Sec Form 13G Filing - Octagon Capital Advisors LP @ ARRIVENT BIOPHARMA INC

Insider filing report for Changes in Beneficial Ownership

Schedule 13G & 13D forms are used to report a party's ownership of stock which exceeds 5% of a company's total stock issue.
Schedule 13G is a shorter version of Schedule 13D with fewer reporting requirements.

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934

(Amendment No. )*

ArriVent BioPharma, Inc.

(Name of Issuer)

Common Stock, $0.0001 par value

(Title of Class of Securities)

	04272N102
	(CUSIP Number)

September 30, 2024
(Date of Event Which Requires Filing of This Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

	x	Rule 13d-1(b)

	o	Rule 13d-1(c)

	o	Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

Page 1 of 10

CUSIP No. 04272N102

NAMES OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

Octagon Capital Advisors LP

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions)

(a)o

(b)o

SEC® USE ONLY

CITIZENSHIP OR PLACE OF ORGANIZATION

Delaware

NUMBER OF

BENEFICIALLY

OWNED BY

EACH REPORTING

PERSON WITH:

SOLE VOTING POWER

SHARED VOTING POWER

1,976.387

SOLE DISPOSITIVE POWER

SHARED DISPOSITIVE POWER

1,976.387

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,976.387
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (see instructions) o
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 5.9%
12	TYPE OF REPORTING PERSON (see instructions) IA, PN

Page 2 of 10

CUSIP No. 04272N102

NAMES OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

Octagon Investments Master Fund LP

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions)

(a)o

(b)o

SEC® USE ONLY

CITIZENSHIP OR PLACE OF ORGANIZATION

Cayman Islands

NUMBER OF

BENEFICIALLY

OWNED BY

EACH REPORTING

PERSON WITH:

SOLE VOTING POWER

SHARED VOTING POWER

782,000

SOLE DISPOSITIVE POWER

SHARED DISPOSITIVE POWER

782,000

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 782,000
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (see instructions) o
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 2.3%
12	TYPE OF REPORTING PERSON (see instructions) OO, PN

Page 3 of 10

CUSIP No. 04272N102

NAMES OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

Octagon Private Opportunities Fund LP

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions)

(a)o

(b)o

SEC® USE ONLY

CITIZENSHIP OR PLACE OF ORGANIZATION

Delaware

NUMBER OF

BENEFICIALLY

OWNED BY

EACH REPORTING

PERSON WITH:

SOLE VOTING POWER

SHARED VOTING POWER

799,911

SOLE DISPOSITIVE POWER

SHARED DISPOSITIVE POWER

799,911

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 799,911
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (see instructions) o
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 2.4%
12	TYPE OF REPORTING PERSON (see instructions) OO, PN

Page 4 of 10

CUSIP No. 04272N102

NAMES OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

Octagon Special Opportunities Fund LP – Series 4

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions)

(a)o

(b)o

SEC® USE ONLY

CITIZENSHIP OR PLACE OF ORGANIZATION

Delaware

NUMBER OF

BENEFICIALLY

OWNED BY

EACH REPORTING

PERSON WITH:

SOLE VOTING POWER

SHARED VOTING POWER

394,476

SOLE DISPOSITIVE POWER

SHARED DISPOSITIVE POWER

394,476

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 394,476
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (see instructions) o
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 1.2%
12	TYPE OF REPORTING PERSON (see instructions) OO, PN

Page 5 of 10

CUSIP No. 04272N102

NAMES OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

Ting Jia

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions)

(a)o

(b)o

SEC® USE ONLY

CITIZENSHIP OR PLACE OF ORGANIZATION

China

NUMBER OF

BENEFICIALLY

OWNED BY

EACH REPORTING

PERSON WITH:

SOLE VOTING POWER

SHARED VOTING POWER

1,976,387

SOLE DISPOSITIVE POWER

SHARED DISPOSITIVE POWER

1,976,387

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,976,387
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (see instructions) o
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 5.9%
12	TYPE OF REPORTING PERSON (see instructions) HC, IN

Page 6 of 10

Item 1(a).	Name of Issuer:

	ArriVent BioPharma, Inc.

