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Nasdaq · USD

IONS

IONIS PHARMACEUTICALS INC

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Tapewire entity
1182
SEC CIK
0000874015
Parsed reports
834

Last 12 months

Inside the activity.

2 purchase rows · 116 sale rows

Disclosed non-derivative P/S rows, by transaction month. Includes amendments and private transactions.
Monthly counts
MonthPurchasesSales
Nov 2025015
Dec 202502
Jan 2026029
Feb 202607
Mar 2026031
Apr 202609
May 202606
Jun 2026011
Jul 202626
Aug 202600
Sep 202600
Oct 202600

Latest available

Insider transactions

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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 dateOwner / reported roleActivity / securityShares / unitsReported priceReported valueDetails
September 12, 2025 Filed Sep 16, 2025 20:56 UTC
O'NEIL PATRICK R.EVP CLO & General Counsel
SaleCommon Stock 1,700 $64.58 $109,787.19
Disclosure

SEC source: 0000874015-25-000234 · edgardoc.xml · nonDerivative · entry 2

O'NEIL PATRICK R. · CIK 0001564926 · EVP CLO & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 57,130

F1 · shares: Shares sold pursuant to a Rule 10b5-1 Trading Plan adopted by the reporting person on May 2, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $64.53 to $64.605 inclusive. The reporting person undertakes to provide to Ionis Pharmaceuticals, Inc. any security holder of Ionis Pharmaceuticals, Inc. 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 ranges set forth in footnote (2) on this Form 4.

Read SEC document
September 12, 2025 Filed Sep 16, 2025 20:56 UTC
O'NEIL PATRICK R.EVP CLO & General Counsel
Exercise / conversionCommon Stock 1,700 $56.78 $96,526.00
Disclosure

SEC source: 0000874015-25-000234 · edgardoc.xml · nonDerivative · entry 1

O'NEIL PATRICK R. · CIK 0001564926 · EVP CLO & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 58,830

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
September 09, 2025 Filed Sep 11, 2025 21:05 UTC
Baroldi JosephEVP, Chief Business Officer
Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative 11,950 $0.00 Strike: $31.80 $0.00
Disclosure

SEC source: 0000874015-25-000232 · edgardoc.xml · derivative · entry 4

Baroldi Joseph · CIK 0001813775 · EVP, Chief Business Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 41,700

Underlying: Common Stock · 11,950 shares

Expires 2032-01-30

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
September 09, 2025 Filed Sep 11, 2025 21:05 UTC
Baroldi JosephEVP, Chief Business Officer
SaleCommon Stock 11,950 $62.16 $742,838.29
Disclosure

SEC source: 0000874015-25-000232 · edgardoc.xml · nonDerivative · entry 2

Baroldi Joseph · CIK 0001813775 · EVP, Chief Business Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 31,926

F1 · shares: Shares sold pursuant to a Rule 10b5-1 Trading Plan adopted by the reporting person on May 2, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $62.00 to $62.44 inclusive. The reporting person undertakes to provide to Ionis Pharmaceuticals, Inc. any security holder of Ionis Pharmaceuticals, Inc. 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 ranges set forth in footnote (2) on this Form 4.

Read SEC document
September 09, 2025 Filed Sep 11, 2025 21:05 UTC
Baroldi JosephEVP, Chief Business Officer
Exercise / conversionCommon Stock 11,950 $31.80 $380,010.00
Disclosure

SEC source: 0000874015-25-000232 · edgardoc.xml · nonDerivative · entry 1

Baroldi Joseph · CIK 0001813775 · EVP, Chief Business Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 43,876

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
September 09, 2025 Filed Sep 11, 2025 21:04 UTC
O'NEIL PATRICK R.EVP CLO & General Counsel
Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative 20,000 $0.00 Strike: $60.89 $0.00
Disclosure

SEC source: 0000874015-25-000231 · edgardoc.xml · derivative · entry 6

O'NEIL PATRICK R. · CIK 0001564926 · EVP CLO & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 34,461

Underlying: Common Stock · 20,000 shares

Expires 2027-01-01

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.

