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Foster Wayne

Disclosed activity across 2 companies

Tapewire entity
67961
SEC CIK
0001709769

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Atea Pharmaceuticals, Inc.AVIR · Entity 5580EVP, Chief Accounting OfficerJanuary 31, 2026February 03, 2026
Mersana Therapeutics, Inc.MRSN · Entity 69982Vice President of FinanceJanuary 23, 2019January 25, 2019

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.

Atea Pharmaceuticals, Inc.

Report date January 31, 2026 · Filed February 03, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect79,329 Ending reported balance After 2026-01-31 transaction · row 2
2 source rows · reconciled sequence

Row 1 · 2026-01-31 · Exercise / conversion · Acquired 41,333 · Balance 91,461

F1: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

Row 2 · 2026-01-31 · Tax withholding · Disposed 12,132 · Balance 79,329

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect0 Reported balance After 2026-01-31 transaction · row 3 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 3 · 2026-01-31 · Exercise / conversion · Disposed 33,333 · Balance 0

F1: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

F2: The original grant of 100,000 RSUs vested in three (3) equal annual installments on the first three anniversaries of January 31, 2023 such that the RSUs were fully vested as of January 31, 2026.

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect0 Reported balance After 2026-01-31 transaction · row 4 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 4 · 2026-01-31 · Exercise / conversion · Disposed 8,000 · Balance 0

F1: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

F3: Reflects RSUs following the satisfaction of performance criteria of previously granted performance restricted stock units that vested on January 31, 2026.

Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $4.24 · Expires 2036-01-30Direct108,000 Reported balance After 2026-01-31 transaction · row 5 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 5 · 2026-01-31 · Grant · Acquired 108,000 · Balance 108,000

F4: The option vests and becomes exercisable in forty-eight (48) equal monthly installments following January 31, 2026 such that the option is fully vested on January 31, 2030.

Filing footnotes · ownership attribution and instrument terms

F1: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

F2: The original grant of 100,000 RSUs vested in three (3) equal annual installments on the first three anniversaries of January 31, 2023 such that the RSUs were fully vested as of January 31, 2026.

F3: Reflects RSUs following the satisfaction of performance criteria of previously granted performance restricted stock units that vested on January 31, 2026.

F4: The option vests and becomes exercisable in forty-eight (48) equal monthly installments following January 31, 2026 such that the option is fully vested on January 31, 2030.

Mersana Therapeutics, Inc.

Report date January 23, 2019 · Filed January 25, 2019

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Stock Option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $3.51 · Expires 2029-01-23Direct30,750 Reported balance After 2019-01-23 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2019-01-23 · Grant · Acquired 30,750 · Balance 30,750

F1: The options vest in equal quarterly installments over the first four years after the vesting commencement date, January 23, 2019.

Filing footnotes · ownership attribution and instrument terms

F1: The options vest in equal quarterly installments over the first four years after the vesting commencement date, January 23, 2019.

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 31, 2026 Filed Feb 3, 2026 19:42 UTC Atea Pharmaceuticals, Inc. AVIR · Entity 5580 GrantStock Option (Right to Buy) · Derivative 108,000 $0.00 Strike: $4.24 $0.00
Disclosure

SEC source: 0001193125-26-036261 · ownership.xml · derivative · entry 5

Foster Wayne · CIK 0001709769 · EVP, Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 108,000

Underlying: Common Stock · 108,000 shares

Expires 2036-01-30

F4 · derivative.exercise_date: The option vests and becomes exercisable in forty-eight (48) equal monthly installments following January 31, 2026 such that the option is fully vested on January 31, 2030.

Read SEC document
January 31, 2026 Filed Feb 3, 2026 19:42 UTC Atea Pharmaceuticals, Inc. AVIR · Entity 5580 Exercise / conversionRestricted Stock Units · Derivative 8,000 $0.00 $0.00
Disclosure

SEC source: 0001193125-26-036261 · ownership.xml · derivative · entry 4

Foster Wayne · CIK 0001709769 · EVP, Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 8,000 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.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

F3 · derivative.exercise_date: Reflects RSUs following the satisfaction of performance criteria of previously granted performance restricted stock units that vested on January 31, 2026.

F3 · derivative.expiration_date: Reflects RSUs following the satisfaction of performance criteria of previously granted performance restricted stock units that vested on January 31, 2026.

