person · Reporting owner
Goldman Tepper Leslie
Disclosed activity across 3 companies
Sign in to followReported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| DEEP FISSION, INC.FISN · Entity 5748 | Director | July 23, 2026 | July 27, 2026 |
| Deep Isolation Nuclear, Inc.DBHL · Entity 9903 | Director | October 06, 2026 | October 09, 2026 |
| Titan Acquisition Corp.TACH · Entity 5746 | Director | April 08, 2025 | April 09, 2025 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
DEEP FISSION, INC.
Report date July 23, 2026 · Filed July 27, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Restricted Stock UnitSEC Table II · derivative / convertible security · Conversion / exercise price $0.00 | Direct | 19,204 |
Reported balance
After 2026-07-23 transaction · row 1
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 1 · 2026-07-23 · Grant · Acquired 19,204 · Balance 19,204 F1: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock upon vesting. The units vest on July 20, 2027, provided the holder continues to provide service through the vesting date. |
Filing footnotes · ownership attribution and instrument terms
F1: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock upon vesting. The units vest on July 20, 2027, provided the holder continues to provide service through the vesting date.
Deep Isolation Nuclear, Inc.
Report date October 06, 2026 · Filed October 09, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 201,464 |
Reported balance
After 2026-10-06 transaction · row 1
Account or security details depend on footnotes; rows are not merged.
1 source rowRow 1 · 2026-10-06 · Grant · Acquired 23,214 · Balance 201,464 F1: Represents a grant of restricted stock units ("RSUs") to the Reporting Person pursuant to the Deep Isolation Nuclear, Inc. 2025 Equity Incentive Plan. Each RSU represents a contingent right to receive one share of common stock upon vesting. The RSUs shall vest on September 29, 2027, subject to the Reporting Person's continued service through each vesting date. Conversion of the RSUs into shares of common stock of the Issuer upon vesting is deferred until the earliest of the following events to occur: (i) a change of control of the Issuer, (ii) a separation of service as a director by the Reporting Person, or (iii) death of the Reporting Person. |
| Common StockSEC Table I · non-derivative | IndirectBy Bella AJT Holdings, LLC | 25,000 |
Reported balance
Holding disclosure · report date 2026-10-06 · row 2
Holding and transaction disclosures are not merged.
1 source rowRow 2 · Balance 25,000 F2: The Reporting Person is a member of Bella AJT Holdings, LLC and shares voting and investment power over and a pecuniary interest in the securities held by such entity. |
Filing footnotes · ownership attribution and instrument terms
F1: Represents a grant of restricted stock units ("RSUs") to the Reporting Person pursuant to the Deep Isolation Nuclear, Inc. 2025 Equity Incentive Plan. Each RSU represents a contingent right to receive one share of common stock upon vesting. The RSUs shall vest on September 29, 2027, subject to the Reporting Person's continued service through each vesting date. Conversion of the RSUs into shares of common stock of the Issuer upon vesting is deferred until the earliest of the following events to occur: (i) a change of control of the Issuer, (ii) a separation of service as a director by the Reporting Person, or (iii) death of the Reporting Person.
F2: The Reporting Person is a member of Bella AJT Holdings, LLC and shares voting and investment power over and a pecuniary interest in the securities held by such entity.
Titan Acquisition Corp.
