fund V, L.P., a Delaware limited partnership, Foresite Capital Management V, LLC, a Delaware limited liability company, Foresite Capital Opportunity Fund V, L.P., a Delaware limited partnership, Foresite Capital Opportunity Management V, LLC, a Delaware limited liability company, Foresite Capital VI-A, LLC, a Delaware limited liability company, Foresite Capital VI-A Management, LLC, a Delaware limited liability company and James Tananbaum. The foregoing entities and individuals are collectively referred to as the "Reporting Persons."
(b)
Address or principal business office or, if none, residence:
c/o Foresite Capital Management
9200 W. Sunset Boulevard, Suite 515
West Hollywood, CA 90069
(c)
Citizenship:
See Row 4 of cover page for each Reporting Person.
(d)
Title of class of securities:
Common Stock, par value $0.0001
(e)
CUSIP No.:
282564103
Item 3.
If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)
Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)
Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)
Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)
Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)
An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)
An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)
A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)
A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)
A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)
A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution:
(k)
Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.
Ownership
(a)
Amount beneficially owned:
See Row 9 of cover page for each Reporting Person.
(b)
Percent of class:
See Row 11 of cover page for each Reporting Person.
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
See Row 5 of cover page for each Reporting Person.
(ii) Shared power to vote or to direct the vote:
See Row 6 of cover page for each Reporting Person.
(iii) Sole power to dispose or to direct the disposition of:
See Row 7 of cover page for each Reporting Person.
(iv) Shared power to dispose or to direct the disposition of:
See Row 8 of cover page for each Reporting Person.
Item 5.
Ownership of 5 Percent or Less of a Class.
Not Applicable
Item 6.
Ownership of more than 5 Percent on Behalf of Another Person.
If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required.
Under certain circumstances set forth in the limited partnership agreements of FCF IV, FCF V and FCF Opp V and the limited liability company agreements of FC VI-A, FCM VI-A, FCM IV, FCM V and FCM Opp V, the partners or members, as the case may be, of each of such entities may be deemed to have the right to receive dividends from, or the proceeds from the sale of, shares of the Issuer directly or indirectly owned by each such entity of which they are a partner or member.
Item 7.
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
Not Applicable
Item 8.
Identification and Classification of Members of the Group.
Not Applicable
Item 9.
Notice of Dissolution of Group.
Not Applicable
Item 10.
Certifications:
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
Foresite Capital Fund IV, L.P.
Signature:
/s/ James Tananbaum
Name/Title:
James Tananbaum, Managing Member of the General Partner
Date:
02/11/2026
Foresite Capital Management IV, LLC
Signature:
/s/ James Tananbaum
Name/Title:
James Tananbaum, Managing Member
Date:
02/11/2026
Foresite Capital Fund V, L.P.
Signature:
/s/ James Tananbaum
Name/Title:
James Tananbaum, Managing Member of the General Partner
Date:
02/11/2026
Foresite Capital Management V, LLC
Signature:
/s/ James Tananbaum
Name/Title:
James Tananbaum, Managing Member
Date:
02/11/2026
Foresite Capital Opportunity Fund V, L.P.
Signature:
/s/ James Tananbaum
Name/Title:
James Tananbaum, Managing Member of the General Partner
Date:
02/11/2026
Foresite Capital Opportunity Management V, LLC
Signature:
/s/ James Tananbaum
Name/Title:
James Tananbaum, Managing Member
Date:
02/11/2026
Foresite Capital VI-A, LLC
Signature:
/s/ James Tananbaum
Name/Title:
James Tananbaum, Managing Member of the Managing Member
Date:
02/11/2026
Foresite Capital VI-A Management, LLC
Signature:
/s/ James Tananbaum
Name/Title:
James Tananbaum, Managing Member
Date:
02/11/2026
James B. Tananbaum
Signature:
/s/ James Tananbaum
Name/Title:
James Tananbaum
Date:
02/11/2026
Exhibit Information
Exhibit A
Agreement of Joint Filing
The undersigned hereby agree that a single Schedule 13G (or any amendment thereto) relating to the Common Stock of the Issuer shall be filed on behalf of each of the undersigned and that this Agreement shall be filed as an exhibit to such Schedule 13G.
