person · Reporting owner
Taylor Joseph Michael
Disclosed activity across 2 companies
Sign in to followReported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| Ceribell, Inc.CBLL · Entity 4994 | Director | August 13, 2026 | August 14, 2026 |
| Factorial Energy Inc.FAC · Entity 5449 | Director | June 05, 2026 | June 12, 2026 |
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.
Ceribell, Inc.
Report date August 13, 2026 · Filed August 14, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 48,478 |
Reported balance
After 2026-08-13 transaction · row 1
1 source rowRow 1 · 2026-08-13 · Sale · Disposed 13,095 · Balance 48,478 |
Factorial Energy Inc.
Report date June 05, 2026 · Filed June 12, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Series A Common StockSEC Table I · non-derivative | Direct | 23,041 |
Reported balance
Holding disclosure · report date 2026-06-05 · row 1
Holding and transaction disclosures are not merged.
1 source rowRow 1 · Balance 23,041 |
| Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $0.08 · Expires 2030-02-14 | Direct | Not disclosed |
Reported balance
Holding disclosure · report date 2026-06-05 · row 2
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 2 · Balance Not disclosed F1: The shares underlying this option are fully vested and exercisable. |
| Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $0.88 · Expires 2035-01-23 | Direct | Not disclosed |
Reported balance
Holding disclosure · report date 2026-06-05 · row 3
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 3 · Balance Not disclosed F1: The shares underlying this option are fully vested and exercisable. |
| Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $0.88 · Expires 2031-06-20 | Direct | Not disclosed |
Reported balance
Holding disclosure · report date 2026-06-05 · row 4
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 4 · Balance Not disclosed F1: The shares underlying this option are fully vested and exercisable. |
| Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $0.88 · Expires 2031-09-20 | Direct | Not disclosed |
Reported balance
Holding disclosure · report date 2026-06-05 · row 5
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 5 · Balance Not disclosed F1: The shares underlying this option are fully vested and exercisable. |
| Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $0.88 · Expires 2032-04-09 | Direct | Not disclosed |
Reported balance
Holding disclosure · report date 2026-06-05 · row 6
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 6 · Balance Not disclosed F1: The shares underlying this option are fully vested and exercisable. |
| Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $0.88 · Expires 2032-08-24 | Direct | Not disclosed |
Reported balance
Holding disclosure · report date 2026-06-05 · row 7
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 7 · Balance Not disclosed F2: 25% of the shares underlying this option vested on August 25, 2023, with the remainder vesting in thirty-six equal monthly installments thereafter, subject to the Reporting Person's continued service on each such vesting date. |
| Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $0.88 · Expires 2035-03-12 | Direct | Not disclosed |
Reported balance
Holding disclosure · report date 2026-06-05 · row 8
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 8 · Balance Not disclosed F1: The shares underlying this option are fully vested and exercisable. |
| Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $2.64 · Expires 2035-10-07 | Direct | Not disclosed |
Reported balance
Holding disclosure · report date 2026-06-05 · row 9
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 9 · Balance Not disclosed F3: 25% of the shares underlying this option shall vest on September 4, 2026, with the remainder vesting in thirty-six equal monthly installments thereafter, subject to the Reporting Person's continued service on each such vesting date. |
Filing footnotes · ownership attribution and instrument terms
F1: The shares underlying this option are fully vested and exercisable.
F2: 25% of the shares underlying this option vested on August 25, 2023, with the remainder vesting in thirty-six equal monthly installments thereafter, subject to the Reporting Person's continued service on each such vesting date.
F3: 25% of the shares underlying this option shall vest on September 4, 2026, with the remainder vesting in thirty-six equal monthly installments thereafter, subject to the Reporting Person's continued service on each such vesting date.