Read SEC document
September 09, 2025 Filed Sep 11, 2025 21:04 UTC
O'NEIL PATRICK R.EVP CLO & General Counsel
Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative 1,000 $0.00 Strike: $56.78 $0.00
Disclosure

SEC source: 0000874015-25-000231 · edgardoc.xml · derivative · entry 5

O'NEIL PATRICK R. · CIK 0001564926 · EVP CLO & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 57,203

Underlying: Common Stock · 1,000 shares

Expires 2028-01-03

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
September 09, 2025 Filed Sep 11, 2025 21:04 UTC
O'NEIL PATRICK R.EVP CLO & General Counsel
SaleCommon Stock 1,000 $64.56 $64,555.30
Disclosure

SEC source: 0000874015-25-000231 · edgardoc.xml · nonDerivative · entry 4

O'NEIL PATRICK R. · CIK 0001564926 · EVP CLO & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 57,130

F1 · shares: Shares sold pursuant to a Rule 10b5-1 Trading Plan adopted by the reporting person on May 2, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $64.50 to $64.66 inclusive. The reporting person undertakes to provide to Ionis Pharmaceuticals, Inc. any security holder of Ionis Pharmaceuticals, Inc. 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 ranges set forth in footnote (2) on this Form 4.

Read SEC document
September 09, 2025 Filed Sep 11, 2025 21:04 UTC
O'NEIL PATRICK R.EVP CLO & General Counsel
Exercise / conversionCommon Stock 1,000 $56.78 $56,780.00
Disclosure

SEC source: 0000874015-25-000231 · edgardoc.xml · nonDerivative · entry 3

O'NEIL PATRICK R. · CIK 0001564926 · EVP CLO & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 58,130

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
September 09, 2025 Filed Sep 11, 2025 21:04 UTC
O'NEIL PATRICK R.EVP CLO & General Counsel
SaleCommon Stock 20,000 $64.56 $1,291,106.00
Disclosure

SEC source: 0000874015-25-000231 · edgardoc.xml · nonDerivative · entry 2

O'NEIL PATRICK R. · CIK 0001564926 · EVP CLO & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 57,130

F1 · shares: Shares sold pursuant to a Rule 10b5-1 Trading Plan adopted by the reporting person on May 2, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $64.50 to $64.66 inclusive. The reporting person undertakes to provide to Ionis Pharmaceuticals, Inc. any security holder of Ionis Pharmaceuticals, Inc. 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 ranges set forth in footnote (2) on this Form 4.

Read SEC document
September 09, 2025 Filed Sep 11, 2025 21:04 UTC
O'NEIL PATRICK R.EVP CLO & General Counsel
Exercise / conversionCommon Stock 20,000 $60.89 $1,217,800.00
Disclosure

SEC source: 0000874015-25-000231 · edgardoc.xml · nonDerivative · entry 1

O'NEIL PATRICK R. · CIK 0001564926 · EVP CLO & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 77,130

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
September 05, 2025 Filed Sep 9, 2025 22:30 UTC
Baroldi JosephEVP, Chief Business Officer
Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative 250 $0.00 Strike: $31.80 $0.00
Disclosure

SEC source: 0000874015-25-000228 · edgardoc.xml · derivative · entry 4

Baroldi Joseph · CIK 0001813775 · EVP, Chief Business Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 53,650

Underlying: Common Stock · 250 shares

Expires 2032-01-30

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
September 05, 2025 Filed Sep 9, 2025 22:30 UTC
Baroldi JosephEVP, Chief Business Officer
SaleCommon Stock 250 $62.00 $15,500.00
Disclosure

SEC source: 0000874015-25-000228 · edgardoc.xml · nonDerivative · entry 2

Baroldi Joseph · CIK 0001813775 · EVP, Chief Business Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 31,926

F1 · shares: Shares sold pursuant to a Rule 10b5-1 Trading Plan adopted by the reporting person on May 2, 2025.

Read SEC document
September 05, 2025 Filed Sep 9, 2025 22:30 UTC
Baroldi JosephEVP, Chief Business Officer
Exercise / conversionCommon Stock 250 $31.80 $7,950.00
Disclosure

SEC source: 0000874015-25-000228 · edgardoc.xml · nonDerivative · entry 1

Baroldi Joseph · CIK 0001813775 · EVP, Chief Business Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 32,176

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
September 05, 2025 Filed Sep 9, 2025 22:30 UTC
BENNETT C FRANKEVP, Chief Scientific Officer
SaleCommon Stock 6,000 $59.60 $357,580.80
Disclosure

SEC source: 0000874015-25-000227 · edgardoc.xml · nonDerivative · entry 1

BENNETT C FRANK · CIK 0001073387 · EVP, Chief Scientific Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 82,679

F1 · shares: Shares sold pursuant to a Rule 10b5-1 Trading Plan adopted by the reporting person on May 13, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $59.25 to $59.86 inclusive. The reporting person undertakes to provide to Ionis Pharmaceuticals, Inc. any security holder of Ionis Pharmaceuticals, Inc. 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 ranges set forth in footnote (2) on this Form 4.

