Key facts
- This page summarizes Ion Yadigaroglu's Form 4 filing for Fervo Energy Co (FRVO).
- 9 reported transactions and 8 derivative rows are listed below.
- Accepted by SEC: 18 May 2026, 16:30.
Ion Yadigaroglu - 04 Dec 2025 Form 4 Insider Report for Fervo Energy Co (FRVO)
- Reporting relationship
- Director, 10%+ Owner
- Issuer ticker
- FRVO
- Reported as of
- 04 Dec 2025
- Net transaction value
- $0
- SEC form
- 4
- Accepted by SEC
- 18 May 2026, 16:30:50 UTC
- Next SEC filing
- 12 May 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Gustavo Torres, Attorney-in-Fact
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
Ion Yadigaroglu filed Form 4 for Fervo Energy Co (FRVO) on 18 May 2026.
Change
- No earlier filing in this sequence is available for direct comparison.
- Current net transaction value: $0.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001607971
Primary reporting owner
Yadigaroglu Ion
- Relationship
- Director, 10%+ Owner
- Address
- C/O FERVO ENERGY COMPANY, 811 MAIN STREET, SUITE 1700, HOUSTON
- Signature
- /s/ Gustavo Torres, Attorney-in-Fact
- Signature date
- 18 May 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
FRVO
transaction
Class A Common Stock
Conversion of derivative security
- Transaction value
- Shares
- +34,227,390
- Change %
- Price
- Shares after
- 34,227,390
- Date
- 14 May 2026
- Ownership
- See Footnote
- Footnotes
- F1, F2, F3
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
FRVO
transaction
Derivative
Series E-1 Preferred Stock
Award
- Transaction value
- Shares
- +2,634,495
- Change %
- Price
- $11.36*
- Shares after
- 2,634,495
- Date
- 04 Dec 2025
- Ownership
- See Footnote
- Underlying class
- Class A Common Stock
- Underlying amount
- 2,634,495
- Exercise price
- Footnotes
- F1, F2, F3, F4
FRVO
transaction
Derivative
Restricted Stock Units
Award
- Transaction value
- Shares
- +9,259
- Change %
- Price
- $0.000000*
- Shares after
- 9,259
- Date
- 14 May 2026
- Ownership
- Direct
- Underlying class
- Class A Common Stock
- Underlying amount
- 9,259
- Exercise price
- Footnotes
- F5, F6
FRVO
transaction
Derivative
Series B Preferred Stock
Conversion of derivative security
- Transaction value
- Shares
- -6,368,028
- Change %
- -100%
- Price
- Shares after
- 0
- Date
- 14 May 2026
- Ownership
- See Footnote
- Underlying class
- Class A Common Stock
- Underlying amount
- 6,368,028
- Exercise price
- Footnotes
- F1, F2, F3
FRVO
transaction
Derivative
Series C-1 Preferred Stock
Conversion of derivative security
- Transaction value
- Shares
- -8,523,393
- Change %
- -100%
- Price
- Shares after
- 0
- Date
- 14 May 2026
- Ownership
- See Footnote
- Underlying class
- Class A Common Stock
- Underlying amount
- 8,523,393
- Exercise price
- Footnotes
- F1, F2, F3
FRVO
transaction
Derivative
Series C-3 Preferred Stock
Conversion of derivative security
- Transaction value
- Shares
- -4,266,992
- Change %
- -100%
- Price
- Shares after
- 0
- Date
- 14 May 2026
- Ownership
- See Footnote
- Underlying class
- Class A Common Stock
- Underlying amount
- 4,266,992
- Exercise price
- Footnotes
- F1, F2, F3
FRVO
transaction
Derivative
Series D-1 Preferred Stock
Conversion of derivative security
- Transaction value
- Shares
- -4,261,341
- Change %
- -100%
- Price
- Shares after
- 0
- Date
- 14 May 2026
- Ownership
- See Footnote
- Underlying class
- Class A Common Stock
- Underlying amount
- 4,261,341
- Exercise price
- Footnotes
- F1, F2, F3
FRVO
transaction
Derivative
Series D-3 Preferred Stock
Conversion of derivative security
- Transaction value
- Shares
- -8,173,141
- Change %
- -100%
- Price
- Shares after
- 0
- Date
- 14 May 2026
- Ownership
- See Footnote
- Underlying class
- Class A Common Stock
- Underlying amount
- 8,173,141
- Exercise price
- Footnotes
- F1, F2, F3
FRVO
transaction
Derivative
Series E-1 Preferred Stock
Conversion of derivative security
- Transaction value
- Shares
- -2,634,495
- Change %
- -100%
- Price
- Shares after
- 0
- Date
- 14 May 2026
- Ownership
- See Footnote
- Underlying class
- Class A Common Stock
- Underlying amount
- 2,634,495
- Exercise price
- Footnotes
- F1, F2, F3
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 6 footnotes
Footnote F1
Each share of the Series B, Series C-1, Series C-3, Series D-1, Series D-3 and Series E-1 Preferred Stock converted into Class A Common Stock immediately prior to the completion of the Issuer's initial public offering pursuant to its terms and has no expiration date.
Footnote F2
Following the transactions reported herein, consists of (i) 12,055,467 shares of Class A Common Stock held by Technology Impact Fund, LP, (ii) 14,962,430 shares of Class A Common Stock held by Technology Impact Growth Fund, II, L.P., (iii) 5,448,761 shares of Class A Common Stock held by TIGF II Direct Strategies LLC - Series 5 and (iv) 1,760,732 shares of Class A Common Stock held by TIGF II Direct Strategies LLC - Series 7.
Footnote F3
TIF Partners, LLC is the general partner of Technology Impact Fund, LP and TIGF Partners II, LLC is the general partner of Technology Impact Growth Fund, II, L.P. and the manager of (i) TIGF II Direct Strategies LLC - Series 5 and (ii) TIGF II Direct Strategies LLC - Series 7. Ion Yadigaroglu, as a manager of TIF Partners, LLC and TIGF Partners II, LLC, shares the power to vote and dispose of the shares held by Technology Impact Fund, LP, Technology Impact Growth Fund, II, L.P., TIGF II Direct Strategies LLC - Series 5 and TIGF II Direct Strategies LLC - Series 7. Ion Yadigaroglu disclaims beneficial ownership of such holdings, except to the extent of his pecuniary interest in the shares.
Footnote F4
This transaction occurred prior to the Issuer's registration of a class of equity securities under Section 12 of the Securities Exchange Act of 1934, as amended, in connection with the Issuer's initial public offering, and is reported herein pursuant to Rule 16a-2(a).
Footnote F5
Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Class A Common Stock.
Footnote F6
The RSUs will vest in full on the earlier of the Issuer's 2027 Annual Meeting or May 14, 2027.