Item 1(b).	Address of Issuer’s Principal Executive Offices:

	18 Campus Boulevard, Suite 100, Newtown Square, PA 19073

Item 2(a).	Name of Person Filing:

	This statement is being jointly filed by: Octagon Capital Advisors LP ("Octagon") Octagon Investments Master Fund LP ("Master Fund") Octagon Private Opportunities Fund LP ("Private Fund") Octagon Special Opportunities Fund LP – Series 4 ("Special Fund") Ting Jia, as the principal beneficial owner of Octagon ("Mr. Jia") Each of the foregoing is referred to as a "Reporting Person" and collectively as the "Reporting Persons." Octagon serves as the investment manager of the Master Fund, the Private Fund and the Special Fund. Mr. Jia is the managing member of Octagon. By virtue of these relationships each of Octagon and Mr. Jia may be deemed to beneficially own the Issuer's Common Stock directly owned by the Master Fund, by the Private Fund and by the Special Fund.

Item 2(b).	Address of Principal Business Office or, if none, Residence:

	The address of the business office of each of the Reporting Persons is 654 Madison Avenue, 21^st Floor, New York, NY 10065

Item 2(c).	Citizenship:

	Octagon is a Delaware limited partnership. The Master Fund is an exempted limited partnership established in the Cayman Islands. The Private Fund is a Delaware limited partnership. The Special Fund is a Delaware limited partnership. Mr. Jia is a Chinese citizen.

Item 2(d).	Title of Class of Securities:

	Common Stock, $0.0001 par value (the "Common Stock)

Item 2(e).	CUSIP Number: 04272N102

Page 7 of 10

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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)	o	Broker or dealer registered under Section 15 of the Act;
	(b)	o	Bank as defined in Section 3(a)(6) of the Act;
	(c)	o	Insurance company as defined in Section 3(a)(19) of the Act;
	(d)	o	Investment company registered under Section 8 of the Investment Company Act of 1940;
	(e)	x	An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E);
	(f)	o	An employee benefit plan or endowment fund in accordance with Rule 13d-1(b)(1)(ii)(F);
	(g)	x	A parent holding company or control person in accordance with Rule 13d-1(b)(1)(ii)(G);
	(h)	o	A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
	(i)	o	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;
	(j)	o	A non-U.S. institution in accordance with Rule 240.13d-1(b)(1)(ii)(J);
	(k)	o	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K). If filing as a non-U.S. institution in accordance with Rule 240.13d-1(b)(1)(ii)(J), please specify the type of institution:

Item 4.	Ownership.
	Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.
	(a)	Amount Beneficially Owned:		1,976,387
	(b)	Percent of Class: The percentage reported on this Schedule 13G is calculated based upon 33,585,893 Common Stock outstanding as of August 12, 2024, as reported in the Form 10-Q filed by the Issuer on August 14, 2024.		5.9%
	(c)	Number of shares as to which such person has:
		(i)	sole power to vote or to direct the vote:	0
		(ii)	shared power to vote or to direct the vote:	1,976,387
		(iii)	sole power to dispose or to direct the disposition of:	0
		(iv)	shared power to dispose or to direct the disposition of:	1,976,387

Page 8 of 10

Item 5.	Ownership of Five Percent or Less of a Class.

	If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following o.

Item 6.	Ownership of More than Five Percent on Behalf of Another Person.

	Octagon is the investment advisor to the Master Fund, the Private Fund, the Special Fund and other accounts. Mr. Jia is the control person of Octagon. The Master Fund holds the Common Stock for the benefit of its investors. The Private Fund holds the Common Stock for the benefit of its investors. The Special Fund holds the Common Stock for the benefit of its investors. The Master Fund, the Private Fund, the Special Fund and Octagon, for the benefit of its investors, have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the Common Stock.

Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company.

	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.	Certification.

	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.

Page 9 of 10

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.

Date: October 11, 2024	OCTAGON CAPITAL ADVISORS LP

	/s/ Ting Jia
	Name:	Ting Jia
	Title:	Managing Member


	OCTAGON INVESTMENTS MASTER FUND LP
	By: Octagon Investments GP, LLC, its general partner

	/s/ Ting Jia
	Name:	Ting Jia
	Title:	Managing Member


	OCTAGON PRIVATE OPPORTUNITIES FUND LP By: Octagon Investments GP, LLC, its general partner

	/s/ Ting Jia
	Name:	Ting Jia
	Title:	Managing Member


	OCTAGON SPECIAL OPPORTUNITIES FUND LP – SERIES 4 By: Octagon Investments GP, LLC, its general partner

	/s/ Ting Jia
	Name:	Ting Jia
	Title:	Managing Member


	TING JIA

	/s/ Ting Jia
	Name:	Ting Jia

Page 10 of 10

Sec Form 13G Filing - Octagon Capital Advisors LP filing for ARRIVENT BIOPHARMA INC (AVBP) - 2024-10-11