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SCHLEIFER LEONARD S

Disclosed activity across 1 company

Tapewire entity
70475
SEC CIK
0001218629

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
REGENERON PHARMACEUTICALS, INC.REGN · Entity 2010Director · Bd. Co-Chair, President & CEODecember 31, 2025January 05, 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.

REGENERON PHARMACEUTICALS, INC.

Report date December 31, 2025 · Filed January 05, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect214,523 Ending reported balance After 2025-12-31 transaction · row 2
2 source rows · reconciled sequence

Row 1 · 2025-12-31 · Exercise / conversion · Acquired 28,570 · Balance 243,093

Row 2 · 2025-12-31 · Tax withholding · Disposed 28,570 · Balance 214,523

2020 Performance Stock UnitsSEC Table II · derivative / convertible securityDirect595,077 Reported balance After 2025-12-31 transaction · row 7 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 7 · 2025-12-31 · Exercise / conversion · Disposed 28,570 · Balance 595,077

F1: Each performance restricted stock unit ("PSU") represents a contingent right to receive one share of Company stock. These PSUs were earned during the applicable five-year performance period and vested on December 31, 2025 but remain subject to a mandatory holding period of three years after vesting, which ends early upon the reporting person's death or disability or a change in control of the Company.

Common StockSEC Table I · non-derivativeIndirectBy 2024 GRAT127,484 Reported balance Holding disclosure · report date 2025-12-31 · row 3 Holding and transaction disclosures are not merged.
1 source row

Row 3 · Balance 127,484

Common StockSEC Table I · non-derivativeIndirectBy 2025 GRAT300,000 Reported balance Holding disclosure · report date 2025-12-31 · row 4 Holding and transaction disclosures are not merged.
1 source row

Row 4 · Balance 300,000

Common StockSEC Table I · non-derivativeIndirectBy 401(k) Plan5,989 Reported balance Holding disclosure · report date 2025-12-31 · row 5 Holding and transaction disclosures are not merged.
1 source row

Row 5 · Balance 5,989

Common StockSEC Table I · non-derivativeIndirectBy Trust39,985 Reported balance Holding disclosure · report date 2025-12-31 · row 6 Holding and transaction disclosures are not merged.
1 source row

Row 6 · Balance 39,985

Filing footnotes · ownership attribution and instrument terms

F1: Each performance restricted stock unit ("PSU") represents a contingent right to receive one share of Company stock. These PSUs were earned during the applicable five-year performance period and vested on December 31, 2025 but remain subject to a mandatory holding period of three years after vesting, which ends early upon the reporting person's death or disability or a change in control of 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
December 12, 2019 Filed Dec 13, 2019 21:05 UTC REGENERON PHARMACEUTICALS, INC. REGN · Entity 2010 Tax withholdingCommon Stock 97,209 $377.16 $36,663,346.44
Disclosure

SEC source: 0001237899-19-000031 · edgardoc.xml · nonDerivative · entry 4

SCHLEIFER LEONARD S · CIK 0001218629 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 474,499

F1 · kind: Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c).

Read SEC document
December 12, 2019 Filed Dec 13, 2019 21:05 UTC REGENERON PHARMACEUTICALS, INC. REGN · Entity 2010 Exercise / conversionCommon Stock 187,500 $21.25 $3,984,375.00
Disclosure

SEC source: 0001237899-19-000031 · edgardoc.xml · nonDerivative · entry 3

SCHLEIFER LEONARD S · CIK 0001218629 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 571,708

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: Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c).

Read SEC document
December 12, 2019 Filed Dec 13, 2019 21:05 UTC REGENERON PHARMACEUTICALS, INC. REGN · Entity 2010 Tax withholdingCommon Stock 64,754 $377.16 $24,422,618.64
Disclosure

SEC source: 0001237899-19-000031 · edgardoc.xml · nonDerivative · entry 2

SCHLEIFER LEONARD S · CIK 0001218629 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 384,208

F1 · kind: Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c).

Read SEC document
December 12, 2019 Filed Dec 13, 2019 21:05 UTC REGENERON PHARMACEUTICALS, INC. REGN · Entity 2010 Exercise / conversionCommon Stock 124,900 $21.25 $2,654,125.00
Disclosure

SEC source: 0001237899-19-000031 · edgardoc.xml · nonDerivative · entry 1

SCHLEIFER LEONARD S · CIK 0001218629 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 448,962

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: Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c).

