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person · Reporting owner

Schenkein David P

Disclosed activity across 5 companies

Tapewire entity
40558
SEC CIK
0001578200

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
AGIOS PHARMACEUTICALS, INC.AGIO · Entity 4499DirectorJune 20, 2024June 24, 2024
Denali Therapeutics Inc.DNLI · Entity 1735DirectorJune 03, 2026June 05, 2026
Prime Medicine, Inc.PRME · Entity 5281DirectorJune 05, 2026June 08, 2026
REGENERON PHARMACEUTICALS, INC.REGN · Entity 2010DirectorJanuary 02, 2026January 06, 2026
bluebird bio, Inc.BLUE · Entity 78923DirectorJune 18, 2020June 22, 2020

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.

AGIOS PHARMACEUTICALS, INC.

Report date June 20, 2024 · Filed June 24, 2024

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Restricted stock unitsSEC Table II · derivative / convertible securityDirect2,120 Reported balance After 2024-06-20 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2024-06-20 · Grant · Acquired 2,120 · Balance 2,120

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

F2: The restricted stock units were granted on June 20, 2024. The shares underlying the stock units will vest in full on June 20, 2025. Vested shares will be delivered to the reporting person within three business days after such shares become vested.

Stock options (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $42.45 · Expires 2034-06-20Direct11,774 Reported balance After 2024-06-20 transaction · row 2 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 2 · 2024-06-20 · Grant · Acquired 11,774 · Balance 11,774

F3: This option was granted on June 20, 2024. The shares underlying this option vest as to 100% of the underlying shares on June 20, 2025.

Filing footnotes · ownership attribution and instrument terms

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

F2: The restricted stock units were granted on June 20, 2024. The shares underlying the stock units will vest in full on June 20, 2025. Vested shares will be delivered to the reporting person within three business days after such shares become vested.

F3: This option was granted on June 20, 2024. The shares underlying this option vest as to 100% of the underlying shares on June 20, 2025.

Denali Therapeutics Inc.

Report date June 03, 2026 · Filed June 05, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect21,665 Reported balance After 2026-06-03 transaction · row 1 Account or security details depend on footnotes; rows are not merged.
1 source row

Row 1 · 2026-06-03 · Grant · Acquired 6,408 · Balance 21,665

F1: Each share is represented by a Restricted Stock Unit ("RSU") and a contingent right to receive one share of common stock of the Issuer. 100% of the RSUs shall vest upon the earlier of (i) the one year anniversary of the grant date or (ii) the day preceding the Issuer's next annual meeting of stockholders occurring after the grant date.

F2: Includes 6,408 unvested RSUs.

Stock Option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $19.66 · Expires 2036-06-03Direct19,226 Reported balance After 2026-06-03 transaction · row 4 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 4 · 2026-06-03 · Grant · Acquired 19,226 · Balance 19,226

F5: 100% of the shares subject to the option shall vest upon the earlier of (i) the one year anniversary of the grant date or (ii) the day preceding the Issuer's next annual meeting of stockholders occurring after the grant date.

Common StockSEC Table I · non-derivativeIndirectSee footnote26,232 Reported balance Holding disclosure · report date 2026-06-03 · row 2 Holding and transaction disclosures are not merged.
1 source row

Row 2 · Balance 26,232

F3: The shares are held of record by the David P. Schenkein 2004 Revocable Trust, for which the Reporting Person serves as a trustee.

Common StockSEC Table I · non-derivativeIndirectSee footnote31,232 Reported balance Holding disclosure · report date 2026-06-03 · row 3 Holding and transaction disclosures are not merged.
1 source row

Row 3 · Balance 31,232

F4: The shares are held of record by the Amy P. Schenkein 2004 Revocable Trust, for which the Reporting Person's spouse serves as a trustee.

Filing footnotes · ownership attribution and instrument terms

F1: Each share is represented by a Restricted Stock Unit ("RSU") and a contingent right to receive one share of common stock of the Issuer. 100% of the RSUs shall vest upon the earlier of (i) the one year anniversary of the grant date or (ii) the day preceding the Issuer's next annual meeting of stockholders occurring after the grant date.

F2: Includes 6,408 unvested RSUs.

F3: The shares are held of record by the David P. Schenkein 2004 Revocable Trust, for which the Reporting Person serves as a trustee.

