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Aspen Neuroscience: OrbiMed buys 1M IPO shares

Conversions from Series Seed-2, Series A-1, Series A-2, Series B and Series C preferred stock each have a separately stated common-share amount.

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Form Type
4

Rhea-AI Filing Summary

For Aspen Neuroscience, Inc. (ASPE), director and 10% owner Peter A. Thompson reported that OrbiMed Private Investments VII, LP purchased 1,000,000 common shares in the initial public offering at $15 per share on November 2, 2026. The partnership’s preferred-stock holdings automatically converted into common stock on a 1-for-9.8821 basis upon completion of the IPO, for no additional consideration. No Rule 10b5-1 plan is reported for the purchase.

Insider Thompson Peter A.
Role Director, 10% Owner
Bought 1,000,000 shs ($15.00M)
Increase in Position 38.6%
Type Security Shares Price Value
Conversion Series Seed-2 Convertible Preferred Stock F1, F3, F4 196,541 $0.00 $0.00
Conversion Series A-1 Convertible Preferred Stock F1, F3, F4 642,745 $0.00 $0.00
Conversion Series A-2 Convertible Preferred Stock F1, F3, F4 616,984 $0.00 $0.00
Conversion Series B Convertible Preferred Stock F1, F3, F4 625,743 $0.00 $0.00
Conversion Series C Convertible Preferred Stock F1, F3, F4 507,119 $0.00 $0.00
Conversion Common Stock F1, F3, F4 196,541 -- --
Conversion Common Stock F1, F3, F4 642,745 -- --
Conversion Common Stock F1, F3, F4 616,984 -- --
Conversion Common Stock F1, F3, F4 625,743 -- --
Conversion Common Stock F1, F3, F4 507,119 -- --
Purchase Common Stock F2, F3, F4 1,000,000 $15.00 $15.00M
Holdings After Transaction: Series Seed-2 Convertible Preferred Stock — 0 contracts (Indirect, See footnotes); Series A-1 Convertible Preferred Stock — 0 contracts (Indirect, See footnotes); Series A-2 Convertible Preferred Stock — 0 contracts (Indirect, See footnotes); Series B Convertible Preferred Stock — 0 contracts (Indirect, See footnotes); Series C Convertible Preferred Stock — 0 contracts (Indirect, See footnotes); Common Stock — 3,589,132 shares (Indirect, See footnotes)
Holdings Before and After: Series Seed-2 Convertible Preferred Stock, 196,541 to 0 contracts (Indirect, See footnotes); Series A-1 Convertible Preferred Stock, 642,745 to 0 contracts (Indirect, See footnotes); Series A-2 Convertible Preferred Stock, 616,984 to 0 contracts (Indirect, See footnotes); Series B Convertible Preferred Stock, 625,743 to 0 contracts (Indirect, See footnotes); Series C Convertible Preferred Stock, 507,119 to 0 contracts (Indirect, See footnotes); Common Stock, 0 to 3,589,132 shares (Indirect, See footnotes)
Other Insiders: 3 other insiders reported open-market purchases of this stock in the 30 days up to this filing.
Footnotes (4)
  1. F1. Pursuant to the Issuer's Amended and Restated Certificate of Incorporation, as amended, each share of Series Seed-2 Convertible Preferred Stock, Series A-1 Convertible Preferred Stock, Series A-2 Convertible Preferred Stock, Series B Convertible Preferred Stock, and Series C Convertible Preferred Stock (collectively, the "Preferred Stock") was convertible, at the option of the holder, at any time. In connection with the completion of the Issuer's initial public offering of its Common Stock, each share of Preferred Stock automatically converted on a 1-for-9.8821 basis into shares of Common Stock, for no additional consideration. Share numbers give effect to such conversion. The securities have no expiration date.
  2. F2. Reflects shares of the Issuer's Common Stock purchased in the Issuer's initial public offering.
  3. F3. Securities held by OrbiMed Private Investments VII, LP ("OPI VII"). OrbiMed Capital GP VII LLC ("OrbiMed GP") is the general partner of OPI VII. OrbiMed Advisors LLC ("OrbiMed Advisors") is the managing member of OrbiMed GP. By virtue of such relationships, OrbiMed GP and OrbiMed Advisors may be deemed to have voting and investment power with respect to the shares held by OPI VII. OrbiMed Advisors exercises investment and voting power through a management committee comprised of Carl L. Gordon, W. Carter Neild, and Geoffrey C. Hsu, each of whom disclaims beneficial ownership of the shares held by OPI VII, except to the extent of its or his pecuniary interest therein if any.
  4. F4. Each of the Reporting Person, OrbiMed Advisors, and OrbiMed GP disclaims beneficial ownership of the securities reported herein for purposes of Rule 16a-1(a) under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of its pecuniary interest therein, if any. This report shall not be deemed an admission that any of the Reporting Person, OrbiMed Advisors, or OrbiMed GP is a beneficial owner of such securities for purposes of Section 16 of the Exchange Act, or for any other purpose.
Common shares purchased 1,000,000 shares IPO purchase on November 2, 2026
Purchase price $15 per share IPO purchase on November 2, 2026
Preferred-to-common conversion ratio 1-for-9.8821 Automatic conversion upon completion of the IPO
Series Seed-2 common shares 196,541 shares Listed conversion-related common shares on November 2, 2026
Series A-1 common shares 642,745 shares Listed conversion-related common shares on November 2, 2026
Series A-2 common shares 616,984 shares Listed conversion-related common shares on November 2, 2026
Series B common shares 625,743 shares Listed conversion-related common shares on November 2, 2026
Series C common shares 507,119 shares Listed conversion-related common shares on November 2, 2026
initial public offering financial
"shares of the Issuer's Common Stock purchased in the Issuer's initial public offering"
An initial public offering (IPO) is when a private company first sells its shares to the public and becomes a stock-listed company. It matters because it allows the company to raise money from a wide range of investors, helping it grow, while giving early shareholders a way to sell some of their ownership.
Amended and Restated Certificate of Incorporation regulatory
"Pursuant to the Issuer's Amended and Restated Certificate of Incorporation"
A company’s amended and restated certificate of incorporation is an updated version of its foundational legal charter that replaces the older document and folds in all changes into one clear copy; it spells out corporate structure, classes of stock, shareholder rights and key governance rules. Investors care because it can change who controls the company, how votes are counted, what claims shareholders have on assets or dividends, and can introduce or remove protections against takeovers—like updating a house title after a major renovation to show who owns what and under what rules.
voting and investment power regulatory
"may be deemed to have voting and investment power"
pecuniary interest regulatory
"except to the extent of its pecuniary interest therein if any"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many ASPE shares did OrbiMed Private Investments VII buy in the IPO?

