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Bolt Biotherapeutics, Inc. has five reporting persons reporting beneficial ownership of 412,416 shares, equal to 17.50% of the common stock. Coastlands Capital Partners LP holds the shares directly; Coastlands Capital LP, Coastlands Capital GP LLC, Coastlands Capital LLC and Matthew D. Perry each reported shared voting and dispositive power over them, with no sole voting or dispositive power.
The reporting persons filed jointly but not as members of a group, and each disclaims group membership and beneficial ownership except to the extent of that person’s pecuniary interest. Their calculation uses 1,926,345 shares outstanding as of August 4, 2026, plus 430,746 shares issued on October 23, 2026. It excludes shares issuable upon preferred-stock conversion or warrant exercise in excess of the 4.99% beneficial ownership limitation.
Key Figures
Beneficially owned:412,416 sharesPercent of class:17.50%Beneficial ownership limitation:4.99%+2 more
5 metrics
Beneficially owned412,416 sharesReported by each of the five reporting persons
Percent of class17.50%Reported by each of the five reporting persons
Beneficial ownership limitation4.99%Applies to shares issuable upon preferred-stock conversion and warrant exercise
Shares outstanding1,926,345 sharesAs of August 4, 2026
Shares issued430,746 sharesIssued on October 23, 2026
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
shared voting powerregulatory
"Shared power to vote or to direct the vote"
Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.
beneficial ownership limitationregulatory
"in excess of the beneficial ownership limitation of 4.99%"
A beneficial ownership limitation is a rule that caps the percentage of a company’s shares an investor can be treated as owning or controlling for voting, regulatory or tax purposes. It matters to investors because it can restrict how many shares a person or group can buy or vote, affect takeover chances, and influence share liquidity and value — like a speed limit that prevents any single driver from taking over the whole road.
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
How many BOLT shares did the reporting persons report owning?
The reporting persons reported beneficial ownership of 412,416 shares, or 17.50% of the common stock. Coastlands Capital Partners LP holds the shares directly, and the reporting persons reported shared voting and dispositive power over them.
What BOLT securities are excluded from the reported ownership?
The ownership calculation excludes shares issuable upon conversion of Series D Preferred Stock and exercise of warrants to the extent they exceed the 4.99% beneficial ownership limitation.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
Bolt Biotherapeutics, Inc.
(Name of Issuer)
Common Stock, par value $0.00001 per share
(Title of Class of Securities)
097702203
(CUSIP Number)
10/30/2026
(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)
schemaVersion:
SCHEDULE 13G
CUSIP Number(s):
097702203
1
Names of Reporting Persons
Coastlands Capital LP
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
0.00
6
Shared Voting Power
412,416.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
412,416.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
412,416.00
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)
17.50 %
12
Type of Reporting Person (See Instructions)
IA, PN
Comment for Type of Reporting Person: Consists of shares of Common Stock held directly by Coastlands Capital Partners LP. The calculation of the beneficial ownership of the Reporting Persons is based on 1,926,345 shares of Common Stock outstanding as of August 4, 2026, as disclosed in the Quarterly Report on Form 10-Q filed by the Issuer on August 11, 2026, plus 430,746 shares of Common Stock issued on October 23, 2026, as disclosed in the Current Report on Form 8-K filed by the Issuer on October 23, 2026. Excludes shares of Common Stock issuable upon the conversion of shares of Series D Non-Voting Convertible Preferred Stock, par value $0.00001 per share ("Series D Preferred Stock"), and the exercise of warrants to acquire shares of Common Stock held by the Reporting Persons in excess of the beneficial ownership limitation of 4.99%.