Report date April 08, 2025 · Filed April 09, 2025
This filing explicitly reported no securities owned.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| October 06, 2026 Filed Oct 9, 2026 00:28 UTC | Deep Isolation Nuclear, Inc. DBHL · Entity 9903 | GrantCommon Stock | 23,214 | $0.00 | $0.00 |
DisclosureSEC source: 0001213900-26-108162 · ownership.xml · nonDerivative · entry 1 Goldman Tepper Leslie · CIK 0002062355 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 201,464 F1 · security: Represents a grant of restricted stock units ("RSUs") to the Reporting Person pursuant to the Deep Isolation Nuclear, Inc. 2025 Equity Incentive Plan. Each RSU represents a contingent right to receive one share of common stock upon vesting. The RSUs shall vest on September 29, 2027, subject to the Reporting Person's continued service through each vesting date. Conversion of the RSUs into shares of common stock of the Issuer upon vesting is deferred until the earliest of the following events to occur: (i) a change of control of the Issuer, (ii) a separation of service as a director by the Reporting Person, or (iii) death of the Reporting Person. Read SEC document |
| July 23, 2026 Filed Jul 27, 2026 21:01 UTC | DEEP FISSION, INC. FISN · Entity 5748 | GrantRestricted Stock Unit · Derivative | 19,204 | $0.00 Strike: $0.00 | $0.00 |
DisclosureSEC source: 0001104659-26-087134 · tm2621403-2_4seq1.xml · derivative · entry 1 Goldman Tepper Leslie · CIK 0002062355 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 19,204 Underlying: Common Stock · 19,204 shares Expires not disclosed F1 · derivative.exercise_date: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock upon vesting. The units vest on July 20, 2027, provided the holder continues to provide service through the vesting date. F1 · derivative.expiration_date: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock upon vesting. The units vest on July 20, 2027, provided the holder continues to provide service through the vesting date. Read SEC document |
| March 09, 2026 Filed Mar 10, 2026 21:29 UTC | DEEP FISSION, INC. NONE · Entity 5748 | GrantRestricted Stock Unit · Derivative | 3,334 | $0.00 Strike: $0.00 | $0.00 |
DisclosureSEC source: 0001104659-26-025956 · tm268353-8_4seq1.xml · derivative · entry 1 Goldman Tepper Leslie · CIK 0002062355 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 103,334 Underlying: Common Stock · 3,334 shares Expires 2033-03-09 F1 · derivative.exercise_date: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock upon vesting. The units vest on the one-year anniversary of the grant date, provided the holder continues to provide service through the vesting date. After the units vest, the holder may elect to defer receipt of the shares until the earlier of a qualifying distribution event or the termination of service, as permitted under the Issuer's equity incentive plan. Read SEC document |
| November 19, 2025 Filed Nov 21, 2025 18:39 UTC | Deep Isolation Nuclear, Inc. NONE · Entity 9903 | GrantCommon Stock | 43,333 | $0.00 | $0.00 |
DisclosureSEC source: 0001213900-25-113509 · ownership.xml · nonDerivative · entry 1 Goldman Tepper Leslie · CIK 0002062355 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 108,250 F1 · kind: Represents the grant of restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's common stock upon settlement. The RSUs shall fully vest in 1 year and are subject to a deferral based on the earlier to occur of a change of control, a separation of service as a director, and death. Read SEC document |
| November 12, 2025 Filed Nov 15, 2025 01:22 UTC | DEEP FISSION, INC. NONE · Entity 5748 | GrantRestricted Stock Units · Derivative | 100,000 | $0.00 Strike: $0.00 | $0.00 |
DisclosureSEC source: 0001104659-25-112833 · tm2531230-3_4seq1.xml · derivative · entry 1 Goldman Tepper Leslie · CIK 0002062355 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 100,000 Underlying: Common Stock · 100,000 shares Expires not disclosed F1 · security: Each restricted stock unit gives the holder the right to receive one share of the Issuer's common stock upon vesting. The units vest after six months, as long as the holder continues to provide service through the vesting date. After the units vest, the holder may choose to delay receiving the shares until the earlier of a qualifying distribution event or the end of service, as allowed under the Issuer's equity incentive plan. F1 · derivative.exercise_date: Each restricted stock unit gives the holder the right to receive one share of the Issuer's common stock upon vesting. The units vest after six months, as long as the holder continues to provide service through the vesting date. After the units vest, the holder may choose to delay receiving the shares until the earlier of a qualifying distribution event or the end of service, as allowed under the Issuer's equity incentive plan. F2 · derivative.expiration_date: These restricted stock units do not have an expiration date. Read SEC document |
| October 01, 2025 Filed Oct 3, 2025 20:00 UTC | Deep Isolation Nuclear, Inc. NONE · Entity 9903 | GrantStock Option (Right to Buy) · Derivative | 10,833 | $0.00 Strike: $3.00 | $0.00 |
DisclosureSEC source: 0001213900-25-096056 · ownership.xml · derivative · entry 3 Goldman Tepper Leslie · CIK 0002062355 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 10,833 Underlying: Common Shares · 10,833 shares Expires 2035-10-01 F3 · derivative.exercise_date: The Stock Option is subject to a 4-year vesting schedule, whereby 1/48th of the option shares will vest monthly beginning on October 1, 2025, subject to Reporting Person's continued service through each vesting date. Read SEC document |
| October 01, 2025 Filed Oct 3, 2025 20:00 UTC | Deep Isolation Nuclear, Inc. NONE · Entity 9903 | GrantCommon Stock | 32,500 | $0.00 | $0.00 |
DisclosureSEC source: 0001213900-25-096056 · ownership.xml · nonDerivative · entry 1 Goldman Tepper Leslie · CIK 0002062355 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 97,687 F1 · kind: Represents the grant of restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's common stock upon settlement. The RSUs are subject to a 4-year vesting period, whereby 1/48th of the RSUs will vest monthly beginning October 1, 2025, subject to the Reporting Person's continuous service through each vesting date. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.