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IWAKI YUICHI

Disclosed activity across 1 company

Tapewire entity
69138
SEC CIK
0001263965

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
MEDICINOVA INCMNOV · Entity 7011President and CEOJanuary 16, 2026January 20, 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.

MEDICINOVA INC

Report date January 16, 2026 · Filed January 20, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Employee Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $2.10 · Expires 2035-01-06Direct450,000 Reported balance After 2026-01-16 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2026-01-16 · Grant · Acquired 450,000 · Balance 450,000

F1: On January 7, 2025, the reporting person was granted an option to purchase 450,000 shares of common stock. The option vests based on the satisfaction of certain performance criteria for the fiscal year ended December 31, 2025. Such performance criteria for 2025 were met, resulting in full vesting of the option.

Filing footnotes · ownership attribution and instrument terms

F1: On January 7, 2025, the reporting person was granted an option to purchase 450,000 shares of common stock. The option vests based on the satisfaction of certain performance criteria for the fiscal year ended December 31, 2025. Such performance criteria for 2025 were met, resulting in full vesting of the option.

Transaction history

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Purchases/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 dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
January 16, 2026 Filed Jan 20, 2026 17:03 UTC MEDICINOVA INC MNOV · Entity 7011 GrantEmployee Stock Option (Right to Buy) · Derivative 450,000 $0.00 Strike: $2.10 $0.00
Disclosure

SEC source: 0001683168-26-000428 · ownership.xml · derivative · entry 1

IWAKI YUICHI · CIK 0001263965 · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 450,000

Underlying: Common Stock · 450,000 shares

Expires 2035-01-06

F1 · balance_after: On January 7, 2025, the reporting person was granted an option to purchase 450,000 shares of common stock. The option vests based on the satisfaction of certain performance criteria for the fiscal year ended December 31, 2025. Such performance criteria for 2025 were met, resulting in full vesting of the option.

Read SEC document
February 12, 2025 Filed Feb 14, 2025 16:50 UTC MEDICINOVA INC MNOV · Entity 7011 GrantEmployee Stock Option (Right to Buy) · Derivative 100,000 $0.00 Strike: $1.84 $0.00
Disclosure

SEC source: 0001683168-25-001044 · ownership.xml · derivative · entry 1

IWAKI YUICHI · CIK 0001263965 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 100,000

Underlying: Common Stock · 100,000 shares

Expires 2035-02-11

F1 · derivative.exercise_date: The option vests over a period of one year in equal monthly installments from the 2/12/2025 date of grant.

Read SEC document
January 07, 2025 Filed Jan 10, 2025 16:00 UTC MEDICINOVA INC MNOV · Entity 7011 GrantEmployee Stock Option (Right to Buy) · Derivative 400,000 $0.00 Strike: $1.52 $0.00
Disclosure

SEC source: 0001683168-25-000218 · ownership.xml · derivative · entry 1

IWAKI YUICHI · CIK 0001263965 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 400,000

Underlying: Common Stock · 400,000 shares

Expires 2034-01-17

F1 · balance_after: On January 18, 2024, the reporting person was granted an option to purchase 400,000 shares of common stock. The option vests based on the satisfaction of certain performance criteria for the fiscal year ended December 31, 2024. Such performance criteria for 2024 were met, resulting in full vesting of the option.

Read SEC document
January 09, 2024 Filed Jan 11, 2024 16:51 UTC MEDICINOVA INC MNOV · Entity 7011 GrantEmployee Stock Option (Right to Buy) · Derivative 210,000 $0.00 Strike: $2.40 $0.00
Disclosure

SEC source: 0001683168-24-000221 · ownership.xml · derivative · entry 1

IWAKI YUICHI · CIK 0001263965 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 210,000

Underlying: Common Stock · 210,000 shares

Expires 2033-01-31

F1 · balance_after: On February 1, 2023, the reporting person was granted an option to purchase 300,000 shares of common stock. The option vests based on the satisfaction of certain performance criteria for the fiscal year ended December 31, 2023. Such performance criteria for 2023 were achieved at the 70% attainment level, resulting in vesting of the option as to 210,000 shares.

Read SEC document
January 23, 2023 Filed Jan 25, 2023 17:19 UTC MEDICINOVA INC MNOV · Entity 7011 GrantEmployee Stock Option (Right to Buy) · Derivative 235,125 $0.00 Strike: $2.25 $0.00
Disclosure

SEC source: 0001683168-23-000345 · ownership.xml · derivative · entry 1

IWAKI YUICHI · CIK 0001263965 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 235,125

Underlying: Common Stock · 235,125 shares

Expires 2032-01-26

F1 · balance_after: On January 27, 2022, the reporting person was granted an option to purchase 247,500 shares of common stock. The option vests based on the satisfaction of certain performance criteria for the fiscal year ended December 31, 2022. Such performance criteria for 2022 were achieved at the 95% attainment level, resulting in vesting of the option as to 235,125 shares.