SCHEDULE 13G
CUSIP Number(s):
097702203
1
Names of Reporting Persons
Coastlands Capital Partners LP
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
0.00
6
Shared Voting Power
412,416.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
412,416.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
412,416.00
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)
17.50 %
12
Type of Reporting Person (See Instructions)
PN
Comment for Type of Reporting Person: Consists of shares of Common Stock held directly by Coastlands Capital Partners LP. The calculation of the beneficial ownership of the Reporting Persons is based on 1,926,345 shares of Common Stock outstanding as of August 4, 2026, as disclosed in the Quarterly Report on Form 10-Q filed by the Issuer on August 11, 2026, plus 430,746 shares of Common Stock issued on October 23, 2026, as disclosed in the Current Report on Form 8-K filed by the Issuer on October 23, 2026. Excludes shares of Common Stock issuable upon the conversion of shares of Series D Preferred Stock, and the exercise of warrants to acquire shares of Common Stock held by the Reporting Persons in excess of the beneficial ownership limitation of 4.99%.
SCHEDULE 13G
CUSIP Number(s):
097702203
1
Names of Reporting Persons
Coastlands Capital GP 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
0.00
6
Shared Voting Power
412,416.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
412,416.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
412,416.00
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)
17.50 %
12
Type of Reporting Person (See Instructions)
OO
Comment for Type of Reporting Person: Consists of shares of Common Stock held directly by Coastlands Capital Partners LP. The calculation of the beneficial ownership of the Reporting Persons is based on 1,926,345 shares of Common Stock outstanding as of August 4, 2026, as disclosed in the Quarterly Report on Form 10-Q filed by the Issuer on August 11, 2026, plus 430,746 shares of Common Stock issued on October 23, 2026, as disclosed in the Current Report on Form 8-K filed by the Issuer on October 23, 2026. Excludes shares of Common Stock issuable upon the conversion of shares of Series D Preferred Stock, and the exercise of warrants to acquire shares of Common Stock held by the Reporting Persons in excess of the beneficial ownership limitation of 4.99%.
SCHEDULE 13G
CUSIP Number(s):
097702203
1
Names of Reporting Persons
Coastlands Capital 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
0.00
6
Shared Voting Power
412,416.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
412,416.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
412,416.00
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)
17.50 %
12
Type of Reporting Person (See Instructions)
HC, OO
Comment for Type of Reporting Person: Consists of shares of Common Stock held directly by Coastlands Capital Partners LP. The calculation of the beneficial ownership of the Reporting Persons is based on 1,926,345 shares of Common Stock outstanding as of August 4, 2026, as disclosed in the Quarterly Report on Form 10-Q filed by the Issuer on August 11, 2026, plus 430,746 shares of Common Stock issued on October 23, 2026, as disclosed in the Current Report on Form 8-K filed by the Issuer on October 23, 2026. Excludes shares of Common Stock issuable upon the conversion of shares of Series D Preferred Stock, and the exercise of warrants to acquire shares of Common Stock held by the Reporting Persons in excess of the beneficial ownership limitation of 4.99%.
SCHEDULE 13G
CUSIP Number(s):
097702203
1
Names of Reporting Persons
Matthew D. Perry
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
0.00
6
Shared Voting Power
412,416.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
412,416.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
412,416.00
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)
17.50 %
12
Type of Reporting Person (See Instructions)
HC, IN
Comment for Type of Reporting Person: Consists of shares of Common Stock held directly by Coastlands Capital Partners LP. The calculation of the beneficial ownership of the Reporting Persons is based on 1,926,345 shares of Common Stock outstanding as of August 4, 2026, as disclosed in the Quarterly Report on Form 10-Q filed by the Issuer on August 11, 2026, plus 430,746 shares of Common Stock issued on October 23, 2026, as disclosed in the Current Report on Form 8-K filed by the Issuer on October 23, 2026. Excludes shares of Common Stock issuable upon the conversion of shares of Series D Preferred Stock, and the exercise of warrants to acquire shares of Common Stock held by the Reporting Persons in excess of the beneficial ownership limitation of 4.99%.
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
Bolt Biotherapeutics, Inc.
(b)
Address of issuer's principal executive offices:
900 Chesapeake Drive, Redwood City, CA 94063
Item 2.