F4: The shares are held of record by the Amy P. Schenkein 2004 Revocable Trust, for which the Reporting Person's spouse serves as a trustee.

F5: 100% of the shares subject to the option shall vest upon the earlier of (i) the one year anniversary of the grant date or (ii) the day preceding the Issuer's next annual meeting of stockholders occurring after the grant date.

Prime Medicine, Inc.

Report date June 05, 2026 · Filed June 08, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Stock Option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $3.06 · Expires 2036-06-05Direct75,000 Reported balance After 2026-06-05 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2026-06-05 · Grant · Acquired 75,000 · Balance 75,000

F1: The shares subject to this option shall vest in full upon the earlier of (i) June 5, 2027 or (ii) the date of the next annual meeting of stockholders, subject to the Reporting Person's continuous service to the Issuer through such vesting date.

Filing footnotes · ownership attribution and instrument terms

F1: The shares subject to this option shall vest in full upon the earlier of (i) June 5, 2027 or (ii) the date of the next annual meeting of stockholders, subject to the Reporting Person's continuous service to the Issuer through such vesting date.

REGENERON PHARMACEUTICALS, INC.

Report date January 02, 2026 · Filed January 06, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect603 Reported balance After 2026-01-02 transaction · row 1
1 source row

Row 1 · 2026-01-02 · Grant · Acquired 155 · Balance 603

F1: Reflects an acquisition of time-based vesting restricted stock units each representing a contingent right to receive one share of the Issuer's common stock.

Non-Qualified Stock Option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $772.76 · Expires 2036-01-02Direct1,962 Reported balance After 2026-01-02 transaction · row 2 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 2 · 2026-01-02 · Grant · Acquired 1,962 · Balance 1,962

F2: On the date of the Issuer's first annual meeting of shareholders following the date of grant, a portion of these stock options equal to the portion of one year that has passed from the date of grant shall then become exercisable, and the remainder shall become exercisable on the first anniversary of the date of grant.

Filing footnotes · ownership attribution and instrument terms

F1: Reflects an acquisition of time-based vesting restricted stock units each representing a contingent right to receive one share of the Issuer's common stock.

F2: On the date of the Issuer's first annual meeting of shareholders following the date of grant, a portion of these stock options equal to the portion of one year that has passed from the date of grant shall then become exercisable, and the remainder shall become exercisable on the first anniversary of the date of grant.

bluebird bio, Inc.

Report date June 18, 2020 · Filed June 22, 2020

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect6,832 Last balance in matching sequence After 2020-06-18 transaction · row 2 Source-order balances reconcile. Account continuity and personal attribution are not independently verified.
2 source rows

Row 1 · 2020-06-18 · Grant · Acquired 156 · Balance 5,332

F1: These restricted stock units for common stock vest 100% on the earlier of June 18, 2021 or the date of the next annual meeting of stockholders.

Row 2 · 2020-06-18 · Grant · Acquired 1,500 · Balance 6,832

F1: These restricted stock units for common stock vest 100% on the earlier of June 18, 2021 or the date of the next annual meeting of stockholders.

Stock Option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $64.09 · Expires 2030-06-18Direct3,000 Reported balance After 2020-06-18 transaction · row 3 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 3 · 2020-06-18 · Grant · Acquired 3,000 · Balance 3,000

F2: This option vests 100% on the earlier of June 18, 2021 or the date of the next annual meeting of stockholders.

Filing footnotes · ownership attribution and instrument terms

F1: These restricted stock units for common stock vest 100% on the earlier of June 18, 2021 or the date of the next annual meeting of stockholders.

F2: This option vests 100% on the earlier of June 18, 2021 or the date of the next annual meeting of stockholders.

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
April 03, 2017 Filed Apr 5, 2017 20:04 UTC AGIOS PHARMACEUTICALS, INC. AGIO · Entity 4499 Exercise / conversionStock option (right to buy) · Derivative 3,000 $0.00 Strike: $0.30 $0.00
Disclosure

SEC source: 0001209191-17-025572 · doc4.xml · derivative · entry 5

Schenkein David P · CIK 0001578200 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 195,656

Underlying: Common stock · 3,000 shares

Expires 2019-08-12

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.

