Adage Capital group (SCYX) discloses 1,041,824-share SCYNEXIS stake including warrants

Rhea-AI Filing Summary

Adage Capital Management, L.P., together with Robert Atchinson and Phillip Gross, reports beneficial ownership of 1,041,824 shares of SCYNEXIS, Inc. common stock, including 498,346 shares issuable upon exercise of warrants. This position represents 9.99% of the outstanding common stock, based on approximately 9,930,329 shares outstanding after giving effect to a one-for-eight reverse stock split effective May 29, 2026.

All 1,041,824 shares are reported with shared voting and dispositive power and no sole voting or dispositive power. The shares are directly held by Adage Capital Partners, L.P., with Adage Capital Management, L.P. as investment manager and Messrs. Atchinson and Gross reporting through their roles in affiliated entities.

Key Figures

Beneficial ownership shares: 1,041,824 shares Warrant-linked shares: 498,346 shares Ownership percentage: 9.99% +3 more

6 metrics

Beneficial ownership shares 1,041,824 shares Total SCYNEXIS common stock beneficially owned by the Adage reporting group

Warrant-linked shares 498,346 shares Portion of beneficial ownership issuable upon exercise of warrants

Ownership percentage 9.99% Percentage of SCYNEXIS common stock beneficially owned by the reporting persons

Shares outstanding baseline 9,930,329 shares Approximate SCYNEXIS shares outstanding used to compute ownership percentage after one-for-eight reverse split

Pre-split shares outstanding 79,442,633 shares Common shares outstanding as of May 1, 2026, before one-for-eight reverse split adjustment

Reverse split ratio one-for-eight Reverse split of SCYNEXIS common stock effective May 29, 2026

Key Terms

beneficial ownership, warrants, reverse split, shared voting power, +2 more

6 terms

beneficial ownership financial

"The filing of this statement should not be construed in and of itself as an admission by any Reporting Person as to beneficial ownership"

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.

warrants financial

"Includes 498,346 shares of Common Stock issuable upon exercise of warrants."

Warrants are special documents that give you the right to buy a company's stock at a set price before a certain date. They are often used as a way for companies to attract investors or raise money, and their value can increase if the company's stock price goes up.

reverse split financial

"to give effect to the one-for-eight reverse split of the Common stock effective as of May 29, 2026"

A reverse split is when a company reduces the number of its outstanding shares by combining several existing shares into one new share, so the price per share rises proportionally while the company’s overall value stays the same. Investors care because it can make a stock appear more respectable or meet exchange rules — like turning many small coins into a single larger bill — but it can also signal financial trouble and often affects trading liquidity and investor perception.

shared voting power financial

"Shared Voting Power 1,041,824.00"

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.

shared dispositive power financial

"Shared Dispositive Power 1,041,824.00"

Investment Company Act of 1940 regulatory

"A listing of the shareholders of an investment company registered under the Investment Company Act of 1940"

A U.S. federal law that sets the rulebook for pooled investment vehicles such as mutual funds, exchange-traded funds and similar money managers, requiring them to register with regulators, disclose holdings and fees, limit conflicts of interest, and follow governance standards. It matters to investors because these protections and transparency rules act like a referee and scoreboard, helping people compare funds, trust that managers follow fair practices, and spot hidden costs or risks.

FAQ

How much of SCYX does Adage Capital Management beneficially own?

Adage Capital Management and related parties report beneficial ownership of 1,041,824 SCYNEXIS (SCYX) shares, including 498,346 shares issuable upon exercise of warrants, representing 9.99% of the company’s outstanding common stock after a one-for-eight reverse split.

What percentage of SCYX’s common stock is held by the Adage reporting group?

The Adage reporting group holds 9.99% of SCYNEXIS (SCYX) common stock. This percentage is based on approximately 9,930,329 shares outstanding after a one-for-eight reverse split effective May 29, 2026, and includes shares issuable upon warrant exercise.

How many SCYX shares held by Adage are tied to warrants?

Of the 1,041,824 SCYNEXIS (SCYX) shares reported, 498,346 are issuable upon exercise of warrants. The remainder of the position consists of currently outstanding common shares held through Adage Capital Partners, L.P.

What share count did Adage use to calculate its 9.99% ownership in SCYX?

The 9.99% ownership is calculated using approximately 9,930,329 SCYNEXIS (SCYX) shares outstanding. This reflects 79,442,633 shares as of May 1, 2026, adjusted for a one-for-eight reverse split effective May 29, 2026, plus warrant shares held by Adage.

Do Adage and its principals have sole or shared voting power over SCYX shares?

Adage and its principals report 0 shares with sole voting or dispositive power and 1,041,824 shares with shared voting and shared dispositive power in SCYNEXIS (SCYX), reflecting the position held through Adage Capital Partners, L.P.

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Available on EDGAR 08/12/2026 - 12:09 PM Accepted by SEC EDGAR 08/12/2026 - 12:09 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

SCYNEXIS, Inc.