Read SEC document
January 31, 2026 Filed Feb 3, 2026 19:42 UTC Atea Pharmaceuticals, Inc. AVIR · Entity 5580 Exercise / conversionRestricted Stock Units · Derivative 33,333 $0.00 $0.00
Disclosure

SEC source: 0001193125-26-036261 · ownership.xml · derivative · entry 3

Foster Wayne · CIK 0001709769 · EVP, Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 33,333 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.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

F2 · derivative.exercise_date: The original grant of 100,000 RSUs vested in three (3) equal annual installments on the first three anniversaries of January 31, 2023 such that the RSUs were fully vested as of January 31, 2026.

F2 · derivative.expiration_date: The original grant of 100,000 RSUs vested in three (3) equal annual installments on the first three anniversaries of January 31, 2023 such that the RSUs were fully vested as of January 31, 2026.

Read SEC document
January 31, 2026 Filed Feb 3, 2026 19:42 UTC Atea Pharmaceuticals, Inc. AVIR · Entity 5580 Tax withholdingCommon Stock 12,132 $4.24 $51,439.68
Disclosure

SEC source: 0001193125-26-036261 · ownership.xml · nonDerivative · entry 2

Foster Wayne · CIK 0001709769 · EVP, Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 79,329

Read SEC document
January 31, 2026 Filed Feb 3, 2026 19:42 UTC Atea Pharmaceuticals, Inc. AVIR · Entity 5580 Exercise / conversionCommon Stock 41,333 Not disclosed Not disclosed
Disclosure

SEC source: 0001193125-26-036261 · ownership.xml · nonDerivative · entry 1

Foster Wayne · CIK 0001709769 · EVP, Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 91,461

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 · price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

Read SEC document
January 31, 2025 Filed Feb 4, 2025 18:00 UTC Atea Pharmaceuticals, Inc. AVIR · Entity 5580 GrantStock Option (Right to Buy) · Derivative 120,100 $0.00 Strike: $3.06 $0.00
Disclosure

SEC source: 0000950170-25-013844 · ownership.xml · derivative · entry 6

Foster Wayne · CIK 0001709769 · EVP, Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 120,100

Underlying: Common Stock · 120,100 shares

Expires 2035-01-30

F5 · derivative.exercise_date: The option vests and becomes exercisable in forty-eight (48) equal monthly installments following January 31, 2025 such that the option is fully vested on January 31, 2029.

Read SEC document
January 31, 2025 Filed Feb 4, 2025 18:00 UTC Atea Pharmaceuticals, Inc. AVIR · Entity 5580 GrantRestricted Stock Units · Derivative 8,000 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-013844 · ownership.xml · derivative · entry 5

Foster Wayne · CIK 0001709769 · EVP, Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,000

Underlying: Common Stock · 8,000 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

F4 · derivative.exercise_date: Reflects RSUs following the satisfaction of performance criteria of previously granted PSUs. The RSUs will vest on January 31, 2026, subject to the Reporting Person's continued service with the Issuer.

F4 · derivative.expiration_date: Reflects RSUs following the satisfaction of performance criteria of previously granted PSUs. The RSUs will vest on January 31, 2026, subject to the Reporting Person's continued service with the Issuer.

Read SEC document
January 31, 2025 Filed Feb 4, 2025 18:00 UTC Atea Pharmaceuticals, Inc. AVIR · Entity 5580 Exercise / conversionRestricted Stock Units · Derivative 33,333 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-013844 · ownership.xml · derivative · entry 4

Foster Wayne · CIK 0001709769 · EVP, Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,333

Underlying: Common Stock · 33,333 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.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

F3 · derivative.exercise_date: The original grant of 100,000 RSUs vested or will vest in three (3) equal annual installments on the first three anniversaries of January 31, 2023 such that the RSUs are fully vested on January 31, 2026.

F3 · derivative.expiration_date: The original grant of 100,000 RSUs vested or will vest in three (3) equal annual installments on the first three anniversaries of January 31, 2023 such that the RSUs are fully vested on January 31, 2026.