F1 · kind: This exercise was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F6 · derivative.exercise_date: This option was granted on August 13, 2009. The shares underlying this option vest as to 25% of the shares on August 1, 2010, with the remaining 75% vesting in 36 equal monthly installments thereafter.

Read SEC document
April 03, 2017 Filed Apr 5, 2017 20:04 UTC AGIOS PHARMACEUTICALS, INC. AGIO · Entity 4499 SaleCommon stock 3,000 $58.62 $175,860.00
Disclosure

SEC source: 0001209191-17-025572 · doc4.xml · nonDerivative · entry 2

Schenkein David P · CIK 0001578200 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F3 · price: The price reported is the weighted average of the shares sold. The shares were sold at varying prices in the range of $58.01 to $58.97. The reporting person undertakes, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.

Read SEC document
April 03, 2017 Filed Apr 5, 2017 20:04 UTC AGIOS PHARMACEUTICALS, INC. AGIO · Entity 4499 Exercise / conversionCommon stock 3,000 $0.30 $907.50
Disclosure

SEC source: 0001209191-17-025572 · doc4.xml · nonDerivative · entry 1

Schenkein David P · CIK 0001578200 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,000

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: This exercise was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

Read SEC document
March 01, 2017 Filed Mar 3, 2017 21:36 UTC AGIOS PHARMACEUTICALS, INC. AGIO · Entity 4499 Exercise / conversionStock option (right to buy) · Derivative 3,000 $0.00 Strike: $0.30 $0.00
Disclosure

SEC source: 0001209191-17-017611 · doc4.xml · derivative · entry 5

Schenkein David P · CIK 0001578200 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 198,656

Underlying: Common stock · 3,000 shares

Expires 2019-08-12

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.

F1 · kind: This exercise was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F6 · derivative.exercise_date: This option was granted on August 13, 2009. The shares underlying this option vest as to 25% of the shares on August 1, 2010, with the remaining 75% vesting in 36 equal monthly installments thereafter.

Read SEC document
March 01, 2017 Filed Mar 3, 2017 21:36 UTC AGIOS PHARMACEUTICALS, INC. AGIO · Entity 4499 SaleCommon stock 3,000 $50.47 $151,410.00
Disclosure

SEC source: 0001209191-17-017611 · doc4.xml · nonDerivative · entry 2

Schenkein David P · CIK 0001578200 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F3 · price: The price reported is the weighted average of the shares sold. The shares were sold at varying prices in the range of $50.06 to $50.70. The reporting person undertakes, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.

Read SEC document
March 01, 2017 Filed Mar 3, 2017 21:36 UTC AGIOS PHARMACEUTICALS, INC. AGIO · Entity 4499 Exercise / conversionCommon stock 3,000 $0.30 $907.50
Disclosure

SEC source: 0001209191-17-017611 · doc4.xml · nonDerivative · entry 1

Schenkein David P · CIK 0001578200 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,000

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: This exercise was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

Read SEC document
March 01, 2017 Filed Mar 3, 2017 16:21 UTC bluebird bio, Inc. BLUE · Entity 78923 Exercise / conversionStock Option (right to buy) · Derivative 5,000 $0.00 Strike: $8.16 $0.00
Disclosure

SEC source: 0001209191-17-017513 · doc4.xml · derivative · entry 3

Schenkein David P · CIK 0001578200 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,361

Underlying: Common Stock · 5,000 shares

Expires 2023-04-29

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: This options vests annually over a three period beginning April 29, 2013.

Read SEC document
March 01, 2017 Filed Mar 3, 2017 16:21 UTC bluebird bio, Inc. BLUE · Entity 78923 SaleCommon Stock 5,000 $89.53 $447,632.50
Disclosure

SEC source: 0001209191-17-017513 · doc4.xml · nonDerivative · entry 2

Schenkein David P · CIK 0001578200 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,176

F1 · price: The range in prices for the transaction reported on this line was $89.15 to $89.75. The average weighted price was $89.5265. The reporting person will provide, upon request by the SEC, the issuer or security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
March 01, 2017 Filed Mar 3, 2017 16:21 UTC bluebird bio, Inc. BLUE · Entity 78923 Exercise / conversionCommon Stock 5,000 $8.16 $40,779.00
Disclosure