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 |
|---|---|---|---|---|---|---|
| August 13, 2026 Filed Aug 14, 2026 18:37 UTC | Ceribell, Inc. CBLL · Entity 4994 | SaleCommon Stock | 13,095 | $23.40 | $306,423.00 |
DisclosureSEC source: 0001193125-26-351878 · ownership.xml · nonDerivative · entry 1 Taylor Joseph Michael · CIK 0002036111 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 48,478 Read SEC document |
| June 11, 2026 Filed Jun 15, 2026 17:48 UTC | Ceribell, Inc. CBLL · Entity 4994 | SaleCommon Stock | 5,500 | $18.41 | $101,255.00 |
DisclosureSEC source: 0001193125-26-270796 · ownership.xml · nonDerivative · entry 1 Taylor Joseph Michael · CIK 0002036111 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 61,573 Read SEC document |
| June 02, 2026 Filed Jun 4, 2026 21:06 UTC | Ceribell, Inc. CBLL · Entity 4994 | GrantCommon Stock | 7,838 | $0.00 | $0.00 |
DisclosureSEC source: 0001193125-26-257719 · ownership.xml · nonDerivative · entry 1 Taylor Joseph Michael · CIK 0002036111 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 67,073 F1 · shares: Represents restricted stock units ("RSUs"). Read SEC document |
| August 19, 2025 Filed Aug 21, 2025 18:47 UTC | Ceribell, Inc. CBLL · Entity 4994 | SaleCommon Stock | 7,032 | $11.76 | $82,696.32 |
DisclosureSEC source: 0002036111-25-000003 · ownership.xml · nonDerivative · entry 1 Taylor Joseph Michael · CIK 0002036111 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 59,235 F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $11.75 to $11.81, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased or sold, as applicable, at each separate price within the ranges set forth in this footnote. Read SEC document |
| June 10, 2025 Filed Jun 17, 2025 23:46 UTC | Ceribell, Inc. CBLL · Entity 4994 | GrantCommon Stock | 8,828 | $0.00 | $0.00 |
DisclosureSEC source: 0000950170-25-087597 · ownership.xml · nonDerivative · entry 1 Taylor Joseph Michael · CIK 0002036111 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 66,267 F1 · shares: Represents 8,828 restricted stock units. Read SEC document |
| October 15, 2024 Filed Oct 16, 2024 20:17 UTC | Ceribell, Inc. CBLL · Entity 4994 | ConversionSeries C-1 Preferred Stock · Derivative | 8,704 | $0.00 | $0.00 |
DisclosureSEC source: 0000950170-24-115004 · ownership.xml · derivative · entry 7 Taylor Joseph Michael · CIK 0002036111 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 8,704 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: Each share of the issuer's Preferred Stock automatically converted into one (1) share of the issuer's Common Stock immediately prior to the closing of the issuer's initial public offering on October 15, 2024 and had no expiration date. F3 · derivative.exercise_date: Each share of the issuer's Preferred Stock automatically converted into one (1) share of the issuer's Common Stock immediately prior to the closing of the issuer's initial public offering on October 15, 2024 and had no expiration date. F3 · derivative.expiration_date: Each share of the issuer's Preferred Stock automatically converted into one (1) share of the issuer's Common Stock immediately prior to the closing of the issuer's initial public offering on October 15, 2024 and had no expiration date. Read SEC document |
| October 15, 2024 Filed Oct 16, 2024 20:17 UTC | Ceribell, Inc. CBLL · Entity 4994 | ConversionSeries B Preferred Stock · Derivative | 13,064 | $0.00 | $0.00 |
DisclosureSEC source: 0000950170-24-115004 · ownership.xml · derivative · entry 6 Taylor Joseph Michael · CIK 0002036111 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 13,064 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: Each share of the issuer's Preferred Stock automatically converted into one (1) share of the issuer's Common Stock immediately prior to the closing of the issuer's initial public offering on October 15, 2024 and had no expiration date. F3 · derivative.exercise_date: Each share of the issuer's Preferred Stock automatically converted into one (1) share of the issuer's Common Stock immediately prior to the closing of the issuer's initial public offering on October 15, 2024 and had no expiration date. F3 · derivative.expiration_date: Each share of the issuer's Preferred Stock automatically converted into one (1) share of the issuer's Common Stock immediately prior to the closing of the issuer's initial public offering on October 15, 2024 and had no expiration date. Read SEC document |