Read SEC document
January 27, 2022 Filed Jan 31, 2022 21:00 UTC MEDICINOVA INC MNOV · Entity 7011 GrantEmployee Stock Option (Right to Buy) · Derivative 302,500 $0.00 Strike: $5.92 $0.00
Disclosure

SEC source: 0001683168-22-000594 · ownership.xml · derivative · entry 1

IWAKI YUICHI · CIK 0001263965 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 302,500

Underlying: Common Stock · 302,500 shares

Expires 2031-02-17

F1 · balance_after: On February 18, 2021, the reporting person was granted an option to purchase 550,000 shares of common stock. The option vests based on the satisfaction of certain performance criteria for the fiscal year ended December 31, 2021. Such performance criteria for 2021 were achieved at the 55% attainment level, resulting in vesting of the option as to 302,500 shares.

Read SEC document
July 09, 2021 Filed Jul 23, 2021 16:27 UTC MEDICINOVA INC MNOV · Entity 7011 Exercise / conversionEmployee Stock option (Right to Buy) · Derivative 39,583 $0.00 Strike: $2.54 $0.00
Disclosure

SEC source: 0001683168-21-003082 · ownership.xml · derivative · entry 3

IWAKI YUICHI · CIK 0001263965 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 39,583 shares

Expires 2021-07-12

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.

F2 · derivative.exercise_date: The option vested over a period of 4 years in equal monthly installments from the 7/13/2011 date of grant and is now fully vested.

Read SEC document
July 09, 2021 Filed Jul 23, 2021 16:27 UTC MEDICINOVA INC MNOV · Entity 7011 Exercise / conversionCommon Stock 39,583 $2.54 $100,540.82
Disclosure

SEC source: 0001683168-21-003082 · ownership.xml · nonDerivative · entry 1

IWAKI YUICHI · CIK 0001263965 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 966,933

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.

Read SEC document
February 25, 2021 Filed Mar 1, 2021 15:34 UTC MEDICINOVA INC MNOV · Entity 7011 Exercise / conversionEmployee Stock option(Right to Buy) · Derivative 86,250 $0.00 Strike: $2.46 $0.00
Disclosure

SEC source: 0001683168-21-000740 · ownership.xml · derivative · entry 3

IWAKI YUICHI · CIK 0001263965 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 86,250 shares

Expires 2021-08-02

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.

Read SEC document
February 25, 2021 Filed Mar 1, 2021 15:34 UTC MEDICINOVA INC MNOV · Entity 7011 Exercise / conversionCommon Stock 86,250 $2.46 $212,175.00
Disclosure

SEC source: 0001683168-21-000740 · ownership.xml · nonDerivative · entry 1

IWAKI YUICHI · CIK 0001263965 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 927,350

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.

Read SEC document
February 02, 2021 Filed Feb 4, 2021 16:16 UTC MEDICINOVA INC MNOV · Entity 7011 GrantEmployee Stock Option (Right to Buy) · Derivative 495,000 $0.00 Strike: $6.89 $0.00
Disclosure

SEC source: 0001683168-21-000391 · ownership.xml · derivative · entry 1

IWAKI YUICHI · CIK 0001263965 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 495,000

Underlying: Common Stock · 495,000 shares

Expires 2030-01-08

F1 · balance_after: On January 09, 2020, the reporting person was granted an option to purchase 550,000 shares of common stock. The option vests based on the satisfaction of certain performance criteria for the fiscal year ended December 31, 2020. Such performance criteria for 2020 were achieved at the 90% attainment level, resulting in vesting of the option as to 495,000 shares.

Read SEC document
April 08, 2020 Filed Apr 13, 2020 21:40 UTC MEDICINOVA INC MNOV · Entity 7011 Exercise / conversionEmployee Stock option (Right to Buy) · Derivative 60,417 $0.00 Strike: $2.54 $0.00
Disclosure

SEC source: 0001683168-20-001157 · ownership.xml · derivative · entry 4

IWAKI YUICHI · CIK 0001263965 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 39,583

Underlying: Common stock · 60,417 shares

Expires 2021-07-12

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_date: The option vested over a period of 4 years in equal monthly installments from the 7/13/2011 date of grant and is now fully vested.