Read SEC document
September 03, 2025 Filed Sep 5, 2025 00:40 UTC SaleCommon Stock 11,200 $60.14 $673,548.96
Disclosure

SEC source: 0000874015-25-000223 · edgardoc.xml · nonDerivative · entry 3

WENDER JOSEPH H · CIK 0001073384 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 108,835

F1 · shares: Shares sold pursuant to a Rule 10b5-1 Trading Plan adopted by the reporting person on December 16, 2024.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $60.00 to $60.53 inclusive. The reporting person undertakes to provide to Ionis Pharmaceuticals, Inc. any security holder of Ionis Pharmaceuticals, Inc. 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 ranges set forth in footnote (4) on this Form 4.

Read SEC document
September 03, 2025 Filed Sep 5, 2025 00:37 UTC Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative 16,000 $0.00 Strike: $52.22 $0.00
Disclosure

SEC source: 0000874015-25-000219 · edgardoc.xml · derivative · entry 7

KLEIN JOSEPH III · CIK 0001206369 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 0

Underlying: Common Stock · 16,000 shares

Expires 2027-07-02

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
September 03, 2025 Filed Sep 5, 2025 00:37 UTC Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative 12,000 $0.00 Strike: $42.88 $0.00
Disclosure

SEC source: 0000874015-25-000219 · edgardoc.xml · derivative · entry 6

KLEIN JOSEPH III · CIK 0001206369 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 0

Underlying: Common Stock · 12,000 shares

Expires 2028-07-01

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.

Read SEC document
September 03, 2025 Filed Sep 5, 2025 00:37 UTC SaleCommon Stock 28,000 $60.00 $1,680,000.00
Disclosure

SEC source: 0000874015-25-000219 · edgardoc.xml · nonDerivative · entry 3

KLEIN JOSEPH III · CIK 0001206369 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 0

F1 · shares: Shares sold pursuant to a Rule 10b5-1 Trading Plan adopted by the reporting person on January 3, 2024

Read SEC document
September 03, 2025 Filed Sep 5, 2025 00:37 UTC Exercise / conversionCommon Stock 12,000 $0.00 $0.00
Disclosure

SEC source: 0000874015-25-000219 · edgardoc.xml · nonDerivative · entry 2

KLEIN JOSEPH III · CIK 0001206369 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 28,000

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.

Read SEC document
September 03, 2025 Filed Sep 5, 2025 00:37 UTC Exercise / conversionCommon Stock 16,000 $0.00 $0.00
Disclosure

SEC source: 0000874015-25-000219 · edgardoc.xml · nonDerivative · entry 1

KLEIN JOSEPH III · CIK 0001206369 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 16,000

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.

Read SEC document
September 03, 2025 Filed Sep 5, 2025 00:38 UTC
Monia Brett PDirector · Chief Executive Officer
Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative 102,900 $0.00 Strike: $53.77 $0.00
Disclosure

SEC source: 0000874015-25-000221 · edgardoc.xml · derivative · entry 11

Monia Brett P · CIK 0001537529 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 102,900 shares

Expires 2026-01-01

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.

Read SEC document
September 03, 2025 Filed Sep 5, 2025 00:38 UTC
Monia Brett PDirector · Chief Executive Officer
Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative 42,030 $0.00 Strike: $37.58 $0.00
Disclosure

SEC source: 0000874015-25-000221 · edgardoc.xml · derivative · entry 10

Monia Brett P · CIK 0001537529 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 76,643

Underlying: Common Stock · 42,030 shares

Expires 2033-01-02

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
September 03, 2025 Filed Sep 5, 2025 00:38 UTC
Monia Brett PDirector · Chief Executive Officer
Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative 27,568 $0.00 Strike: $32.60 $0.00
Disclosure

SEC source: 0000874015-25-000221 · edgardoc.xml · derivative · entry 9

Monia Brett P · CIK 0001537529 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,173

