Understand Stock

$IONS

$64.40 +$7.65 (13.48%)

Deep Research with AI Research

Overview

$IONS Overview Financials SEC Filings Executives News

Specialized Tools

Valuations P Insider Transactions P Congressional Trades P

Insider Transactions

Insider Transaction Summary

Brett P Monia

245,882 shares

Net: +411,767 B/S: 3.23

SPENCER R BERTHELSEN

164,013 shares

Net: +4,079 B/S: 1.51

C FRANK BENNETT

117,017 shares

Net: +38,618 B/S: 1.24

ELIZABETH L HOUGEN

82,660 shares

Net: -72,970 B/S: 0.74

Richard S Geary

74,395 shares

Net: -19,835 B/S: 0.85

Brian Birchler

67,500 shares

Net: +55,990 B/S: 2.18

Eugene Schneider

63,890 shares

Net: +55,187 B/S: 2.27

PATRICK R. O'NEIL

62,211 shares

Net: +2,328 B/S: 1.01

JOAN E HERMAN

58,086 shares

Net: +4,079 B/S: 1.34

FREDERICK T MUTO

56,932 shares

Net: 0 B/S: -

Michael R Hayden

54,298 shares

Net: +4,079 B/S: ∞

B LYNNE PARSHALL

51,878 shares

Net: -25,737 B/S: 0.14

JOSEPH LOSCALZO

47,298 shares

Net: -44,461 B/S: 0.52

Joseph Baroldi

44,909 shares

Net: +58,953 B/S: 2.06

JOSEPH H WENDER

43,464 shares

Net: -53,376 B/S: 0.27

Onaiza Cadoret-Manier

35,788 shares

Net: 0 B/S: -

Eric Swayze

32,361 shares

Net: +36,488 B/S: 1.49

Allene M. Diaz

28,689 shares

Net: -26,292 B/S: 0.35

Kyle Jenne

23,713 shares

Net: +69,075 B/S: 3.47

JOSEPH III KLEIN

21,125 shares

Net: -20,200 B/S: 0.73

Breaux Castleman

19,183 shares

Net: 0 B/S: -

Shannon L. Devers

16,348 shares

Net: +31,002 B/S: 1.36

Holly B. Kordasiewicz

14,718 shares

Net: +37,228 B/S: 9.99

Peter N Reikes

10,753 shares

Net: +10,753 B/S: ∞

LUDWIG HANTSON

10,753 shares

Net: +10,753 B/S: ∞

Sarah Boyce

8,931 shares

Net: 0 B/S: -

MICHAEL J. YANG

7,940 shares

Net: +6,009 B/S: ∞

Damien McDevitt

2,573 shares

Net: 0 B/S: -

STANLEY T CROOKE

2,021 shares

Net: 0 B/S: -

Insider Name	Current Shares	Net Change (1yr)	Buy/Sell Ratio
Brett P Monia	245,882	+411,767	3.23
SPENCER R BERTHELSEN	164,013	+4,079	1.51
C FRANK BENNETT	117,017	+38,618	1.24
ELIZABETH L HOUGEN	82,660	-72,970	0.74
Richard S Geary	74,395	-19,835	0.85
Brian Birchler	67,500	+55,990	2.18
Eugene Schneider	63,890	+55,187	2.27
PATRICK R. O'NEIL	62,211	+2,328	1.01
JOAN E HERMAN	58,086	+4,079	1.34
FREDERICK T MUTO	56,932	0	-
Michael R Hayden	54,298	+4,079	∞
B LYNNE PARSHALL	51,878	-25,737	0.14
JOSEPH LOSCALZO	47,298	-44,461	0.52
Joseph Baroldi	44,909	+58,953	2.06
JOSEPH H WENDER	43,464	-53,376	0.27
Onaiza Cadoret-Manier	35,788	0	-
Eric Swayze	32,361	+36,488	1.49
Allene M. Diaz	28,689	-26,292	0.35
Kyle Jenne	23,713	+69,075	3.47
JOSEPH III KLEIN	21,125	-20,200	0.73
Breaux Castleman	19,183	0	-
Shannon L. Devers	16,348	+31,002	1.36
Holly B. Kordasiewicz	14,718	+37,228	9.99
Peter N Reikes	10,753	+10,753	∞
LUDWIG HANTSON	10,753	+10,753	∞
Sarah Boyce	8,931	0	-
MICHAEL J. YANG	7,940	+6,009	∞
Damien McDevitt	2,573	0	-
STANLEY T CROOKE	2,021	0	-

Individual Transactions

June 04, 2026

LUDWIG HANTSON

Grant/Award Acquisition

Change: +10,753

Price: $0.00

Shares: 10,753

Value: +$0

Peter N Reikes

Grant/Award Acquisition

Change: +10,753

Price: $0.00

Shares: 10,753

Value: +$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
LUDWIG HANTSON	Jun 08	Grant/Award Acquisition (A) Compensation/Award	10,753	+10,753	$0.00	+$0
Peter N Reikes	Jun 08	Grant/Award Acquisition (A) Compensation/Award	10,753	+10,753	$0.00	+$0