(Name of Issuer)

Common Stock, par value $0.001 per share

(Title of Class of Securities)

811292309

(CUSIP Number)

06/30/2026

(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): 811292309

1

Names of Reporting Persons

Adage Capital Management, 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 0.00
6	Shared Voting Power 1,041,824.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,041,824.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,041,824.00

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)

9.99 %

12

Type of Reporting Person (See Instructions)

IA, PN

Comment for Type of Reporting Person: Includes 498,346 shares of Common Stock issuable upon exercise of warrants.

SCHEDULE 13G

CUSIP Number(s): 811292309

1

Names of Reporting Persons

Robert Atchinson

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 1,041,824.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,041,824.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,041,824.00

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)

9.99 %

12

Type of Reporting Person (See Instructions)

HC, IN

Comment for Type of Reporting Person: Includes 498,346 shares of Common Stock issuable upon exercise of warrants.

SCHEDULE 13G

CUSIP Number(s): 811292309

1

Names of Reporting Persons

Phillip Gross

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 1,041,824.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,041,824.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,041,824.00

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)

9.99 %

12

Type of Reporting Person (See Instructions)

HC, IN

Comment for Type of Reporting Person: Includes 498,346 shares of Common Stock issuable upon exercise of warrants.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: SCYNEXIS, Inc.
(b)	Address of issuer's principal executive offices: 1280 Rancho Conejo Boulevard, Thousand Oaks, California 91320
Item 2.
(a)	Name of person filing: This statement is filed by: (i) Adage Capital Management, L.P., a Delaware limited partnership ("ACM"), as the investment manager of Adage Capital Partners, L.P., a Delaware limited partnership ("ACP"), with respect to the common stock, par value $0.001 per share ("Common Stock") of SCYNEXIS, Inc., a Delaware corporation (the "Company") directly held by ACP; (ii) Robert Atchinson ("Mr. Atchinson"), as (1) managing member of Adage Capital Advisors, L.L.C., a limited liability company organized under the laws of the State of Delaware ("ACA"), managing member of Adage Capital Partners GP, L.L.C., a limited liability company organized under the laws of the State of Delaware ("ACPGP"), general partner of ACP, and (2) managing member of Adage Capital Partners, L.L.C., a Delaware limited liability company ("ACPLLC"), general partner of ACM, with respect to the Common Stock directly held by ACP; and (iii) Phillip Gross ("Mr. Gross"), as (1) managing member of ACA, managing member of ACPGP, and (2) managing member of ACPLLC, general partner of ACM, with respect to the Common Stock directly held by ACP. The foregoing persons are hereinafter sometimes collectively referred to as the "Reporting Persons." Any disclosures herein with respect to persons other than the Reporting Persons are made on information and belief after making inquiry to the appropriate party. The filing of this statement should not be construed in and of itself as an admission by any Reporting Person as to beneficial ownership of the securities reported herein.
(b)	Address or principal business office or, if none, residence: The address of the business office of each of the Reporting Persons is 200 Clarendon Street, 52nd Floor, Boston, Massachusetts 02116.
(c)	Citizenship: ACM is a limited partnership organized under the laws of the State of Delaware. Messrs. Gross and Atchinson are citizens of the United States.
(d)	Title of class of securities: Common Stock, par value $0.001 per share
(e)	CUSIP Number(s): 811292309
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: The information required by Item 4(a) is set forth in Row 9 of the cover page for each of the Reporting Persons and is incorporated herein by reference. The percentage set forth in this Schedule 13G is calculated based upon an aggregate of approximately 9,930,329 shares of Common Stock outstanding, which is the quotient obtained by dividing (i) the 79,442,633 shares of Common Stock outstanding as of May 1, 2026, as reported in the Company's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2026, filed with the Securities and Exchange Commission on May 11, 2026, by (ii) eight, to give effect to the one-for-eight reverse split of the Common stock effective as of May 29, 2026, as described in the Company's Current Report on Form 8-K filed with the Securities and Exchange Commission on May 29, 2026, and assumes the exercise of warrants (the "Reported Warrants") held by ACM.
(b)	Percent of class: 9.99%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: The information required by Item 4(c)(i) is set forth in Row 5 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
	(ii) Shared power to vote or to direct the vote: The information required by Item 4(c)(ii) is set forth in Row 6 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
	(iii) Sole power to dispose or to direct the disposition of: The information required by Item 4(c)(iii) is set forth in Row 7 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
	(iv) Shared power to dispose or to direct the disposition of: The information required by Item 4(c)(iv) is set forth in Row 8 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
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. See Item 2(a).
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.

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.

Adage Capital Management, L.P.

Signature:	/s/ Robert Atchinson
Name/Title:	By: Adage Capital Partners, L.L.C., its General Partner, By: Robert Atchinson, its Managing Member
Date:	08/12/2026

Robert Atchinson

Signature:	/s/ Robert Atchinson
Name/Title:	Robert Atchinson, individually
Date:	08/12/2026

Phillip Gross

Signature:	/s/ Phillip Gross
Name/Title:	Phillip Gross, individually
Date:	08/12/2026

Exhibit Information

Exhibit 99.1: Joint Filing Agreement