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person · Reporting owner

Kerr Douglas

Disclosed activity across 2 companies

Tapewire entity
22908
SEC CIK
0001814189

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Dyne Therapeutics, Inc.DYN · Entity 3948Chief Medical OfficerSeptember 04, 2026September 08, 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.

Dyne Therapeutics, Inc.

Report date September 04, 2026 · Filed September 08, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect163,854 Reported balance After 2026-09-04 transaction · row 1 Account or security details depend on footnotes; rows are not merged.
1 source row

Row 1 · 2026-09-04 · Sale · Disposed 3,745 · Balance 163,854

F1: Represents shares automatically sold by the Reporting Person to satisfy tax withholding obligations in connection with the vesting of restricted stock units granted to the Reporting Person on September 3, 2024. The automatic sale of the Reporting Person's shares is provided for in a restricted stock unit agreement constituting a "binding contract" consistent with the affirmative defense to liability under Rule 10b5-1 and the sale does not represent a discretionary trade by the Reporting Person.

F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices within the range of $24.27 to $24.50, 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 sold at each separate price within the range set forth in this footnote of this Form 4.

Common StockSEC Table I · non-derivativeDirect162,564 Reported balance After 2026-09-08 transaction · row 2 Account or security details depend on footnotes; rows are not merged.
1 source row

Row 2 · 2026-09-08 · Sale · Disposed 1,290 · Balance 162,564

F3: Represents shares automatically sold by the Reporting Person to satisfy tax withholding obligations in connection with the vesting of restricted stock units granted to the Reporting Person on December 4, 2024. The automatic sale of the Reporting Person's shares is provided for in a restricted stock unit agreement constituting a "binding contract" consistent with the affirmative defense to liability under Rule 10b5-1 and the sale does not represent a discretionary trade by the Reporting Person.

F4: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices within the range of $18.77 to $18.92, 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 sold at each separate price within the range set forth in this footnote of this Form 4.

F5: Includes 125,126 unvested RSUs.

Filing footnotes · ownership attribution and instrument terms

F1: Represents shares automatically sold by the Reporting Person to satisfy tax withholding obligations in connection with the vesting of restricted stock units granted to the Reporting Person on September 3, 2024. The automatic sale of the Reporting Person's shares is provided for in a restricted stock unit agreement constituting a "binding contract" consistent with the affirmative defense to liability under Rule 10b5-1 and the sale does not represent a discretionary trade by the Reporting Person.

F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices within the range of $24.27 to $24.50, 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 sold at each separate price within the range set forth in this footnote of this Form 4.

F3: Represents shares automatically sold by the Reporting Person to satisfy tax withholding obligations in connection with the vesting of restricted stock units granted to the Reporting Person on December 4, 2024. The automatic sale of the Reporting Person's shares is provided for in a restricted stock unit agreement constituting a "binding contract" consistent with the affirmative defense to liability under Rule 10b5-1 and the sale does not represent a discretionary trade by the Reporting Person.

F4: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices within the range of $18.77 to $18.92, 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 sold at each separate price within the range set forth in this footnote of this Form 4.

F5: Includes 125,126 unvested RSUs.

Past disclosures · reporting ended (1)

No longer tracked through insider filings. These historical balances do not imply present ownership or a zero position.

Generation Bio Co.

Report date January 29, 2024 · Filed January 31, 2024

Section 16 reporting ended · disclosed 2024-01-31. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect385,628 Ending reported balance After 2024-01-29 transaction · row 2
2 source rows · reconciled sequence

Row 1 · 2024-01-29 · Exercise / conversion · Acquired 5,021 · Balance 387,104

F1: Each restricted stock unit represents the right to receive one share of the company's common stock.

Row 2 · 2024-01-29 · Tax withholding · Disposed 1,476 · Balance 385,628

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect0 Reported balance After 2024-01-29 transaction · row 3 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 3 · 2024-01-29 · Exercise / conversion · Disposed 5,021 · Balance 0

F1: Each restricted stock unit represents the right to receive one share of the company's common stock.

F2: On January 20, 2023, the reporting person was granted 26,775 restricted stock units. The shares underlying the restricted stock units vest over four years, with 25% of the shares vested on January 15, 2024 and the remaining shares vesting in equal quarterly installments thereafter.

F3: Reflects the forfeit of 15,060 restricted stock units in connection with the reporting person's separation from the company.

Filing footnotes · ownership attribution and instrument terms

F1: Each restricted stock unit represents the right to receive one share of the company's common stock.

F2: On January 20, 2023, the reporting person was granted 26,775 restricted stock units. The shares underlying the restricted stock units vest over four years, with 25% of the shares vested on January 15, 2024 and the remaining shares vesting in equal quarterly installments thereafter.