SEC source: 0001209191-17-017513 · doc4.xml · nonDerivative · entry 1

Schenkein David P · CIK 0001578200 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,176

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 21, 2017 Filed Feb 23, 2017 21:08 UTC AGIOS PHARMACEUTICALS, INC. AGIO · Entity 4499 GrantStock option (right to buy) · Derivative 142,900 $0.00 Strike: $50.40 $0.00
Disclosure

SEC source: 0001209191-17-013751 · doc4.xml · derivative · entry 1

Schenkein David P · CIK 0001578200 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 142,900

Underlying: Common stock · 142,900 shares

Expires 2027-02-20

F1 · derivative.exercise_date: This option was granted on February 21, 2017. The shares underlying this option vest as to 25% of the underlying shares on February 21, 2018, with the remaining 75% vesting in 36 equal monthly installments thereafter.

Read SEC document
February 16, 2017 Filed Feb 17, 2017 21:36 UTC AGIOS PHARMACEUTICALS, INC. AGIO · Entity 4499 Exercise / conversionStock option (right to buy) · Derivative 6,000 $0.00 Strike: $0.30 $0.00
Disclosure

SEC source: 0001209191-17-012144 · doc4.xml · derivative · entry 5

Schenkein David P · CIK 0001578200 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 201,656

Underlying: Common stock · 6,000 shares

Expires 2019-08-12

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.

F1 · kind: This exercise was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F6 · derivative.exercise_date: This option was granted on August 13, 2009. The shares underlying this option vest as to 25% of the shares on August 1, 2010, with the remaining 75% vesting in 36 equal monthly installments thereafter.

Read SEC document
February 16, 2017 Filed Feb 17, 2017 21:36 UTC AGIOS PHARMACEUTICALS, INC. AGIO · Entity 4499 SaleCommon stock 6,000 $50.01 $300,060.00
Disclosure

SEC source: 0001209191-17-012144 · doc4.xml · nonDerivative · entry 2

Schenkein David P · CIK 0001578200 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F3 · price: The price reported is the weighted average of the shares sold. The shares were sold at varying prices in the range of $50.00 to $50.05. The reporting person undertakes, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.

Read SEC document
February 16, 2017 Filed Feb 17, 2017 21:36 UTC AGIOS PHARMACEUTICALS, INC. AGIO · Entity 4499 Exercise / conversionCommon stock 6,000 $0.30 $1,815.00
Disclosure

SEC source: 0001209191-17-012144 · doc4.xml · nonDerivative · entry 1

Schenkein David P · CIK 0001578200 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,000

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: This exercise was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

Read SEC document
January 26, 2017 Filed Jan 27, 2017 22:02 UTC AGIOS PHARMACEUTICALS, INC. AGIO · Entity 4499 GrantStock option (right to buy) · Derivative 68,182 $0.00 Strike: $9.05 $0.00
Disclosure

SEC source: 0001209191-17-005946 · doc4.xml · derivative · entry 1

Schenkein David P · CIK 0001578200 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 136,363

Underlying: Common stock · 68,182 shares

Expires 2023-04-29

F1 · derivative.exercise_date: This option was originally granted on April 30, 2013 for the purchase of 136,363 shares of common stock. The option vests as to 50% of the underlying shares upon the achievement of a performance milestone, and as to the remaining 50% of upon the achievement of a second performance milestone. The Company's board of directors determined that the first performance milestone was achieved on December 3, 2015, resulting in the vesting of this option as to 68,181 shares. On January 26, 2017, the Company's board of directors determined that the second performance milestone was achieved, resulting in the vesting of this option as to the remaining 68,182 shares.

Read SEC document
June 02, 2016 Filed Jan 23, 2017 16:03 UTC Amendment bluebird bio, Inc. BLUE · Entity 78923 GrantCommon Stock 1,000 $0.00 $0.00
Disclosure

SEC source: 0001209191-17-005069 · doc4a.xml · nonDerivative · entry 1

Schenkein David P · CIK 0001578200 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,176

F1 · security: These restricted stock units for common stock vest 100% on the earlier of June 2, 2017, or the date of the next annual meeting of stockholders.

F2 · balance_after: Includes 1,176 shares previously acquired and included on the Form 4 filed on December 22, 2014 by the reporting person.

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.