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Electra Therapeutics CSO reports stock options

CSO Parry Graham reports option and preferred share holdings in Electra Therapeutics, including IPO-convertible Series A preferred stock.

(Moderate)
(Neutral)
Form Type
3

Rhea-AI Filing Summary

Electra Therapeutics, Inc. (ETRA) reports that Chief Scientific Officer Parry Graham beneficially owns several employee stock options and Series A Convertible Preferred Stock. The options cover blocks of common stock at exercise prices of $4.40, $4.96, and $15.00 with expirations from 2033 to 2036, plus Series A Convertible Preferred Stock that will automatically convert into common stock upon the company’s initial public offering.

Positive

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Negative

  • None.
Insider Parry Graham
Role Chief Scientific Officer
Type Security Shares Price Value
holding Employee Stock Option (right to buy) F1 -- -- --
holding Employee Stock Option (right to buy) F2 -- -- --
holding Employee Stock Option (right to buy) F3 -- -- --
holding Employee Stock Option (right to buy) F4 -- -- --
holding Employee Stock Option (right to buy) F5 -- -- --
holding Series A Convertible Preferred Stock F6, F7 -- -- --
Holdings After Transaction: Employee Stock Option (right to buy) — 527,003 contracts (Direct); Series A Convertible Preferred Stock — 85,504 contracts (Direct)
Footnotes (7)
  1. F1. 1/4th of the total shares subject to this option vested one year after January 1, 2024, and thereafter 1/48th of the total shares subject to this option shall vest on each monthly anniversary thereof. The shares subject to this option are early exercisable, subject to the Issuer's right of repurchase.
  2. F2. 1/48th of the total shares subject to this option shall vest monthly after January 1, 2026. The shares subject to this option are early exercisable, subject to the Issuer's right of repurchase.
  3. F3. 1/48th of the total shares subject to this option shall vest monthly commencing from September 17, 2026.
  4. F4. The shares subject to this option are fully vested upon the date of grant.
  5. F5. 1/4th of the total shares subject to this option shall vest monthly commencing on September 2, 2026.
  6. F6. Each share of Series A Convertible Preferred Stock (the "Preferred Stock") will automatically convert into 1 share of Common Stock upon the closing of the Issuer's initial public offering without payment of further consideration. Share numbers give effect to such conversion. The Preferred Stock has no expiration date.
  7. F7. 7,125 of the shares ("Restricted Shares") shall be subject to vesting as follows: 1/4th of the Restricted Shares shall vest monthly commencing from September 2, 2026.
Option exercise price $4.40 per share Employee stock option over 101,147 underlying common shares expiring November 16, 2033
Underlying shares at $4.40 101,147 shares Employee stock option early exercisable, subject to repurchase right
Option exercise price $4.96 per share Employee stock option over 219,562 underlying common shares expiring February 12, 2036
Underlying shares at $4.96 219,562 shares Employee stock option, monthly vesting after January 1, 2026
Option exercise price $15.00 per share Employee stock options over several blocks including 155,979, 46,122 and 4,193 shares expiring September 16, 2036
Series A preferred underlying common 85,504 shares Series A Convertible Preferred Stock automatically converts 1:1 into common upon IPO closing
Restricted Shares 7,125 shares Common shares designated as Restricted Shares with vesting commencing September 2, 2026
Employee Stock Option (right to buy) financial
"security titled "Employee Stock Option (right to buy)" with underlying common"
Series A Convertible Preferred Stock financial
"security titled "Series A Convertible Preferred Stock" convertible into common"
Series A convertible preferred stock is a class of shares sold in an early funding round that gives investors a mix of protection and upside: it pays a priority claim over common shares if the company is sold or closes, but can be converted into ordinary shares to share in future growth. Think of it like a hybrid between a safer stake and a ticket to ownership; it matters to investors because it affects who controls the company, how future gains are split, and how much their investment is protected from downside.
early exercisable financial
"The shares subject to this option are early exercisable, subject to the Issuer's right"
Issuer's right of repurchase financial
"early exercisable, subject to the Issuer's right of repurchase"
Restricted Shares financial
"7,125 of the shares ("Restricted Shares") shall be subject to vesting"
Restricted shares are company stock that cannot be sold or transferred immediately because they are subject to legal or contractual limits, such as a required holding period or performance conditions. They matter to investors because these locked-up shares can affect a company’s available stock for trading, future dilution, and insider incentives—imagine a gift that can’t be cashed until certain conditions are met, which changes when and how much supply can suddenly enter the market.