| October 15, 2024 Filed Oct 16, 2024 20:17 UTC | Ceribell, Inc. CBLL · Entity 4994 | ConversionSeries A Preferred Stock · Derivative | 22,439 | $0.00 | $0.00 |
DisclosureSEC source: 0000950170-24-115004 · ownership.xml · derivative · entry 5 Taylor Joseph Michael · CIK 0002036111 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 22,439 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: Each share of the issuer's Preferred Stock automatically converted into one (1) share of the issuer's Common Stock immediately prior to the closing of the issuer's initial public offering on October 15, 2024 and had no expiration date. F3 · derivative.exercise_date: Each share of the issuer's Preferred Stock automatically converted into one (1) share of the issuer's Common Stock immediately prior to the closing of the issuer's initial public offering on October 15, 2024 and had no expiration date. F3 · derivative.expiration_date: Each share of the issuer's Preferred Stock automatically converted into one (1) share of the issuer's Common Stock immediately prior to the closing of the issuer's initial public offering on October 15, 2024 and had no expiration date. Read SEC document |
| October 15, 2024 Filed Oct 16, 2024 20:17 UTC | Ceribell, Inc. CBLL · Entity 4994 | ConversionCommon Stock | 8,704 | Not disclosed | Not disclosed |
DisclosureSEC source: 0000950170-24-115004 · ownership.xml · nonDerivative · entry 4 Taylor Joseph Michael · CIK 0002036111 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 57,439 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · price: Each share of the issuer's Preferred Stock automatically converted into one (1) share of the issuer's Common Stock immediately prior to the closing of the issuer's initial public offering on October 15, 2024 and had no expiration date. F2 · balance_after: Represents 13,232 RSUs. Read SEC document |
| October 15, 2024 Filed Oct 16, 2024 20:17 UTC | Ceribell, Inc. CBLL · Entity 4994 | ConversionCommon Stock | 13,064 | Not disclosed | Not disclosed |
DisclosureSEC source: 0000950170-24-115004 · ownership.xml · nonDerivative · entry 3 Taylor Joseph Michael · CIK 0002036111 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 48,735 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · price: Each share of the issuer's Preferred Stock automatically converted into one (1) share of the issuer's Common Stock immediately prior to the closing of the issuer's initial public offering on October 15, 2024 and had no expiration date. F2 · balance_after: Represents 13,232 RSUs. Read SEC document |
| October 15, 2024 Filed Oct 16, 2024 20:17 UTC | Ceribell, Inc. CBLL · Entity 4994 | ConversionCommon Stock | 22,439 | Not disclosed | Not disclosed |
DisclosureSEC source: 0000950170-24-115004 · ownership.xml · nonDerivative · entry 2 Taylor Joseph Michael · CIK 0002036111 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 35,671 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · price: Each share of the issuer's Preferred Stock automatically converted into one (1) share of the issuer's Common Stock immediately prior to the closing of the issuer's initial public offering on October 15, 2024 and had no expiration date. F2 · balance_after: Represents 13,232 RSUs. Read SEC document |
| October 11, 2024 Filed Oct 16, 2024 20:17 UTC | Ceribell, Inc. CBLL · Entity 4994 | GrantCommon Stock | 6,618 | $0.00 | $0.00 |
DisclosureSEC source: 0000950170-24-115004 · ownership.xml · nonDerivative · entry 1 Taylor Joseph Michael · CIK 0002036111 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 13,232 F1 · shares: Represents 6,618 restricted stock units ("RSUs"). F2 · balance_after: Represents 13,232 RSUs. 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.