F3: Reflects the forfeit of 15,060 restricted stock units in connection with the reporting person's separation from the company.

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
July 08, 2021 Filed Jul 12, 2021 20:02 UTC Generation Bio Co. GBIO · Entity 67174 SaleCommon Stock 1,889 $25.39 $47,961.71
Disclosure

SEC source: 0001415889-21-003583 · form4-07122021_010711.xml · nonDerivative · entry 3

Kerr Douglas · CIK 0001814189 · CHIEF MEDICAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 326,558

F1 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2020.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25.21 to $25.61, inclusive.

Read SEC document
July 08, 2021 Filed Jul 12, 2021 20:02 UTC Generation Bio Co. GBIO · Entity 67174 SaleCommon Stock 1,629 $24.99 $40,708.71
Disclosure

SEC source: 0001415889-21-003583 · form4-07122021_010711.xml · nonDerivative · entry 2

Kerr Douglas · CIK 0001814189 · CHIEF MEDICAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 328,447

F1 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2020.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $24.20 to $25.20, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (2) and (3) of this Form 4.

Read SEC document
July 08, 2021 Filed Jul 12, 2021 20:02 UTC Generation Bio Co. GBIO · Entity 67174 Exercise / conversionCommon Stock 3,518 $5.16 $18,152.88
Disclosure

SEC source: 0001415889-21-003583 · form4-07122021_010711.xml · nonDerivative · entry 1

Kerr Douglas · CIK 0001814189 · CHIEF MEDICAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 330,076

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 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2020.

Read SEC document
April 05, 2021 Filed Apr 7, 2021 20:05 UTC Generation Bio Co. GBIO · Entity 67174 Exercise / conversionStock Option (right to buy) · Derivative 14,072 $0.00 Strike: $5.16 $0.00
Disclosure

SEC source: 0001415889-21-001930 · form4-04072021_010433.xml · derivative · entry 4

Kerr Douglas · CIK 0001814189 · CHIEF MEDICAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 42,217

Underlying: Common Stock · 14,072 shares

Expires 2030-03-04

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 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2020.

F4 · derivative.exercise_date: The option to purchase 56,289 shares of common stock was granted on March 5, 2020. The shares underlying the option vest over four years, with 25% of the shares vesting on March 5, 2021 and the remaining shares vesting in equal quarterly installments thereafter.

Read SEC document
April 05, 2021 Filed Apr 7, 2021 20:05 UTC Generation Bio Co. GBIO · Entity 67174 SaleCommon Stock 3,321 $30.68 $101,888.28
Disclosure

SEC source: 0001415889-21-001930 · form4-04072021_010433.xml · nonDerivative · entry 3

Kerr Douglas · CIK 0001814189 · CHIEF MEDICAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 326,558

F1 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2020.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $30.36 to $31.17, inclusive.

Read SEC document
April 05, 2021 Filed Apr 7, 2021 20:05 UTC Generation Bio Co. GBIO · Entity 67174 SaleCommon Stock 10,751 $29.91 $321,562.41
Disclosure

SEC source: 0001415889-21-001930 · form4-04072021_010433.xml · nonDerivative · entry 2

Kerr Douglas · CIK 0001814189 · CHIEF MEDICAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 329,879

F1 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2020.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $29.34 to $30.32, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (2) and (3) of this Form 4.

Read SEC document
April 05, 2021 Filed Apr 7, 2021 20:05 UTC Generation Bio Co. GBIO · Entity 67174 Exercise / conversionCommon Stock 14,072 $5.16 $72,611.52
Disclosure

SEC source: 0001415889-21-001930 · form4-04072021_010433.xml · nonDerivative · entry 1

Kerr Douglas · CIK 0001814189 · CHIEF MEDICAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 340,630

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 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2020.

Read SEC document
March 05, 2021 Filed Mar 9, 2021 21:05 UTC Generation Bio Co. GBIO · Entity 67174 Exercise / conversionStock Option (right to buy) · Derivative 11,267 $0.00 Strike: $4.59 $0.00
Disclosure

SEC source: 0001415889-21-001382 · form4-03092021_010305.xml · derivative · entry 9

Kerr Douglas · CIK 0001814189 · CHIEF MEDICAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 89,959

Underlying: Common Stock · 11,267 shares

Expires 2028-04-01

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 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2020.

F8 · derivative.exercise_date: The option to purchase 123,760 shares of common stock was granted on April 2, 2018. The shares underlying the option vest over four years, with 25% of the shares vested on April 2, 2019 and the remaining shares vesting in equal quarterly installments thereafter.