Read SEC document
December 11, 2019 Filed Dec 13, 2019 21:05 UTC REGENERON PHARMACEUTICALS, INC. REGN · Entity 2010 GrantPerformance Stock Units · Derivative 25,155 $0.00 $0.00
Disclosure

SEC source: 0001237899-19-000031 · edgardoc.xml · derivative · entry 10

SCHLEIFER LEONARD S · CIK 0001218629 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,155

Underlying: Common Stock · 25,155 shares

Expires not disclosed

F4 · derivative.exercise_price: Each performance-based restricted stock unit ("PSU") represents the contingent right to receive one share of the issuer's common stock at vesting. The amount reported reflects the maximum number of PSUs that may vest based upon the achievement of certain performance metrics related to total shareholder return over four-year and/or five-year performance periods ending on December 11, 2023 and December 11, 2024, respectively. Between 50% and 225% of the target number of PSUs (i.e., between 50% and 225% of 11,180 PSUs) may vest upon achievement of predetermined total shareholder return percentages derived from compound annual growth rates of 5% to 15% for the applicable performance period. If none of the performance metrics are achieved at the conclusion of the performance periods, the award expires.

F4 · derivative.exercise_date: Each performance-based restricted stock unit ("PSU") represents the contingent right to receive one share of the issuer's common stock at vesting. The amount reported reflects the maximum number of PSUs that may vest based upon the achievement of certain performance metrics related to total shareholder return over four-year and/or five-year performance periods ending on December 11, 2023 and December 11, 2024, respectively. Between 50% and 225% of the target number of PSUs (i.e., between 50% and 225% of 11,180 PSUs) may vest upon achievement of predetermined total shareholder return percentages derived from compound annual growth rates of 5% to 15% for the applicable performance period. If none of the performance metrics are achieved at the conclusion of the performance periods, the award expires.

F4 · derivative.expiration_date: Each performance-based restricted stock unit ("PSU") represents the contingent right to receive one share of the issuer's common stock at vesting. The amount reported reflects the maximum number of PSUs that may vest based upon the achievement of certain performance metrics related to total shareholder return over four-year and/or five-year performance periods ending on December 11, 2023 and December 11, 2024, respectively. Between 50% and 225% of the target number of PSUs (i.e., between 50% and 225% of 11,180 PSUs) may vest upon achievement of predetermined total shareholder return percentages derived from compound annual growth rates of 5% to 15% for the applicable performance period. If none of the performance metrics are achieved at the conclusion of the performance periods, the award expires.

Read SEC document
December 11, 2019 Filed Dec 13, 2019 21:05 UTC REGENERON PHARMACEUTICALS, INC. REGN · Entity 2010 GrantNon-Qualified Stock Option (right to buy) · Derivative 81,278 $0.00 Strike: $372.46 $0.00
Disclosure

SEC source: 0001237899-19-000031 · edgardoc.xml · derivative · entry 9

SCHLEIFER LEONARD S · CIK 0001218629 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 81,278

Underlying: Common Stock · 81,278 shares

Expires 2029-12-11

F2 · derivative.exercise_date: The stock option award vests in four equal annual installments, commencing one year after the date of grant.

Read SEC document
March 21, 2019 Filed Mar 22, 2019 20:03 UTC REGENERON PHARMACEUTICALS, INC. REGN · Entity 2010 Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative 100 $0.00 Strike: $21.25 $0.00
Disclosure

SEC source: 0001708138-19-000008 · edgardoc.xml · derivative · entry 3

SCHLEIFER LEONARD S · CIK 0001218629 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 312,400

Underlying: Common Stock · 100 shares

Expires 2019-12-18

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: With respect to 187,500 underlying shares, the option became exercisable on December 31, 2012, based upon the satisfaction by the company of certain performance criteria during the period ended December 31, 2012. With respect to 125,000 underlying shares, the stock option award vested in four equal annual installments, commencing one year after the date of grant.

Read SEC document
March 21, 2019 Filed Mar 22, 2019 20:03 UTC REGENERON PHARMACEUTICALS, INC. REGN · Entity 2010 Exercise / conversionCommon Stock 100 $21.25 $2,125.00
Disclosure

SEC source: 0001708138-19-000008 · edgardoc.xml · nonDerivative · entry 1

SCHLEIFER LEONARD S · CIK 0001218629 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 424,062

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
December 13, 2018 Filed Dec 14, 2018 21:19 UTC REGENERON PHARMACEUTICALS, INC. REGN · Entity 2010 Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative 125,000 $0.00 Strike: $16.80 $0.00
Disclosure

SEC source: 0001237899-18-000022 · edgardoc.xml · derivative · entry 7

SCHLEIFER LEONARD S · CIK 0001218629 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 125,000 shares

Expires 2018-12-17

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: Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c).

