TapewireFind a company

person · Reporting owner

Chan Steven

Disclosed activity across 3 companies

Tapewire entity
160964
SEC CIK
0001654907

Export transaction history ↓

Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Arcus Biosciences, Inc.RCUS · Entity 4104See RemarksJanuary 16, 2019January 18, 2019
Attovia Therapeutics, Inc.ATTO · Entity 4984Chief Financial OfficerAugust 04, 2026October 09, 2026
MyoKardia, Inc.MYOK · Entity 145206See RemarksJanuary 18, 2017January 20, 2017

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.

Arcus Biosciences, Inc.

Report date January 16, 2019 · Filed January 18, 2019

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Stock Option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $10.36 · Expires 2029-01-15Direct35,000 Reported balance After 2019-01-16 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2019-01-16 · Grant · Acquired 35,000 · Balance 35,000

F1: The option is exercisable in 48 equal monthly installments after January 16, 2019, subject to the Reporting Person's continued service to the Company.

Filing footnotes · ownership attribution and instrument terms

F1: The option is exercisable in 48 equal monthly installments after January 16, 2019, subject to the Reporting Person's continued service to the Company.

Attovia Therapeutics, Inc.

Report date August 04, 2026 · Filed October 09, 2026 · Amendment

Amendment: balances below belong to this corrected disclosure, not necessarily a complete replacement of earlier positions.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $17.00 · Expires 2036-08-03Direct140,000 Reported balance After 2026-08-04 transaction · row 1 Amendment: may correct only part of an earlier disclosure.
1 source row

Row 1 · 2026-08-04 · Grant · Acquired 140,000 · Balance 140,000

F1: 25% of the options shall vest on August 4, 2027 and the remaining options shall vest in equal monthly installments over the following 36 months, subject to continued service to the Issuer through such dates.

Filing footnotes · ownership attribution and instrument terms

F1: 25% of the options shall vest on August 4, 2027 and the remaining options shall vest in equal monthly installments over the following 36 months, subject to continued service to the Issuer through such dates.

MyoKardia, Inc.

Report date January 18, 2017 · Filed January 20, 2017

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $12.25 · Expires 2027-01-17Direct25,000 Reported balance After 2017-01-18 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2017-01-18 · Grant · Acquired 25,000 · Balance 25,000

F1: The shares underlying the option vest in 48 equal monthly installments from January 1, 2017, so long as the Reporting Person continues to be an employee of the Issuer through each vesting date. This option is subject to accelerated vesting upon termination without cause upon a change of control of the Issuer.

Filing footnotes · ownership attribution and instrument terms

F1: The shares underlying the option vest in 48 equal monthly installments from January 1, 2017, so long as the Reporting Person continues to be an employee of the Issuer through each vesting date. This option is subject to accelerated vesting upon termination without cause upon a change of control of the Issuer.

Transaction history

JSON API
Reset

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
August 04, 2026 Filed Oct 9, 2026 00:00 UTC Amendment Attovia Therapeutics, Inc. ATTO · Entity 4984 GrantStock Option (Right to Buy) · Derivative 140,000 $0.00 Strike: $17.00 $0.00
Disclosure

SEC source: 0001654907-26-000009 · form4a-10082026_111058.xml · derivative · entry 1

Chan Steven · CIK 0001654907 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 140,000

Underlying: Common Stock · 140,000 shares

Expires 2036-08-03

F1 · derivative.exercise_date: 25% of the options shall vest on August 4, 2027 and the remaining options shall vest in equal monthly installments over the following 36 months, subject to continued service to the Issuer through such dates.

Read SEC document
January 16, 2019 Filed Jan 18, 2019 18:25 UTC Arcus Biosciences, Inc. RCUS · Entity 4104 GrantStock Option (right to buy) · Derivative 35,000 $0.00 Strike: $10.36 $0.00
Disclosure

SEC source: 0001209191-19-004497 · doc4.xml · derivative · entry 1

Chan Steven · CIK 0001654907 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 35,000

Underlying: Common Stock · 35,000 shares

Expires 2029-01-15

F1 · derivative.exercise_date: The option is exercisable in 48 equal monthly installments after January 16, 2019, subject to the Reporting Person's continued service to the Company.

Read SEC document
January 18, 2017 Filed Jan 20, 2017 17:41 UTC MyoKardia, Inc. MYOK · Entity 145206 GrantStock Option (Right to Buy) · Derivative 25,000 $0.00 Strike: $12.25 $0.00
Disclosure

SEC source: 0000899243-17-001669 · doc4.xml · derivative · entry 1

Chan Steven · CIK 0001654907 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,000

Underlying: Common Stock · 25,000 shares

Expires 2027-01-17

F1 · derivative.exercise_date: The shares underlying the option vest in 48 equal monthly installments from January 1, 2017, so long as the Reporting Person continues to be an employee of the Issuer through each vesting date. This option is subject to accelerated vesting upon termination without cause upon a change of control of the Issuer.

Read SEC document
November 01, 2016 Filed Nov 2, 2016 17:41 UTC MyoKardia, Inc. MYOK · Entity 145206 GrantStock Option (Right to Buy) · Derivative 2,041 $0.00 Strike: $1.51 $0.00
Disclosure

SEC source: 0000899243-16-032642 · doc4.xml · derivative · entry 1

Chan Steven · CIK 0001654907 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,041

Underlying: Common Stock · 2,041 shares

Expires 2025-06-03

F1 · balance_after: On June 4, 2015, the Reporting Person was granted an option to purchase 8,163 shares of Common Stock under the issuer's 2012 Equity Incentive Plan, the vesting of which was subject to various conditions (other than the passage of time and continued employment) that were not tied to the market price of the issuer's securities. On November 1, 2016, one of the conditions was deemed to be achieved, resulting in the vesting and exercisability of 2,041 of the shares underlying such option.

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.