(a)
Name of person filing:
Coastlands Capital LP, a Delaware limited partnership ("Coastlands")
Coastlands Capital Partners LP, a Delaware limited partnership (the "Partnership")
Coastlands Capital GP LLC, a Delaware limited liability company (the "General Partner")
Coastlands Capital LLC, a Delaware limited liability company ("Coastlands GP")
Matthew D. Perry
Coastlands and the General Partner are the investment adviser and general partner, respectively, of the Partnership. Coastlands GP is the general partner of Coastlands. Mr. Perry is the control person of Coastlands, the Partnership, Coastlands GP and the General Partner. The reporting persons are filing this Schedule 13G jointly, but not as members of a group, and each disclaims membership in a group. Each reporting person also disclaims beneficial ownership of Common Stock except to the extent of that person's pecuniary interest therein. In addition, the filing of this Schedule 13G on behalf of the Partnership should not be construed as an admission that it is, and it disclaims that it is, a beneficial owner, as defined in Rule 13d-3 under the Act, of any Common Stock covered by this Schedule 13G.
(b)
Address or principal business office or, if none, residence:
601 California Street, Suite 1210, San Francisco, CA 94108
(c)
Citizenship:
See Item 4 of the cover sheet for each reporting person.
(d)
Title of class of securities:
Common Stock, par value $0.00001 per share
(e)
CUSIP Number(s):
097702203
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:
Coastlands: 412,416
Partnership: 412,416
General Partner: 412,416
Coastlands GP: 412,416
Matthew D. Perry: 412,416
(b)
Percent of class:
Coastlands: 17.50%
Partnership: 17.50%
General Partner: 17.50%
Coastlands GP: 17.50%
Matthew D. Perry: 17.50%
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
Coastlands: 0
Partnership: 0
General Partner: 0
Coastlands GP: 0
Matthew D. Perry: 0
(ii) Shared power to vote or to direct the vote:
Coastlands: 412,416
Partnership: 412,416
General Partner: 412,416
Coastlands GP: 412,416
Matthew D. Perry: 412,416
(iii) Sole power to dispose or to direct the disposition of:
Coastlands: 0
Partnership: 0
General Partner: 0
Coastlands GP: 0
Matthew D. Perry: 0
(iv) Shared power to dispose or to direct the disposition of:
Coastlands: 412,416
Partnership: 412,416
General Partner: 412,416
Coastlands GP: 412,416
Matthew D. Perry: 412,416
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.
The Partnership holds the shares of Common Stock, including shares of Common Stock issuable upon conversion of shares of Series D Preferred Stock and shares of Common Stock issuable upon exercise of warrants to acquire shares of Common Stock, for the benefit of its investors and has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, shares of Common Stock, including shares of Common Stock issuable upon conversion of shares of Series D Preferred Stock and shares of Common Stock issuable upon exercise of warrants to acquire shares of Common Stock.
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 acquired and are held in the ordinary course of business and 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.
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.
Coastlands Capital LP
Signature:
/s/ Mark Shamia
Name/Title:
Chief Operating Officer of the General Partner, Coastlands Capital LLC
Date:
11/06/2026
Coastlands Capital Partners LP
Signature:
/s/ Mark Shamia
Name/Title:
Chief Operating Officer of the General Partner, Coastlands Capital GP LLC
Date:
11/06/2026
Coastlands Capital GP LLC
Signature:
/s/ Mark Shamia
Name/Title:
Chief Operating Officer
Date:
11/06/2026
Coastlands Capital LLC
Signature:
/s/ Mark Shamia
Name/Title:
Chief Operating Officer
Date:
11/06/2026
Matthew D. Perry
Signature:
/s/ Matthew D. Perry
Name/Title:
Reporting Person
Date:
11/06/2026
Exhibit Information
Exhibit 99.1 - Agreement Regarding Joint Filing of Statement on Schedule 13D or 13G