Read SEC document
April 08, 2020 Filed Apr 13, 2020 21:40 UTC MEDICINOVA INC MNOV · Entity 7011 Exercise / conversionCommon Stock 60,417 $2.54 $153,459.18
Disclosure

SEC source: 0001683168-20-001157 · ownership.xml · nonDerivative · entry 1

IWAKI YUICHI · CIK 0001263965 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 841,100

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.

Read SEC document
March 12, 2020 Filed Mar 12, 2020 18:39 UTC MEDICINOVA INC MNOV · Entity 7011 PurchaseCommon Stock 20,000 $3.10 $62,000.00
Disclosure

SEC source: 0001683168-20-000786 · ownership.xml · nonDerivative · entry 1

IWAKI YUICHI · CIK 0001263965 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 780,683

F1 · balance_after: The reported shares were purchased in multiple transactions. The purchase price reported in Column 4 is a weighted average price at price ranging from $3.055 to $3.14. The reporting person undertakes to provide to MediciNova, Inc., any security holder of MediciNova, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

F2 · balance_after: Includes 1,291shares acquired under MediciNova's employee stock purchase plan, which are exempt under Rule 16b-3(c).

Read SEC document
January 09, 2020 Filed Jan 10, 2020 20:02 UTC MEDICINOVA INC MNOV · Entity 7011 GrantEmployee Stock Option (Right to Buy) · Derivative 412,500 $0.00 Strike: $9.67 $0.00
Disclosure

SEC source: 0001683168-20-000087 · ownership.xml · derivative · entry 1

IWAKI YUICHI · CIK 0001263965 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 412,500

Underlying: Common Stock · 412,500 shares

Expires 2029-01-14

F1 · balance_after: On January 15, 2019, the reporting person was granted an option to purchase 550,000 shares of common stock. The option vests based on MNOV's satisfaction of certain performance criteria for the fiscal year ended December 31, 2019. The performance criterial for 2019 were achieved at the 75% attainment level, resulting in vesting of the option as to 412,500 shares.

Read SEC document
January 15, 2019 Filed Jan 17, 2019 16:22 UTC MEDICINOVA INC MNOV · Entity 7011 GrantEmployee Stock Option (Right to Buy) · Derivative 470,000 $0.00 Strike: $7.00 $0.00
Disclosure

SEC source: 0001683168-19-000147 · ownership.xml · derivative · entry 1

IWAKI YUICHI · CIK 0001263965 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 470,000

Underlying: Common Stock · 470,000 shares

Expires 2028-01-05

F1 · balance_after: On January 6, 2018, the reporting person was granted an option to purchase 470,000 shares of common stock. The option vests based on MNOV's satisfaction of certain performance criteria for the fiscal year ended December 31, 2018. The Performance criteria for 2018 have been met, resulting in full vesting of the option.

Read SEC document
January 03, 2019 Filed Jan 7, 2019 06:04 UTC MEDICINOVA INC MNOV · Entity 7011 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 18,572 $0.00 Strike: $2.20 $0.00
Disclosure

SEC source: 0001683168-19-000025 · ownership.xml · derivative · entry 3

IWAKI YUICHI · CIK 0001263965 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 18,572 shares

Expires 2019-01-29

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_date: The option vested over a period of 4 years in equal monthly installments from the 1/30/2009 date of grant and is now fully vested.

Read SEC document
January 03, 2019 Filed Jan 7, 2019 06:04 UTC MEDICINOVA INC MNOV · Entity 7011 Exercise / conversionCommon Stock 18,572 $2.20 $40,858.40
Disclosure

SEC source: 0001683168-19-000025 · ownership.xml · nonDerivative · entry 1

IWAKI YUICHI · CIK 0001263965 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 759,392

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.

F1 · balance_after: Includes 226 shares acquired under MediciNova's employee stock purchase plan, which are exempt under Rule 16b-3(c).

Read SEC document
March 05, 2018 Filed Mar 7, 2018 16:31 UTC MEDICINOVA INC MNOV · Entity 7011 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 50,003 $0.00 Strike: $2.20 $0.00
Disclosure

SEC source: 0001683168-18-000614 · iwaki_f4.xml · derivative · entry 3

IWAKI YUICHI · CIK 0001263965 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 50,003 shares

Expires 2019-01-29

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.

F2 · derivative.exercise_date: The option vested over a period of 4 years in equal monthly installments from the 1/30/2009 date of grant and is now fully vested.

Read SEC document
March 05, 2018 Filed Mar 7, 2018 16:31 UTC MEDICINOVA INC MNOV · Entity 7011 Exercise / conversionCommon Stock 50,003 $2.20 $110,006.60
Disclosure

SEC source: 0001683168-18-000614 · iwaki_f4.xml · nonDerivative · entry 1

IWAKI YUICHI · CIK 0001263965 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 740,594

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.

