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Obsidian CMO reports stock option holdings

Obsidian Therapeutics, Inc. reports the initial equity holdings of Chief Medical Officer Hari Parameswaran.

(Neutral)
(Neutral)
Form Type
3

Rhea-AI Filing Summary

Obsidian Therapeutics, Inc. reports the initial equity holdings of Chief Medical Officer Hari Parameswaran. The filing lists several stock options (right to buy) over Common Stock with an exercise price of $0.7800 per share and expirations on February 27, 2033 and June 24, 2034. One option covering 1,770,369 underlying shares began vesting with 25% exercisable on January 17, 2024, with the balance vesting in twelve equal quarterly installments, subject to continued service. Additional options over 48,685 and 97,370 underlying shares are fully vested and exercisable. A further option for 943,500 underlying shares vests in sixteen equal monthly installments following June 25, 2024, also conditioned on continued service. No purchases or sales are reported; this statement records existing option positions.

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Insider Hari Parameswaran
Role Chief Medical Officer
Type Security Shares Price Value
holding Stock Option (Right to Buy) F1 -- -- --
holding Stock Option (Right to Buy) F2 -- -- --
holding Stock Option (Right to Buy) F2 -- -- --
holding Stock Option (Right to Buy) F2 -- -- --
holding Stock Option (Right to Buy) F2 -- -- --
holding Stock Option (Right to Buy) F3 -- -- --
Holdings After Transaction: Stock Option (Right to Buy) — 3,005,979 contracts (Direct)
Footnotes (3)
  1. F1. 25% of the shares underlying this option vested and became exercisable on January 17, 2024, with the remainder vesting in twelve (12) equal quarterly installments thereafter, subject to the Reporting Person's continued service on each such vesting date.
  2. F2. The shares underlying this option are fully vested and exercisable.
  3. F3. The shares underlying this option shall vest in sixteen (16) equal monthly installments following June 25, 2024, subject to the Reporting Person's continued service on each such vesting date.
Largest option underlying shares 1770369.0000 shares Option over Common Stock with 25% vested on January 17, 2024 and remainder in 12 quarterly installments
Fully vested option block 1 48685.0000 shares Underlying Common Stock; footnote states shares are fully vested and exercisable
Fully vested option block 2 97370.0000 shares Underlying Common Stock; fully vested and exercisable per footnote
New monthly vesting option 943500.0000 shares Underlying Common Stock; vests in 16 equal monthly installments following June 25, 2024
Option exercise price $0.7800 per share Exercise price for all reported Stock Option (Right to Buy) positions
First option expiration February 27, 2033 Expiration date for several stock option positions
Second option expiration June 24, 2034 Expiration date for the 943500.0000-share option position
Stock Option (Right to Buy) financial
"The security title is listed as Stock Option (Right to Buy) over Common Stock"
exercise price financial
"The options have an exercise price of 0.7800 per share of Common Stock"
The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.
vested and exercisable financial
"The shares underlying this option are fully vested and exercisable"
quarterly installments financial
"The remainder vesting in twelve equal quarterly installments thereafter"
monthly installments financial
"This option shall vest in sixteen equal monthly installments following June 25, 2024"
Monthly installments are regular, fixed payments made each month to gradually pay off a larger amount, such as a loan or purchase. Think of it like paying for a big item in small, manageable parts instead of all at once. For investors, understanding installment payments helps gauge how debts are structured and how they might affect financial stability or cash flow over time.

FAQ

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

What does Obsidian Therapeutics (OBX) disclose in this Form 3?

The Form 3 discloses initial stock option holdings of Chief Medical Officer Hari Parameswaran, detailing multiple option grants, exercise price of $0.7800, expiration dates in 2033 and 2034, and specific vesting schedules.

How many Obsidian Therapeutics (OBX) shares underlie Hari Parameswaran’s largest option?

The largest reported option covers 1,770,369 underlying shares of Common Stock. 25% vested and became exercisable on January 17, 2024, with the remaining shares vesting in twelve equal quarterly installments, subject to continued service.

What is the exercise price of the stock options reported for OBX’s CMO?

All reported stock options have an exercise price of $0.7800 per share. These options relate to Obsidian Therapeutics Common Stock and carry varying vesting schedules and expirations in 2033 and 2034, as specified in the filing.

Are any of Hari Parameswaran’s Obsidian (OBX) options already fully vested?

Yes. The filing states that the shares underlying certain options, including blocks of 48,685 and 97,370 underlying shares, are fully vested and exercisable, providing immediate exercise rights at $0.7800 per share.

What is the vesting schedule for the new 943,500-share option at Obsidian (OBX)?

The option over 943,500 underlying shares vests in sixteen equal monthly installments following June 25, 2024. Each installment is subject to Hari Parameswaran’s continued service on the applicable vesting date, according to the disclosure.

Does this OBX Form 3 show any stock purchases or sales by the CMO?

No. The Form 3 reports holdings of stock options only and shows no buy or sell transactions. It establishes Hari Parameswaran’s derivative ownership position in Obsidian Therapeutics at the time of becoming a reporting person.

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

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SEC Form 3
FORM 3UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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:3235-0104
Estimated average burden
hours per response:0.5
1. Name and Address of Reporting Person*
Hari Parameswaran

(Last)(First)(Middle)
OBSIDIAN THERAPEUTICS, INC.
1030 MASSACHUSETTS AVE

(Street)
CAMBRIDGE MASSACHUSETTS 02138

(City)(State)(Zip)

UNITED STATES

(Country)
2. Date of Event Requiring Statement (Month/Day/Year)
08/03/2026
3. Issuer Name and Ticker or Trading Symbol
Obsidian Therapeutics, Inc. [ OBX ]
3a. Foreign Trading Symbol
5. If Amendment, Date of Original Filed (Month/Day/Year)
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
Chief Medical Officer
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year)3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option (Right to Buy) (1)02/27/2033Common Stock1,770,369$0.78D
Stock Option (Right to Buy) (2)02/27/2033Common Stock48,685$0.78D
Stock Option (Right to Buy) (2)02/27/2033Common Stock97,370$0.78D
Stock Option (Right to Buy) (2)02/27/2033Common Stock97,370$0.78D
Stock Option (Right to Buy) (2)02/27/2033Common Stock48,685$0.78D
Stock Option (Right to Buy) (3)06/24/2034Common Stock943,500$0.78D
Explanation of Responses:
1. 25% of the shares underlying this option vested and became exercisable on January 17, 2024, with the remainder vesting in twelve (12) equal quarterly installments thereafter, subject to the Reporting Person's continued service on each such vesting date.
2. The shares underlying this option are fully vested and exercisable.
3. The shares underlying this option shall vest in sixteen (16) equal monthly installments following June 25, 2024, subject to the Reporting Person's continued service on each such vesting date.
Remarks:
Exhibit 24 - Power of Attorney
/s/ Gabriela Morales-Rivera, Attorney-in-Fact08/03/2026
** 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 5 (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 3: SEC 1473 (03-26)

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