June 01, 2026

SPENCER R BERTHELSEN

Open Market Sale

Change: -8,000

Price: $75.67

Shares: 156,013

Value: -$605,360

SPENCER R BERTHELSEN

Option Exercise/Conversion

Change: +8,000

Price: $24.42

Shares: 164,013

Value: +$195,360

Insider	Filing Date	Transaction	Shares	Change	Price	Value
SPENCER R BERTHELSEN	Jun 03	Open Market Sale (S) Market Sale	156,013	-8,000	$75.67	-$605,360
SPENCER R BERTHELSEN	Jun 03	Option Exercise/Conversion (M) Compensation/Award	164,013	+8,000	$24.42	+$195,360

May 14, 2026

Brett P Monia

Open Market Sale

Change: -3,220

Price: $78.68

Shares: 242,662

Value: -$253,347

Brett P Monia

Option Exercise/Conversion

Change: +3,220

Price: $32.60

Shares: 245,882

Value: +$104,972

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Brett P Monia	May 15	Open Market Sale (S) Market Sale	242,662	-3,220	$78.68	-$253,347
Brett P Monia	May 15	Option Exercise/Conversion (M) Compensation/Award	245,882	+3,220	$32.60	+$104,972

May 13, 2026

Brett P Monia

Open Market Sale

Change: -1,316

Price: $78.01

Shares: 242,662

Value: -$102,665

Brett P Monia

Option Exercise/Conversion

Change: +1,316

Price: $32.60

Shares: 243,978

Value: +$42,901

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Brett P Monia	May 15	Open Market Sale (S) Market Sale	242,662	-1,316	$78.01	-$102,665
Brett P Monia	May 15	Option Exercise/Conversion (M) Compensation/Award	243,978	+1,316	$32.60	+$42,901

May 04, 2026

JOSEPH LOSCALZO

Open Market Sale

Change: -59,508

Price: $74.90

Shares: 54,111

Value: -$4,457,292

JOSEPH LOSCALZO

Option Exercise/Conversion

Change: +10,968

Price: $38.06

Shares: 47,298

Value: +$417,442

Insider	Filing Date	Transaction	Shares	Change	Price	Value
JOSEPH LOSCALZO	May 06	Open Market Sale (S) Market Sale	54,111	-59,508	$74.90	-$4,457,292
JOSEPH LOSCALZO	May 06	Option Exercise/Conversion (M) Compensation/Award	47,298	+10,968	$38.06	+$417,442

May 01, 2026

JOSEPH III KLEIN

Open Market Sale

Change: -8,680

Price: $73.35

Shares: 12,445

Value: -$636,704

JOSEPH III KLEIN

Option Exercise/Conversion

Change: +10,111

Price: $47.11

Shares: 21,125

Value: +$476,329

Insider	Filing Date	Transaction	Shares	Change	Price	Value
JOSEPH III KLEIN	May 05	Open Market Sale (S) Market Sale	12,445	-8,680	$73.35	-$636,704
JOSEPH III KLEIN	May 05	Option Exercise/Conversion (M) Compensation/Award	21,125	+10,111	$47.11	+$476,329

April 28, 2026

Joseph Baroldi

Open Market Sale

Change: -1,626

Price: $71.79

Shares: 44,909

Value: -$116,726

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Joseph Baroldi	Apr 30	Open Market Sale (S) Market Sale	44,909	-1,626	$71.79	-$116,726

April 16, 2026

Kyle Jenne

Open Market Sale

Change: -4,902

Price: $75.17

Shares: 23,713

Value: -$368,488

Joseph Baroldi

Open Market Sale

Change: -5,619

Price: $74.56

Shares: 46,535

Value: -$418,952

Brian Birchler

Open Market Sale

Change: -973

Price: $75.04

Shares: 67,500

Value: -$73,015

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Kyle Jenne	Apr 17	Open Market Sale (S) Market Sale	23,713	-4,902	$75.17	-$368,488
Joseph Baroldi	Apr 17	Open Market Sale (S) Market Sale	46,535	-5,619	$74.56	-$418,952
Brian Birchler	Apr 17	Open Market Sale (S) Market Sale	67,500	-973	$75.04	-$73,015

April 15, 2026

B LYNNE PARSHALL

Open Market Sale

Change: -4,466

Price: $76.19

Shares: 51,878

Value: -$340,264

Kyle Jenne

Option Exercise/Conversion

Change: +12,226

Price: $0.00

Shares: 28,615

Value: +$0

Joseph Baroldi

Option Exercise/Conversion

Change: +10,837

Price: $0.00

Shares: 52,154

Value: +$0

Brian Birchler

Option Exercise/Conversion

Change: +1,875

Price: $0.00

Shares: 68,473

Value: +$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
B LYNNE PARSHALL	Apr 17	Open Market Sale (S) Market Sale	51,878	-4,466	$76.19	-$340,264
Kyle Jenne	Apr 17	Option Exercise/Conversion (M) Compensation/Award	28,615	+12,226	$0.00	+$0
Joseph Baroldi	Apr 17	Option Exercise/Conversion (M) Compensation/Award	52,154	+10,837	$0.00	+$0
Brian Birchler	Apr 17	Option Exercise/Conversion (M) Compensation/Award	68,473	+1,875	$0.00	+$0