Read SEC document
January 31, 2025 Filed Feb 4, 2025 18:00 UTC Atea Pharmaceuticals, Inc. AVIR · Entity 5580 Tax withholdingCommon Stock 12,062 $3.06 $36,909.72
Disclosure

SEC source: 0000950170-25-013844 · ownership.xml · nonDerivative · entry 3

Foster Wayne · CIK 0001709769 · EVP, Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 50,128

Read SEC document
January 31, 2025 Filed Feb 4, 2025 18:00 UTC Atea Pharmaceuticals, Inc. AVIR · Entity 5580 GrantCommon Stock 8,000 Not disclosed Not disclosed
Disclosure

SEC source: 0000950170-25-013844 · ownership.xml · nonDerivative · entry 2

Foster Wayne · CIK 0001709769 · EVP, Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 62,190

F2 · price: Reflects shares received upon the satisfaction of performance criteria and time-vesting requirements associated with previously granted performance restricted stock units ("PSUs").

Read SEC document
January 31, 2025 Filed Feb 4, 2025 18:00 UTC Atea Pharmaceuticals, Inc. AVIR · Entity 5580 Exercise / conversionCommon Stock 33,333 Not disclosed Not disclosed
Disclosure

SEC source: 0000950170-25-013844 · ownership.xml · nonDerivative · entry 1

Foster Wayne · CIK 0001709769 · EVP, Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 54,190

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 · price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

Read SEC document
February 01, 2024 Filed Feb 2, 2024 21:26 UTC Atea Pharmaceuticals, Inc. AVIR · Entity 5580 SaleCommon Stock 12,477 $3.84 $47,904.19
Disclosure

SEC source: 0000950170-24-010969 · ownership.xml · nonDerivative · entry 2

Foster Wayne · CIK 0001709769 · EVP, Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,857

F2 · shares: Shares were sold solely to cover taxes upon the vesting of restricted stock units pursuant to a standing Rule 10b5-1 instruction dated March 15, 2022.

Read SEC document
January 31, 2024 Filed Feb 2, 2024 21:26 UTC Atea Pharmaceuticals, Inc. AVIR · Entity 5580 GrantStock Option (Right to Buy) · Derivative 120,100 $0.00 Strike: $4.16 $0.00
Disclosure

SEC source: 0000950170-24-010969 · ownership.xml · derivative · entry 4

Foster Wayne · CIK 0001709769 · EVP, Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 120,100

Underlying: Common Stock · 120,100 shares

Expires 2034-01-30

F4 · derivative.exercise_date: The option vests and becomes exercisable in forty-eight (48) equal monthly installments following January 31, 2024 such that the option is fully vested on January 31, 2028.

Read SEC document
January 31, 2024 Filed Feb 2, 2024 21:26 UTC Atea Pharmaceuticals, Inc. AVIR · Entity 5580 Exercise / conversionRestricted Stock Units · Derivative 33,334 $0.00 $0.00
Disclosure

SEC source: 0000950170-24-010969 · ownership.xml · derivative · entry 3

Foster Wayne · CIK 0001709769 · EVP, Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 66,666

Underlying: Common Stock · 33,334 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.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

F3 · derivative.exercise_date: The original grant of 100,000 RSUs vested or will vest in three (3) equal annual installments on the first three anniversaries of January 31, 2023 such that the RSUs are fully vested on January 31, 2026.

F3 · derivative.expiration_date: The original grant of 100,000 RSUs vested or will vest in three (3) equal annual installments on the first three anniversaries of January 31, 2023 such that the RSUs are fully vested on January 31, 2026.

Read SEC document
January 31, 2024 Filed Feb 2, 2024 21:26 UTC Atea Pharmaceuticals, Inc. AVIR · Entity 5580 Exercise / conversionCommon Stock 33,334 Not disclosed Not disclosed
Disclosure

SEC source: 0000950170-24-010969 · ownership.xml · nonDerivative · entry 1

Foster Wayne · CIK 0001709769 · EVP, Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,334

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 · price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

Read SEC document
January 31, 2023 Filed Feb 2, 2023 18:38 UTC Atea Pharmaceuticals, Inc. AVIR · Entity 5580 GrantStock Option (Right to Buy) · Derivative 140,000 $0.00 Strike: $4.63 $0.00
Disclosure

SEC source: 0000899243-23-003629 · doc4.xml · derivative · entry 2

Foster Wayne · CIK 0001709769 · EVP, Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 140,000

Underlying: Common Stock · 140,000 shares

Expires 2033-01-30

F3 · derivative.exercise_date: The option vests and becomes exercisable in forty-eight (48) equal monthly installments following January 31, 2023 such that the option is fully vested on January 31, 2027.