Read SEC document
January 06, 2018 Filed Jan 9, 2018 18:12 UTC MEDICINOVA INC MNOV · Entity 7011 GrantEmployee Stock Option (Right to Buy) · Derivative 450,000 $0.00 Strike: $6.10 $0.00
Disclosure

SEC source: 0001683168-18-000087 · iwaki_f4-010618.xml · derivative · entry 1

IWAKI YUICHI · CIK 0001263965 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 450,000

Underlying: Common Stock · 450,000 shares

Expires 2027-01-17

F1 · balance_after: On January 18, 2017, the reporting person was granted an option to purchase 450,000 shares of common stock. The option vests based on MNOV's satisfaction of certain performance criteria for the fiscal year ended December 31, 2017. The Performance criteria for 2017 have been met, resulting in full vesting of the option.

Read SEC document
January 03, 2018 Filed Jan 5, 2018 16:51 UTC MEDICINOVA INC MNOV · Entity 7011 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 53,363 $0.00 Strike: $4.42 $0.00
Disclosure

SEC source: 0001683168-18-000059 · iwaki_frm4.xml · derivative · entry 3

IWAKI YUICHI · CIK 0001263965 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 53,363 shares

Expires 2018-01-06

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.

F2 · derivative.exercise_date: The option vested over a period of 4 years in equal monthly installments from the 1/7/2008 date of grant and is now fully vested.

Read SEC document
January 03, 2018 Filed Jan 5, 2018 16:51 UTC MEDICINOVA INC MNOV · Entity 7011 Exercise / conversionCommon Stock 53,363 $4.42 $235,864.46
Disclosure

SEC source: 0001683168-18-000059 · iwaki_frm4.xml · nonDerivative · entry 1

IWAKI YUICHI · CIK 0001263965 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 690,591

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.

Read SEC document
November 02, 2017 Filed Nov 6, 2017 08:15 UTC MEDICINOVA INC MNOV · Entity 7011 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 21,067 $0.00 Strike: $4.42 $0.00
Disclosure

SEC source: 0001683168-17-002840 · iwaki_frm4.xml · derivative · entry 3

IWAKI YUICHI · CIK 0001263965 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 21,067 shares

Expires 2018-01-06

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_date: The option vested over a period of 4 years in equal monthly installments from the 1/7/2008 date of grant and is now fully vested.

Read SEC document
November 02, 2017 Filed Nov 6, 2017 08:15 UTC MEDICINOVA INC MNOV · Entity 7011 Exercise / conversionCommon Stock 21,067 $4.42 $93,116.14
Disclosure

SEC source: 0001683168-17-002840 · iwaki_frm4.xml · nonDerivative · entry 1

IWAKI YUICHI · CIK 0001263965 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 637,228

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.

F1 · balance_after: Includes shares acquired under MediciNova's employee stock purchase plan, which are exempt under Rule 16b-3(c).

Read SEC document
January 18, 2017 Filed Jan 20, 2017 17:28 UTC MEDICINOVA INC MNOV · Entity 7011 GrantEmployee Stock Option (Right to Buy) · Derivative 320,000 $0.00 Strike: $3.91 $0.00
Disclosure

SEC source: 0001683168-17-000138 · iwaki_f4.xml · derivative · entry 1

IWAKI YUICHI · CIK 0001263965 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 320,000

Underlying: Common Stock · 320,000 shares

Expires 2026-01-06

F1 · balance_after: On January 7, 2016, the reporting person was granted an option to purchase 320,000 shares of common stock. The option vests based on MNOV's satisfaction of certain performance criteria by December 31, 2016. The Performance criteria have been met, resulting in full vesting of the option.

Read SEC document
July 13, 2011 Filed Apr 13, 2020 21:40 UTC MEDICINOVA INC MNOV · Entity 7011 GrantEmployee Stock option (Right to Buy) · Derivative 100,000 $0.00 Strike: $2.54 $0.00
Disclosure

SEC source: 0001683168-20-001157 · ownership.xml · derivative · entry 3

IWAKI YUICHI · CIK 0001263965 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 100,000

Underlying: Common stock · 100,000 shares

Expires 2021-07-12

F2 · date: Due to an administrative oversight this option award initially was not reported.

F3 · derivative.exercise_date: The option vested over a period of 4 years in equal monthly installments from the 7/13/2011 date of grant and is now fully vested.

F2 · balance_after: Due to an administrative oversight this option award initially was not reported.

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.