OrbiMed Private Investments VII, LP purchased 1,000,000 Aspen Neuroscience common shares at $15 per share on November 2, 2026. Peter A. Thompson, a director and 10% owner, was the reporting person; the securities were held by the partnership. No Rule 10b5-1 plan is reported for the purchase.

What preferred stock converted into ASPE common shares?

Series Seed-2, Series A-1, Series A-2, Series B and Series C convertible preferred stock automatically converted into common stock on a 1-for-9.8821 basis for no additional consideration when the IPO was completed. The listed common-share amounts, respectively, were 196,541, 642,745, 616,984, 625,743 and 507,119.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Thompson Peter A.

(Last)(First)(Middle)
C/O ASPEN NEUROSCIENCE, INC.
10835 ROAD TO THE CURE, SUITE 100

(Street)
SAN DIEGO CALIFORNIA 92121

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Aspen Neuroscience, Inc. [ ASPE ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirectorX10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
11/02/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock11/02/2026C196,541A(1)196,541ISee footnotes(3)(4)
Common Stock11/02/2026C642,745A(1)839,286ISee footnotes(3)(4)
Common Stock11/02/2026C616,984A(1)1,456,270ISee footnotes(3)(4)
Common Stock11/02/2026C625,743A(1)2,082,013ISee footnotes(3)(4)
Common Stock11/02/2026C507,119A(1)2,589,132ISee footnotes(3)(4)
Common Stock11/02/2026P1,000,000(2)A$153,589,132ISee footnotes(3)(4)
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Series Seed-2 Convertible Preferred Stock(1)11/02/2026C196,541 (1) (1)Common Stock196,541$00ISee footnotes(3)(4)
Series A-1 Convertible Preferred Stock(1)11/02/2026C642,745 (1) (1)Common Stock642,745$00ISee footnotes(3)(4)
Series A-2 Convertible Preferred Stock(1)11/02/2026C616,984 (1) (1)Common Stock616,984$00ISee footnotes(3)(4)
Series B Convertible Preferred Stock(1)11/02/2026C625,743 (1) (1)Common Stock625,743$00ISee footnotes(3)(4)
Series C Convertible Preferred Stock(1)11/02/2026C507,119 (1) (1)Common Stock507,119$00ISee footnotes(3)(4)
Explanation of Responses:
1. Pursuant to the Issuer's Amended and Restated Certificate of Incorporation, as amended, each share of Series Seed-2 Convertible Preferred Stock, Series A-1 Convertible Preferred Stock, Series A-2 Convertible Preferred Stock, Series B Convertible Preferred Stock, and Series C Convertible Preferred Stock (collectively, the "Preferred Stock") was convertible, at the option of the holder, at any time. In connection with the completion of the Issuer's initial public offering of its Common Stock, each share of Preferred Stock automatically converted on a 1-for-9.8821 basis into shares of Common Stock, for no additional consideration. Share numbers give effect to such conversion. The securities have no expiration date.
2. Reflects shares of the Issuer's Common Stock purchased in the Issuer's initial public offering.
3. Securities held by OrbiMed Private Investments VII, LP ("OPI VII"). OrbiMed Capital GP VII LLC ("OrbiMed GP") is the general partner of OPI VII. OrbiMed Advisors LLC ("OrbiMed Advisors") is the managing member of OrbiMed GP. By virtue of such relationships, OrbiMed GP and OrbiMed Advisors may be deemed to have voting and investment power with respect to the shares held by OPI VII. OrbiMed Advisors exercises investment and voting power through a management committee comprised of Carl L. Gordon, W. Carter Neild, and Geoffrey C. Hsu, each of whom disclaims beneficial ownership of the shares held by OPI VII, except to the extent of its or his pecuniary interest therein if any.
4. Each of the Reporting Person, OrbiMed Advisors, and OrbiMed GP disclaims beneficial ownership of the securities reported herein for purposes of Rule 16a-1(a) under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of its pecuniary interest therein, if any. This report shall not be deemed an admission that any of the Reporting Person, OrbiMed Advisors, or OrbiMed GP is a beneficial owner of such securities for purposes of Section 16 of the Exchange Act, or for any other purpose.
/s/ Peter A. Thompson11/04/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

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