Read SEC document
January 31, 2023 Filed Feb 2, 2023 18:38 UTC Atea Pharmaceuticals, Inc. AVIR · Entity 5580 GrantRestricted Stock Units · Derivative 100,000 $0.00 $0.00
Disclosure

SEC source: 0000899243-23-003629 · doc4.xml · derivative · entry 1

Foster Wayne · CIK 0001709769 · EVP, Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 100,000

Underlying: Common Stock · 100,000 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

F2 · derivative.exercise_date: The RSUs vest in three (3) equal annual installments on the first three anniversaries of the grant date such that the RSUs are fully vested on January 31, 2026.

F2 · derivative.expiration_date: The RSUs vest in three (3) equal annual installments on the first three anniversaries of the grant date such that the RSUs are fully vested on January 31, 2026.

Read SEC document
January 31, 2022 Filed Feb 2, 2022 17:15 UTC Atea Pharmaceuticals, Inc. AVIR · Entity 5580 GrantStock Option (Right to Buy) · Derivative 120,000 $0.00 Strike: $7.14 $0.00
Disclosure

SEC source: 0000899243-22-004183 · doc4.xml · derivative · entry 1

Foster Wayne · CIK 0001709769 · EVP, Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 120,000

Underlying: Common Stock · 120,000 shares

Expires 2032-01-30

F1 · derivative.exercise_date: The option vests and becomes exercisable in forty-eight (48) equal monthly installments following January 31, 2022.

Read SEC document
January 29, 2021 Filed Feb 1, 2021 16:50 UTC Atea Pharmaceuticals, Inc. AVIR · Entity 5580 GrantStock Option (Right to Buy) · Derivative 71,750 $0.00 Strike: $73.00 $0.00
Disclosure

SEC source: 0000899243-21-003866 · doc4.xml · derivative · entry 1

Foster Wayne · CIK 0001709769 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 71,750

Underlying: Common Stock · 71,750 shares

Expires 2031-01-28

F1 · derivative.exercise_date: The option vests and becomes exercisable in forty-eight (48) equal monthly installments following January 29, 2021.

Read SEC document
October 29, 2020 Filed Oct 30, 2020 17:40 UTC Atea Pharmaceuticals, Inc. AVIR · Entity 5580 GrantStock Option (Right to Buy) · Derivative 40,000 $0.00 Strike: $24.00 $0.00
Disclosure

SEC source: 0000899243-20-029953 · doc4.xml · derivative · entry 1

Foster Wayne · CIK 0001709769 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,000

Underlying: Common Stock · 40,000 shares

Expires 2030-10-28

F1 · derivative.exercise_date: The option vests and becomes exercisable in 48 equal monthy installments following October 29, 2020.

Read SEC document
January 23, 2019 Filed Jan 25, 2019 16:05 UTC Mersana Therapeutics, Inc. MRSN · Entity 69982 GrantStock Option (right to buy) · Derivative 30,750 $0.00 Strike: $3.51 $0.00
Disclosure

SEC source: 0001104659-19-003410 · a4.xml · derivative · entry 1

Foster Wayne · CIK 0001709769 · Vice President of Finance

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,750

Underlying: Common Stock · 30,750 shares

Expires 2029-01-23

F1 · derivative.exercise_date: The options vest in equal quarterly installments over the first four years after the vesting commencement date, January 23, 2019.

Read SEC document
February 02, 2018 Filed Feb 6, 2018 16:26 UTC Mersana Therapeutics, Inc. MRSN · Entity 69982 GrantStock Option (right to buy) · Derivative 20,250 $0.00 Strike: $14.23 $0.00
Disclosure

SEC source: 0001104659-18-006858 · a4.xml · derivative · entry 1

Foster Wayne · CIK 0001709769 · Vice President of Finance

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,250

Underlying: Common Stock · 20,250 shares

Expires 2028-02-01

F1 · derivative.exercise_date: The options vest in equal quarterly installments over the first four years after the vesting commencement date, February 2, 2018.