F2 · derivative.exercise_date: With respect to 187,500 underlying shares, the option became exercisable on December 31, 2011, based upon the satisfaction by the company of certain performance criteria during the period ended December 31, 2011. With respect to 125,000 underlying shares, the stock option award vested in four equal annual installments, commencing one year after the date of grant.

Read SEC document
December 13, 2018 Filed Dec 14, 2018 21:19 UTC REGENERON PHARMACEUTICALS, INC. REGN · Entity 2010 Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative 187,500 $0.00 Strike: $16.80 $0.00
Disclosure

SEC source: 0001237899-18-000022 · edgardoc.xml · derivative · entry 6

SCHLEIFER LEONARD S · CIK 0001218629 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 125,000

Underlying: Common Stock · 187,500 shares

Expires 2018-12-17

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: Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c).

F2 · derivative.exercise_date: With respect to 187,500 underlying shares, the option became exercisable on December 31, 2011, based upon the satisfaction by the company of certain performance criteria during the period ended December 31, 2011. With respect to 125,000 underlying shares, the stock option award vested in four equal annual installments, commencing one year after the date of grant.

Read SEC document
December 13, 2018 Filed Dec 14, 2018 21:19 UTC REGENERON PHARMACEUTICALS, INC. REGN · Entity 2010 Tax withholdingCommon Stock 64,052 $377.31 $24,167,460.12
Disclosure

SEC source: 0001237899-18-000022 · edgardoc.xml · nonDerivative · entry 4

SCHLEIFER LEONARD S · CIK 0001218629 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 423,962

F1 · kind: Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c).

Read SEC document
December 13, 2018 Filed Dec 14, 2018 21:19 UTC REGENERON PHARMACEUTICALS, INC. REGN · Entity 2010 Exercise / conversionCommon Stock 125,000 $16.80 $2,100,000.00
Disclosure

SEC source: 0001237899-18-000022 · edgardoc.xml · nonDerivative · entry 3

SCHLEIFER LEONARD S · CIK 0001218629 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 488,014

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: Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c).

Read SEC document
December 13, 2018 Filed Dec 14, 2018 21:19 UTC REGENERON PHARMACEUTICALS, INC. REGN · Entity 2010 Tax withholdingCommon Stock 96,079 $377.31 $36,251,567.49
Disclosure

SEC source: 0001237899-18-000022 · edgardoc.xml · nonDerivative · entry 2

SCHLEIFER LEONARD S · CIK 0001218629 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 363,014

F1 · kind: Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c).

Read SEC document
December 13, 2018 Filed Dec 14, 2018 21:19 UTC REGENERON PHARMACEUTICALS, INC. REGN · Entity 2010 Exercise / conversionCommon Stock 187,500 $16.80 $3,150,000.00
Disclosure

SEC source: 0001237899-18-000022 · edgardoc.xml · nonDerivative · entry 1

SCHLEIFER LEONARD S · CIK 0001218629 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 459,093

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: Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c).

Read SEC document
December 12, 2018 Filed Dec 14, 2018 21:19 UTC REGENERON PHARMACEUTICALS, INC. REGN · Entity 2010 GrantNon-Qualified Stock Option (right to buy) · Derivative 129,013 $0.00 Strike: $381.40 $0.00
Disclosure

SEC source: 0001237899-18-000022 · edgardoc.xml · derivative · entry 8

SCHLEIFER LEONARD S · CIK 0001218629 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 129,013

Underlying: Common Stock · 129,013 shares

Expires 2028-12-12

F3 · derivative.exercise_date: The stock option award vests in four equal annual installments, commencing one year after the date of grant.

Read SEC document
December 13, 2017 Filed Dec 13, 2017 22:17 UTC REGENERON PHARMACEUTICALS, INC. REGN · Entity 2010 Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative 250,000 $0.00 Strike: $21.92 $0.00
Disclosure

SEC source: 0001237899-17-000033 · edgardoc.xml · derivative · entry 5

SCHLEIFER LEONARD S · CIK 0001218629 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 250,000 shares

Expires 2017-12-17

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: Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c).

F2 · derivative.exercise_date: The stock option award vests in four equal annual installments, commencing one year after the date of grant.