FAQ

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

What insider holdings did ETRA’s Chief Scientific Officer report on this Form 3?

Parry Graham reported employee stock options over multiple blocks of Electra Therapeutics common stock and Series A Convertible Preferred Stock that is convertible into 85,504 shares of common stock, reflecting his initial beneficial ownership position as an officer.

What are the key stock option terms reported by ETRA’s CSO?

Reported options include grants exercisable at $4.40 for 101,147 underlying shares expiring November 16, 2033, $4.96 for 219,562 shares expiring February 12, 2036, and $15.00 options over several blocks expiring September 16, 2036, all held directly.

How does ETRA’s Series A Convertible Preferred Stock held by the CSO convert?

Each share of Series A Convertible Preferred Stock automatically converts into 1 share of common stock upon the closing of Electra Therapeutics’ initial public offering, without further consideration. The reported holdings correspond to 85,504 underlying common shares and have no expiration date.

What are the vesting terms for the $4.40 stock option reported for ETRA?

For the $4.40 option over 101,147 shares, 1/4 of the total shares vested one year after January 1, 2024, and 1/48 vests on each monthly anniversary thereafter. The option is early exercisable, subject to Electra Therapeutics’ right of repurchase.

What vesting schedule applies to the $4.96 stock option reported by ETRA’s CSO?

For the $4.96 option over 219,562 shares, 1/48 of the total shares vests monthly after January 1, 2026. These shares are early exercisable, subject to Electra Therapeutics’ right of repurchase, according to the filed footnote.

Are any of the $15.00 stock options for ETRA fully vested?

Yes. One block of the $15.00 employee stock option, covering 46,122 underlying common shares and expiring September 16, 2036, is stated to be fully vested upon the date of grant.

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

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Learn about SEC filing dates
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*
Parry Graham

(Last)(First)(Middle)
C/O ELECTRA THERAPEUTICS, INC.
230 E GRAND AVENUE, SUITE S-100

(Street)
SOUTH SAN FRANCISCO CALIFORNIA 94080

(City)(State)(Zip)

UNITED STATES

(Country)
2. Date of Event Requiring Statement (Month/Day/Year)
09/18/2026
3. Issuer Name and Ticker or Trading Symbol
Electra Therapeutics, Inc. [ ETRA ]
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 Scientific 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
Employee Stock Option (right to buy) (1)11/16/2033Common Stock101,147$4.4D
Employee Stock Option (right to buy) (2)02/12/2036Common Stock219,562$4.96D
Employee Stock Option (right to buy) (3)09/16/2036Common Stock155,979$15D
Employee Stock Option (right to buy) (4)09/16/2036Common Stock46,122$15D
Employee Stock Option (right to buy) (5)09/16/2036Common Stock4,193$15D
Series A Convertible Preferred Stock (6) (6)Common Stock85,504(7)(6)D
Explanation of Responses:
1. 1/4th of the total shares subject to this option vested one year after January 1, 2024, and thereafter 1/48th of the total shares subject to this option shall vest on each monthly anniversary thereof. The shares subject to this option are early exercisable, subject to the Issuer's right of repurchase.
2. 1/48th of the total shares subject to this option shall vest monthly after January 1, 2026. The shares subject to this option are early exercisable, subject to the Issuer's right of repurchase.
3. 1/48th of the total shares subject to this option shall vest monthly commencing from September 17, 2026.
4. The shares subject to this option are fully vested upon the date of grant.
5. 1/4th of the total shares subject to this option shall vest monthly commencing on September 2, 2026.
6. Each share of Series A Convertible Preferred Stock (the "Preferred Stock") will automatically convert into 1 share of Common Stock upon the closing of the Issuer's initial public offering without payment of further consideration. Share numbers give effect to such conversion. The Preferred Stock has no expiration date.
7. 7,125 of the shares ("Restricted Shares") shall be subject to vesting as follows: 1/4th of the Restricted Shares shall vest monthly commencing from September 2, 2026.
/s/ Jamie Kitano, Attorney-in-Fact09/18/2026
** 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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