Underlying: Common Stock · 27,568 shares

Expires 2032-01-02

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
September 03, 2025 Filed Sep 5, 2025 00:38 UTC
Monia Brett PDirector · Chief Executive Officer
Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative 31,316 $0.00 Strike: $32.60 $0.00
Disclosure

SEC source: 0000874015-25-000221 · edgardoc.xml · derivative · entry 8

Monia Brett P · CIK 0001537529 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 67,741

Underlying: Common Stock · 31,316 shares

Expires 2032-01-02

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
September 03, 2025 Filed Sep 5, 2025 00:38 UTC
Monia Brett PDirector · Chief Executive Officer
SaleCommon Stock 59,699 $61.06 $3,645,394.07
Disclosure

SEC source: 0000874015-25-000221 · edgardoc.xml · nonDerivative · entry 7

Monia Brett P · CIK 0001537529 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 180,009

F1 · shares: Shares sold pursuant to a Rule 10b5-1 Trading Plan adopted by the reporting person on August 13, 2024.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $60.61 to $61.48 inclusive. The reporting person undertakes to provide to Ionis Pharmaceuticals, Inc. any security holder of Ionis Pharmaceuticals, Inc. 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 ranges set forth in footnote (4) on this Form 4.

Read SEC document
September 03, 2025 Filed Sep 5, 2025 00:38 UTC
Monia Brett PDirector · Chief Executive Officer
Exercise / conversionCommon Stock 27,568 $32.60 $898,716.80
Disclosure

SEC source: 0000874015-25-000221 · edgardoc.xml · nonDerivative · entry 6

Monia Brett P · CIK 0001537529 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 239,708

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.

Read SEC document
September 03, 2025 Filed Sep 5, 2025 00:38 UTC
Monia Brett PDirector · Chief Executive Officer
Exercise / conversionCommon Stock 31,316 $32.60 $1,020,901.60
Disclosure

SEC source: 0000874015-25-000221 · edgardoc.xml · nonDerivative · entry 5

Monia Brett P · CIK 0001537529 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 212,140

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
September 03, 2025 Filed Sep 5, 2025 00:38 UTC
Monia Brett PDirector · Chief Executive Officer
SaleCommon Stock 127,500 $60.13 $7,667,046.75
Disclosure

SEC source: 0000874015-25-000221 · edgardoc.xml · nonDerivative · entry 4

Monia Brett P · CIK 0001537529 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 180,824

F1 · shares: Shares sold pursuant to a Rule 10b5-1 Trading Plan adopted by the reporting person on August 13, 2024.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $59.60 to $60.57 inclusive. The reporting person undertakes to provide to Ionis Pharmaceuticals, Inc. any security holder of Ionis Pharmaceuticals, Inc. 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 ranges set forth in footnote (3) on this Form 4.

Read SEC document
September 03, 2025 Filed Sep 5, 2025 00:38 UTC
Monia Brett PDirector · Chief Executive Officer
Exercise / conversionCommon Stock 42,030 $37.58 $1,579,487.40
Disclosure

SEC source: 0000874015-25-000221 · edgardoc.xml · nonDerivative · entry 3

Monia Brett P · CIK 0001537529 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 308,324

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
September 03, 2025 Filed Sep 5, 2025 00:38 UTC
Monia Brett PDirector · Chief Executive Officer
SaleCommon Stock 16,615 $59.12 $982,262.19
Disclosure

SEC source: 0000874015-25-000221 · edgardoc.xml · nonDerivative · entry 2

Monia Brett P · CIK 0001537529 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 266,294

F1 · shares: Shares sold pursuant to a Rule 10b5-1 Trading Plan adopted by the reporting person on August 13, 2024.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $58.57 to $59.55 inclusive. The reporting person undertakes to provide to Ionis Pharmaceuticals, Inc. any security holder of Ionis Pharmaceuticals, Inc. 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 ranges set forth in footnote (2) on this Form 4.