Date: February 11, 2026
FORESITE CAPITAL FUND IV, L.P.
By: FORESITE CAPITAL MANAGEMENT IV, LLC
Its: General Partner
By: /s/ James Tananbaum
Name: James Tananbaum
Title: Managing Member
FORESITE CAPITAL MANAGEMENT IV, LLC
By: /s/ James Tananbaum
Name: James Tananbaum
Title: Managing Member
FORESITE CAPITAL FUND V, L.P.
By: FORESITE CAPITAL MANAGEMENT V, LLC
Its: General Partner
By: /s/ James Tananbaum
Name: James Tananbaum
Title: Managing Member
FORESITE CAPITAL MANAGEMENT V, LLC
By: /s/ James Tananbaum
Name: James Tananbaum
Title: Managing Member
FORESITE CAPITAL OPPORTUNITY FUND V, L.P.
By: FORESITE CAPITAL OPPORTUNITY MANAGEMENT V, LLC
Its: Managing Member
By: /s/ James Tananbaum
Name: James Tananbaum
Title: Managing Member
FORESITE CAPITAL OPPORTUNITY MANAGEMENT V, LLC
By: /s/ James Tananbaum
Name: James Tananbaum
Title: Managing Member
FORESITE CAPITAL VI-A, LLC
By: FORESITE CAPITAL VI-A MANAGEMENT, LLC
Its: Managing Member
By: /s/ James Tananbaum
Name: James Tananbaum
Title: Managing Member
FORESITE CAPITAL VI-A MANAGEMENT, LLC
By: /s/ James Tananbaum
Name: James Tananbaum
Title: Managing Member
JAMES TANANBAUM
By: /s/ James Tananbaum
Name: James Tananbaum
What ownership stake in Eikon Therapeutics (EIKN) does Foresite Capital report?
Foresite-related entities attribute beneficial ownership of 4,148,519 Eikon Therapeutics shares to James B. Tananbaum, representing 7.7% of the common stock. This percentage is based on 53,984,337 shares outstanding as of February 4, 2026, per Eikon’s referenced prospectus.
Which Foresite Capital funds are included in this Eikon Therapeutics Schedule 13G?
The filing covers Foresite Capital Fund IV, L.P., Foresite Capital Fund V, L.P., Foresite Capital Opportunity Fund V, L.P., Foresite Capital VI-A, LLC and their respective management LLCs, plus James B. Tananbaum, who is managing member of the relevant general partners and managers.
How many Eikon Therapeutics shares does each key Foresite fund beneficially own?
Foresite Capital Fund IV, L.P. reports 1,960,774 shares (3.6%), Foresite Capital Fund V, L.P. 1,353,168 shares (2.5%), Foresite Capital Opportunity Fund V, L.P. 425,852 shares (0.8%), and Foresite Capital VI-A, LLC 408,725 shares (0.8%), each with sole voting and dispositive power.
Is the Foresite Capital stake in Eikon Therapeutics a passive investment?
Yes. The Reporting Persons certify the shares were not acquired and are not held to change or influence control of Eikon Therapeutics. This language, included in Item 10, aligns with a passive investment stance typical for a Schedule 13G filing.
How was the 7.7% ownership percentage in Eikon Therapeutics calculated?
The 7.7% figure is based on 4,148,519 shares beneficially owned by James B. Tananbaum divided by 53,984,337 common shares outstanding of Eikon Therapeutics as of February 4, 2026, using outstanding share data from the company’s referenced 424B4 filing.
Who ultimately controls voting and disposition of the reported Eikon Therapeutics shares?
The filing states that James B. Tananbaum, as managing member of the various Foresite management entities, may be deemed to have sole power to vote and dispose of the reported shares, even though they are directly owned by the individual Foresite funds and entities.