Read SEC document
March 05, 2021 Filed Mar 9, 2021 21:05 UTC Generation Bio Co. GBIO · Entity 67174 SaleCommon Stock 100 $35.58 $3,558.00
Disclosure

SEC source: 0001415889-21-001382 · form4-03092021_010305.xml · nonDerivative · entry 8

Kerr Douglas · CIK 0001814189 · CHIEF MEDICAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 326,558

F1 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2020.

Read SEC document
March 05, 2021 Filed Mar 9, 2021 21:05 UTC Generation Bio Co. GBIO · Entity 67174 SaleCommon Stock 500 $34.77 $17,385.00
Disclosure

SEC source: 0001415889-21-001382 · form4-03092021_010305.xml · nonDerivative · entry 7

Kerr Douglas · CIK 0001814189 · CHIEF MEDICAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 326,658

F1 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2020.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $34.50 to $35.15, inclusive.

Read SEC document
March 05, 2021 Filed Mar 9, 2021 21:05 UTC Generation Bio Co. GBIO · Entity 67174 SaleCommon Stock 400 $33.75 $13,500.00
Disclosure

SEC source: 0001415889-21-001382 · form4-03092021_010305.xml · nonDerivative · entry 6

Kerr Douglas · CIK 0001814189 · CHIEF MEDICAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 327,158

F1 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2020.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $33.46 to $34.41, inclusive.

Read SEC document
March 05, 2021 Filed Mar 9, 2021 21:05 UTC Generation Bio Co. GBIO · Entity 67174 SaleCommon Stock 775 $32.97 $25,551.75
Disclosure

SEC source: 0001415889-21-001382 · form4-03092021_010305.xml · nonDerivative · entry 5

Kerr Douglas · CIK 0001814189 · CHIEF MEDICAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 327,558

F1 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2020.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $32.37 to $33.36, inclusive.

Read SEC document
March 05, 2021 Filed Mar 9, 2021 21:05 UTC Generation Bio Co. GBIO · Entity 67174 SaleCommon Stock 4,315 $31.87 $137,519.05
Disclosure

SEC source: 0001415889-21-001382 · form4-03092021_010305.xml · nonDerivative · entry 4

Kerr Douglas · CIK 0001814189 · CHIEF MEDICAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 328,333

F1 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2020.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.36 to $32.35, inclusive.

Read SEC document
March 05, 2021 Filed Mar 9, 2021 21:05 UTC Generation Bio Co. GBIO · Entity 67174 SaleCommon Stock 2,500 $30.92 $77,300.00
Disclosure

SEC source: 0001415889-21-001382 · form4-03092021_010305.xml · nonDerivative · entry 3

Kerr Douglas · CIK 0001814189 · CHIEF MEDICAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 332,648

F1 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2020.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $30.35 to $31.29, inclusive.

Read SEC document
March 05, 2021 Filed Mar 9, 2021 21:05 UTC Generation Bio Co. GBIO · Entity 67174 SaleCommon Stock 2,677 $29.68 $79,453.36
Disclosure

SEC source: 0001415889-21-001382 · form4-03092021_010305.xml · nonDerivative · entry 2

Kerr Douglas · CIK 0001814189 · CHIEF MEDICAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 335,148

F1 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2020.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $29.31 to $30.29, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (2) and (7) of this Form 4.

Read SEC document
March 05, 2021 Filed Mar 9, 2021 21:05 UTC Generation Bio Co. GBIO · Entity 67174 Exercise / conversionCommon Stock 11,267 $4.59 $51,715.53
Disclosure

SEC source: 0001415889-21-001382 · form4-03092021_010305.xml · nonDerivative · entry 1

Kerr Douglas · CIK 0001814189 · CHIEF MEDICAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 337,825

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 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2020.

Read SEC document
February 08, 2021 Filed Feb 10, 2021 21:05 UTC Generation Bio Co. GBIO · Entity 67174 Exercise / conversionStock Option (right to buy) · Derivative 11,267 $0.00 Strike: $4.59 $0.00
Disclosure

SEC source: 0001415889-21-000623 · form4-02102021_040201.xml · derivative · entry 4

Kerr Douglas · CIK 0001814189 · CHIEF MEDICAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 101,226

Underlying: Common Stock · 11,267 shares

Expires 2028-04-01

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 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2020.

F4 · derivative.exercise_date: The option to purchase 123,760 shares of common stock was granted on April 2, 2018. The shares underlying the option vest over four years, with 25% of the shares vested on April 2, 2019 and the remaining shares vesting in equal quarterly installments thereafter.