Read SEC document
September 03, 2025 Filed Sep 5, 2025 00:38 UTC
Monia Brett PDirector · Chief Executive Officer
Exercise / conversionCommon Stock 102,900 $53.77 $5,532,933.00
Disclosure

SEC source: 0000874015-25-000221 · edgardoc.xml · nonDerivative · entry 1

Monia Brett P · CIK 0001537529 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 282,909

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
September 03, 2025 Filed Sep 5, 2025 00:38 UTC Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative 16,000 $0.00 Strike: $52.22 $0.00
Disclosure

SEC source: 0000874015-25-000220 · edgardoc.xml · derivative · entry 7

KLEIN JOSEPH III · CIK 0001206369 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 0

Underlying: Common Stock · 16,000 shares

Expires 2027-07-02

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
September 03, 2025 Filed Sep 5, 2025 00:38 UTC Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative 12,000 $0.00 Strike: $42.88 $0.00
Disclosure

SEC source: 0000874015-25-000220 · edgardoc.xml · derivative · entry 6

KLEIN JOSEPH III · CIK 0001206369 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 0

Underlying: Common Stock · 12,000 shares

Expires 2028-07-01

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.

Read SEC document
September 03, 2025 Filed Sep 5, 2025 00:38 UTC SaleCommon Stock 28,000 $60.00 $1,680,000.00
Disclosure

SEC source: 0000874015-25-000220 · edgardoc.xml · nonDerivative · entry 3

KLEIN JOSEPH III · CIK 0001206369 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 0

F1 · shares: Shares sold pursuant to a Rule 10b5-1 Trading Plan adopted by the reporting person on January 3, 2024

Read SEC document
September 03, 2025 Filed Sep 5, 2025 00:38 UTC Exercise / conversionCommon Stock 12,000 $0.00 $0.00
Disclosure

SEC source: 0000874015-25-000220 · edgardoc.xml · nonDerivative · entry 2

KLEIN JOSEPH III · CIK 0001206369 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 28,000

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.

Read SEC document
September 03, 2025 Filed Sep 5, 2025 00:38 UTC Exercise / conversionCommon Stock 16,000 $0.00 $0.00
Disclosure

SEC source: 0000874015-25-000220 · edgardoc.xml · nonDerivative · entry 1

KLEIN JOSEPH III · CIK 0001206369 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 16,000

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.

Read SEC document
September 03, 2025 Filed Sep 5, 2025 00:36 UTC
Devers Shannon L.EVP, Chief Human Resources Ofc
Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative 2,234 $0.00 Strike: $37.58 $0.00
Disclosure

SEC source: 0000874015-25-000217 · edgardoc.xml · derivative · entry 5

Devers Shannon L. · CIK 0002037721 · EVP, Chief Human Resources Ofc

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 13,083

Underlying: Common Stock · 2,234 shares

Expires 2033-01-02

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
September 03, 2025 Filed Sep 5, 2025 00:36 UTC
Devers Shannon L.EVP, Chief Human Resources Ofc
Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative 928 $0.00 Strike: $32.60 $0.00
Disclosure

SEC source: 0000874015-25-000217 · edgardoc.xml · derivative · entry 4

Devers Shannon L. · CIK 0002037721 · EVP, Chief Human Resources Ofc

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 13,440

Underlying: Common Stock · 928 shares

Expires 2032-01-02

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.

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September 03, 2025 Filed Sep 5, 2025 00:36 UTC
Devers Shannon L.EVP, Chief Human Resources Ofc
Exercise / conversionCommon Stock 928 $32.60 $30,252.80
Disclosure

SEC source: 0000874015-25-000217 · edgardoc.xml · nonDerivative · entry 3

Devers Shannon L. · CIK 0002037721 · EVP, Chief Human Resources Ofc

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 15,937

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.

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September 03, 2025 Filed Sep 5, 2025 00:36 UTC
Devers Shannon L.EVP, Chief Human Resources Ofc
SaleCommon Stock 3,162 $61.02 $192,942.71
Disclosure

SEC source: 0000874015-25-000217 · edgardoc.xml · nonDerivative · entry 2

Devers Shannon L. · CIK 0002037721 · EVP, Chief Human Resources Ofc

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 15,009

F1 · shares: Shares sold pursuant to a Rule 10b5-1 Trading Plan adopted by the reporting person on September 3, 2024.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $61.0075 to $61.045 inclusive. The reporting person undertakes to provide to Ionis Pharmaceuticals, Inc. any security holder of Ionis Pharmaceuticals, Inc. 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 ranges set forth in footnote (2) on this Form 4.

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September 03, 2025 Filed Sep 5, 2025 00:36 UTC
Devers Shannon L.EVP, Chief Human Resources Ofc
Exercise / conversionCommon Stock 2,234 $37.58 $83,953.72
Disclosure

SEC source: 0000874015-25-000217 · edgardoc.xml · nonDerivative · entry 1

Devers Shannon L. · CIK 0002037721 · EVP, Chief Human Resources Ofc

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 18,171

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.