Read SEC document
December 13, 2017 Filed Dec 13, 2017 22:17 UTC REGENERON PHARMACEUTICALS, INC. REGN · Entity 2010 Tax withholdingCommon Stock 121,586 $385.08 $46,820,336.88
Disclosure

SEC source: 0001237899-17-000033 · edgardoc.xml · nonDerivative · entry 3

SCHLEIFER LEONARD S · CIK 0001218629 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 271,593

F1 · kind: Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c).

Read SEC document
December 13, 2017 Filed Dec 13, 2017 22:17 UTC REGENERON PHARMACEUTICALS, INC. REGN · Entity 2010 Tax withholdingCommon Stock 14,230 $385.08 $5,479,688.40
Disclosure

SEC source: 0001237899-17-000033 · edgardoc.xml · nonDerivative · entry 2

SCHLEIFER LEONARD S · CIK 0001218629 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 393,179

F1 · kind: Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c).

Read SEC document
December 13, 2017 Filed Dec 13, 2017 22:17 UTC REGENERON PHARMACEUTICALS, INC. REGN · Entity 2010 Exercise / conversionCommon Stock 250,000 $21.92 $5,480,000.00
Disclosure

SEC source: 0001237899-17-000033 · edgardoc.xml · nonDerivative · entry 1

SCHLEIFER LEONARD S · CIK 0001218629 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 407,409

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: Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c).

Read SEC document
December 12, 2017 Filed Dec 13, 2017 22:17 UTC REGENERON PHARMACEUTICALS, INC. REGN · Entity 2010 GrantNon-Qualified Stock Option (right to buy) · Derivative 139,474 $0.00 Strike: $378.98 $0.00
Disclosure

SEC source: 0001237899-17-000033 · edgardoc.xml · derivative · entry 6

SCHLEIFER LEONARD S · CIK 0001218629 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 139,474

Underlying: Common Stock · 139,474 shares

Expires 2027-12-12

F2 · derivative.exercise_date: The stock option award vests in four equal annual installments, commencing one year after the date of grant.

Read SEC document
December 16, 2016 Filed Dec 19, 2016 21:07 UTC REGENERON PHARMACEUTICALS, INC. REGN · Entity 2010 GrantNon-Qualified Stock Option (right to buy) · Derivative 146,815 $0.00 Strike: $381.92 $0.00
Disclosure

SEC source: 0001237899-16-000086 · edgardoc.xml · derivative · entry 6

SCHLEIFER LEONARD S · CIK 0001218629 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 146,815

Underlying: Common Stock · 146,815 shares

Expires 2026-12-16

F2 · derivative.exercise_date: The stock option award vests in four equal annual installments, commencing one year after the date of grant.

Read SEC document
December 15, 2016 Filed Dec 19, 2016 21:07 UTC REGENERON PHARMACEUTICALS, INC. REGN · Entity 2010 Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative 250,000 $0.00 Strike: $20.32 $0.00
Disclosure

SEC source: 0001237899-16-000086 · edgardoc.xml · derivative · entry 5

SCHLEIFER LEONARD S · CIK 0001218629 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 250,000 shares

Expires 2016-12-18

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: Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c).

F2 · derivative.exercise_date: The stock option award vests in four equal annual installments, commencing one year after the date of grant.

Read SEC document
December 15, 2016 Filed Dec 19, 2016 21:07 UTC REGENERON PHARMACEUTICALS, INC. REGN · Entity 2010 Tax withholdingCommon Stock 122,032 $380.09 $46,383,142.88
Disclosure

SEC source: 0001237899-16-000086 · edgardoc.xml · nonDerivative · entry 3

SCHLEIFER LEONARD S · CIK 0001218629 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 157,409

F1 · kind: Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c).

Read SEC document
December 15, 2016 Filed Dec 19, 2016 21:07 UTC REGENERON PHARMACEUTICALS, INC. REGN · Entity 2010 Tax withholdingCommon Stock 13,365 $380.09 $5,079,902.85
Disclosure

SEC source: 0001237899-16-000086 · edgardoc.xml · nonDerivative · entry 2

SCHLEIFER LEONARD S · CIK 0001218629 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 279,441

F1 · kind: Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c).

Read SEC document
December 15, 2016 Filed Dec 19, 2016 21:07 UTC REGENERON PHARMACEUTICALS, INC. REGN · Entity 2010 Exercise / conversionCommon Stock 250,000 $20.32 $5,080,000.00
Disclosure

SEC source: 0001237899-16-000086 · edgardoc.xml · nonDerivative · entry 1

SCHLEIFER LEONARD S · CIK 0001218629 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 292,806

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: Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c).

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.