Read SEC document
February 08, 2021 Filed Feb 10, 2021 21:05 UTC Generation Bio Co. GBIO · Entity 67174 SaleCommon Stock 3,767 $34.08 $128,379.36
Disclosure

SEC source: 0001415889-21-000623 · form4-02102021_040201.xml · nonDerivative · entry 3

Kerr Douglas · CIK 0001814189 · CHIEF MEDICAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 326,558

F1 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2020.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $33.65 to $34.60, inclusive.

Read SEC document
February 08, 2021 Filed Feb 10, 2021 21:05 UTC Generation Bio Co. GBIO · Entity 67174 SaleCommon Stock 7,500 $33.01 $247,575.00
Disclosure

SEC source: 0001415889-21-000623 · form4-02102021_040201.xml · nonDerivative · entry 2

Kerr Douglas · CIK 0001814189 · CHIEF MEDICAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 330,325

F1 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2020.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $32.52 to $33.50, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (2) and (3) of this Form 4.

Read SEC document
February 08, 2021 Filed Feb 10, 2021 21:05 UTC Generation Bio Co. GBIO · Entity 67174 Exercise / conversionCommon Stock 11,267 $4.59 $51,715.53
Disclosure

SEC source: 0001415889-21-000623 · form4-02102021_040201.xml · nonDerivative · entry 1

Kerr Douglas · CIK 0001814189 · CHIEF MEDICAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 337,825

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 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2020.

Read SEC document
January 22, 2021 Filed Feb 5, 2021 22:05 UTC Generation Bio Co. GBIO · Entity 67174 GrantStock Option (right to buy) · Derivative 73,500 $0.00 Strike: $30.25 $0.00
Disclosure

SEC source: 0001415889-21-000546 · form4-02052021_020207.xml · derivative · entry 1

Kerr Douglas · CIK 0001814189 · CHIEF MEDICAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 73,500

Underlying: Common Stock · 73,500 shares

Expires 2031-01-21

F1 · derivative.exercise_date: This option was granted on January 22, 2021. The shares underlying the option vest over four years, with 25% of the shares vesting on January 22, 2022 and the remaining shares vesting in equal quarterly installments thereafter.

Read SEC document
January 11, 2021 Filed Jan 13, 2021 21:07 UTC Generation Bio Co. GBIO · Entity 67174 Exercise / conversionStock Option (right to buy) · Derivative 11,267 $0.00 Strike: $4.59 $0.00
Disclosure

SEC source: 0001415889-21-000313 · form4-01132021_010152.xml · derivative · entry 5

Kerr Douglas · CIK 0001814189 · CHIEF MEDICAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 112,493

Underlying: Common Stock · 11,267 shares

Expires 2028-04-01

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 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2020.

F5 · derivative.exercise_date: The option to purchase 123,760 shares of common stock was granted on April 2, 2018. The shares underlying the option vest over four years, with 25% of the shares vested on April 2, 2019 and the remaining shares vesting in equal quarterly installments thereafter.

Read SEC document
January 11, 2021 Filed Jan 13, 2021 21:07 UTC Generation Bio Co. GBIO · Entity 67174 SaleCommon Stock 300 $28.80 $8,640.00
Disclosure

SEC source: 0001415889-21-000313 · form4-01132021_010152.xml · nonDerivative · entry 4

Kerr Douglas · CIK 0001814189 · CHIEF MEDICAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 326,558

F1 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2020.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $28.69 to $28.88, inclusive.

Read SEC document
January 11, 2021 Filed Jan 13, 2021 21:07 UTC Generation Bio Co. GBIO · Entity 67174 SaleCommon Stock 4,721 $28.05 $132,424.05
Disclosure

SEC source: 0001415889-21-000313 · form4-01132021_010152.xml · nonDerivative · entry 3

Kerr Douglas · CIK 0001814189 · CHIEF MEDICAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 326,858

F1 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2020.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.64 to $28.59, inclusive.

Read SEC document
January 11, 2021 Filed Jan 13, 2021 21:07 UTC Generation Bio Co. GBIO · Entity 67174 SaleCommon Stock 6,246 $27.17 $169,703.82
Disclosure

SEC source: 0001415889-21-000313 · form4-01132021_010152.xml · nonDerivative · entry 2

Kerr Douglas · CIK 0001814189 · CHIEF MEDICAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 331,579

F1 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2020.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.62 to $27.62, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (2) through (4) of this Form 4.

Read SEC document
January 11, 2021 Filed Jan 13, 2021 21:07 UTC Generation Bio Co. GBIO · Entity 67174 Exercise / conversionCommon Stock 11,267 $4.59 $51,715.53
Disclosure

SEC source: 0001415889-21-000313 · form4-01132021_010152.xml · nonDerivative · entry 1

Kerr Douglas · CIK 0001814189 · CHIEF MEDICAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 337,825

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 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 19, 2020.

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.