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September 03, 2025 Filed Sep 5, 2025 00:29 UTC
O'NEIL PATRICK R.EVP CLO & General Counsel
Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative 49,800 $0.00 Strike: $53.77 $0.00
Disclosure

SEC source: 0000874015-25-000214 · edgardoc.xml · derivative · entry 11

O'NEIL PATRICK R. · CIK 0001564926 · EVP CLO & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 49,800 shares

Expires 2026-01-01

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.

Read SEC document
September 03, 2025 Filed Sep 5, 2025 00:29 UTC
O'NEIL PATRICK R.EVP CLO & General Counsel
Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative 14,000 $0.00 Strike: $37.58 $0.00
Disclosure

SEC source: 0000874015-25-000214 · edgardoc.xml · derivative · entry 10

O'NEIL PATRICK R. · CIK 0001564926 · EVP CLO & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,942

Underlying: Common Stock · 14,000 shares

Expires 2033-01-02

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
September 03, 2025 Filed Sep 5, 2025 00:29 UTC
O'NEIL PATRICK R.EVP CLO & General Counsel
Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative 13,050 $0.00 Strike: $32.60 $0.00
Disclosure

SEC source: 0000874015-25-000214 · edgardoc.xml · derivative · entry 9

O'NEIL PATRICK R. · CIK 0001564926 · EVP CLO & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,467

Underlying: Common Stock · 13,050 shares

Expires 2032-01-02

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
September 03, 2025 Filed Sep 5, 2025 00:29 UTC
O'NEIL PATRICK R.EVP CLO & General Counsel
Exercise / conversionCommon Stock 49,800 $53.77 $2,677,746.00
Disclosure

SEC source: 0000874015-25-000214 · edgardoc.xml · nonDerivative · entry 7

O'NEIL PATRICK R. · CIK 0001564926 · EVP CLO & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 57,130

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
September 03, 2025 Filed Sep 5, 2025 00:29 UTC
O'NEIL PATRICK R.EVP CLO & General Counsel
SaleCommon Stock 11,375 $61.42 $698,652.50
Disclosure

SEC source: 0000874015-25-000214 · edgardoc.xml · nonDerivative · entry 6

O'NEIL PATRICK R. · CIK 0001564926 · EVP CLO & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 7,330

F3 · shares: Shares sold pursuant to a Rule 10b5-1 Trading Plan adopted by the reporting person on May 2, 2025.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $61.35 to $61.48 inclusive. The reporting person undertakes to provide to Ionis Pharmaceuticals, Inc. any security holder of Ionis Pharmaceuticals, Inc. 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 ranges set forth in footnote (5)on this Form 4.

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September 03, 2025 Filed Sep 5, 2025 00:29 UTC
O'NEIL PATRICK R.EVP CLO & General Counsel
Exercise / conversionCommon Stock 13,050 $32.60 $425,430.00
Disclosure

SEC source: 0000874015-25-000214 · edgardoc.xml · nonDerivative · entry 5

O'NEIL PATRICK R. · CIK 0001564926 · EVP CLO & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 18,705

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
September 03, 2025 Filed Sep 5, 2025 00:29 UTC
O'NEIL PATRICK R.EVP CLO & General Counsel
SaleCommon Stock 65,475 $60.89 $3,986,772.75
Disclosure

SEC source: 0000874015-25-000214 · edgardoc.xml · nonDerivative · entry 4

O'NEIL PATRICK R. · CIK 0001564926 · EVP CLO & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 5,655

F3 · shares: Shares sold pursuant to a Rule 10b5-1 Trading Plan adopted by the reporting person on May 2, 2025.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $60.3418 to $61.34 inclusive. The reporting person undertakes to provide to Ionis Pharmaceuticals, Inc. any security holder of Ionis Pharmaceuticals, Inc. 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 ranges set forth in footnote (4) on this Form 4.

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September 03, 2025 Filed Sep 5, 2025 00:29 UTC
O'NEIL PATRICK R.EVP CLO & General Counsel
Exercise / conversionCommon Stock 14,000 $37.58 $526,120.00
Disclosure

SEC source: 0000874015-25-000214 · edgardoc.xml · nonDerivative · entry 3

O'NEIL PATRICK R. · CIK 0001564926 · EVP CLO & General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 71,130

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.