Read SEC document
January 30, 2018 Filed Feb 1, 2018 16:01 UTC Mersana Therapeutics, Inc. MRSN · Entity 69982 Exercise / conversionOption to Purchase Common Stock · Derivative 2,499 $0.00 Strike: $6.98 $0.00
Disclosure

SEC source: 0001104659-18-005845 · a4.xml · derivative · entry 8

Foster Wayne · CIK 0001709769 · Vice President of Finance

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,834

Underlying: Common Stock · 2,499 shares

Expires 2027-03-13

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.

F4 · derivative.exercise_date: The original option grant for 13,333 option shares vests in equal quarterly installments over the first four years after the vesting commencement date, March 14, 2017.

Read SEC document
January 30, 2018 Filed Feb 1, 2018 16:01 UTC Mersana Therapeutics, Inc. MRSN · Entity 69982 Exercise / conversionOption to Purchase Common Stock · Derivative 3,262 $0.00 Strike: $4.10 $0.00
Disclosure

SEC source: 0001104659-18-005845 · a4.xml · derivative · entry 7

Foster Wayne · CIK 0001709769 · Vice President of Finance

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,155

Underlying: Common Stock · 3,262 shares

Expires 2026-08-29

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 original option grant for 13,047 option shares vests in equal quarterly installments over the first four years after the vesting commencement date, July 1, 2016.

Read SEC document
January 30, 2018 Filed Feb 1, 2018 16:01 UTC Mersana Therapeutics, Inc. MRSN · Entity 69982 Exercise / conversionOption to Purchase Common Stock · Derivative 8,055 $0.00 Strike: $1.53 $0.00
Disclosure

SEC source: 0001104659-18-005845 · a4.xml · derivative · entry 6

Foster Wayne · CIK 0001709769 · Vice President of Finance

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,084

Underlying: Common Stock · 8,055 shares

Expires 2025-06-11

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 original option grant for 32,222 option shares vests in equal quarterly installments over the first four years after the vesting commencement date, June 12, 2015.

Read SEC document
January 30, 2018 Filed Feb 1, 2018 16:01 UTC Mersana Therapeutics, Inc. MRSN · Entity 69982 Exercise / conversionOption to Purchase Common Stock · Derivative 889 $0.00 Strike: $1.62 $0.00
Disclosure

SEC source: 0001104659-18-005845 · a4.xml · derivative · entry 5

Foster Wayne · CIK 0001709769 · Vice President of Finance

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 889

Underlying: Common Stock · 889 shares

Expires 2024-12-15

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 · derivative.exercise_date: The original option grant for 3,555 option shares vests in equal quarterly installments over the first four years after the vesting commencement date, January 2, 2015.

Read SEC document
January 30, 2018 Filed Feb 1, 2018 16:01 UTC Mersana Therapeutics, Inc. MRSN · Entity 69982 Exercise / conversionCommon Stock 2,499 $6.98 $17,443.02
Disclosure

SEC source: 0001104659-18-005845 · a4.xml · nonDerivative · entry 4

Foster Wayne · CIK 0001709769 · Vice President of Finance

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 71,083

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 30, 2018 Filed Feb 1, 2018 16:01 UTC Mersana Therapeutics, Inc. MRSN · Entity 69982 Exercise / conversionCommon Stock 3,262 $4.10 $13,374.20
Disclosure

SEC source: 0001104659-18-005845 · a4.xml · nonDerivative · entry 3

Foster Wayne · CIK 0001709769 · Vice President of Finance

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 68,584

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 30, 2018 Filed Feb 1, 2018 16:01 UTC Mersana Therapeutics, Inc. MRSN · Entity 69982 Exercise / conversionCommon Stock 8,055 $1.53 $12,324.15
Disclosure

SEC source: 0001104659-18-005845 · a4.xml · nonDerivative · entry 2

Foster Wayne · CIK 0001709769 · Vice President of Finance

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 65,322

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 30, 2018 Filed Feb 1, 2018 16:01 UTC Mersana Therapeutics, Inc. MRSN · Entity 69982 Exercise / conversionCommon Stock 889 $1.62 $1,440.18
Disclosure

SEC source: 0001104659-18-005845 · a4.xml · nonDerivative · entry 1

Foster Wayne · CIK 0001709769 · Vice President of Finance

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 57,267

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

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.