Ionis Pharmaceuticals (IONS): Congress and insider trades
Who in Congress and inside the company traded IONS, when each filing appeared, and what buying after each one would have earned against the S&P 500.
Key Facts
- Ionis Pharmaceuticals (IONS) is a listed stock on NASDAQ.
- 2 members of Congress filed 2 buys and 2 sells of IONS, the latest published 2023-04-17 (17 April 2023).
- Insiders filed 2 open market buys worth $1.1M and 27 sells worth $46M, the latest filed 2026-07-31 (31 July 2026).
- Across 2 scored buys, Congress averaged -5.8% against the S&P 500 (SPY) over the 90 days after disclosure, with 50% of them ahead of the index. That result is too few trades to draw a conclusion.
- Data as of 2026-09-29 (29 September 2026).
Congress trades in IONS
as of 2023-04-17| Filed | Member | Type | Size | Days to file | 90 day vs S&P |
|---|---|---|---|---|---|
| 17 Apr 2023 | Daniel S. Goldman (D-NY) | sell | 1K–15K | 42 | n/a |
| 12 Apr 2023 | Ro Khanna (D-CA) | sell | 1K–15K | 24 | n/a |
| 4 Jan 2023 | Ro Khanna (D-CA) | buy | 1K–15K | 28 | -16.6% |
| 15 Oct 2021 | Ro Khanna (D-CA) | buy | 1K–15K | 16 | +5.1% |
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Insider trades in IONS
as of 2026-07-31| Filed | Insider | Type | Shares | Price | Value | 90 day vs S&P |
|---|---|---|---|---|---|---|
| 31 Jul 2026 | Hayden Michael R | buy | 5,000 | $51.60 | $258K | n/a |
| 31 Jul 2026 | Hayden Michael R | buy | 15,000 | $53.38 | $801K | n/a |
| 9 Jul 2026 | BENNETT C FRANK | sell | 5,536 | $83.58 | $463K | n/a |
| 9 Jul 2026 | BENNETT C FRANK | sell | 15,000 | $85.46 | $1.3M | n/a |
| 9 Jul 2026 | Kordasiewicz Holly B. | sell | 362 | $84.30 | $30.5K | n/a |
| 9 Jul 2026 | Diaz Allene M. | sell | 10,111 | $85.42 | $864K | n/a |
| 6 Jul 2026 | KLEIN JOSEPH III | sell | 11,518 | $79.04 | $910K | n/a |
| 30 Jun 2026 | O'NEIL PATRICK R. | sell | 3,069 | $80.00 | $246K | n/a |
| 30 Jun 2026 | Schneider Eugene | sell | 26,000 | $81.05 | $2.1M | n/a |
| 30 Jun 2026 | Baroldi Joseph | sell | 5,635 | $80.16 | $452K | n/a |
| 26 Jun 2026 | Monia Brett P | sell | 50,000 | $80.59 | $4.0M | n/a |
| 26 Jun 2026 | Monia Brett P | sell | 21,072 | $78.49 | $1.7M | n/a |
| 26 Jun 2026 | Monia Brett P | sell | 14,565 | $78.41 | $1.1M | n/a |
| 26 Jun 2026 | Swayze Eric | sell | 10,602 | $79.18 | $839K | n/a |
| 16 Jun 2026 | BERTHELSEN SPENCER R | sell | 8,000 | $73.49 | $588K | n/a |
| 16 Jun 2026 | Kordasiewicz Holly B. | sell | 60,846 | $73.41 | $4.5M | n/a |
| 3 Jun 2026 | BERTHELSEN SPENCER R | sell | 8,000 | $75.67 | $605K | n/a |
| 6 May 2026 | LOSCALZO JOSEPH | sell | 77,289 | $75.06 | $5.8M | n/a |
| 5 May 2026 | KLEIN JOSEPH III | sell | 10,111 | $73.51 | $743K | n/a |
| 30 Apr 2026 | Baroldi Joseph | sell | 1,626 | $71.79 | $117K | n/a |
| 17 Apr 2026 | PARSHALL B LYNNE | sell | 5,000 | $76.27 | $381K | n/a |
| 17 Apr 2026 | Jenne Kyle | sell | 4,902 | $75.17 | $368K | n/a |
| 17 Apr 2026 | Birchler Brian | sell | 973 | $75.04 | $73.0K | n/a |
| 17 Apr 2026 | Baroldi Joseph | sell | 5,619 | $74.56 | $419K | n/a |
| 2 Apr 2026 | KLEIN JOSEPH III | sell | 22,321 | $75.55 | $1.7M | n/a |
| 2 Apr 2026 | Devers Shannon L. | sell | 6,193 | $74.05 | $459K | n/a |
| 23 Mar 2026 | Schneider Eugene | sell | 5,812 | $70.97 | $412K | n/a |
| 18 Mar 2026 | HOUGEN ELIZABETH L | sell | 10,172 | $73.21 | $745K | n/a |
| 18 Mar 2026 | HOUGEN ELIZABETH L | sell | 215,048 | $72.40 | $16M | n/a |
Nothing matches that search.
Related pages
Frequently asked questions
Who has bought IONS?
2 Congress buys by 2 members and 2 insider buys are on file. The tables on this page list every one.
Did buying IONS after a disclosure beat the market?
Across 2 scored buys, Congress averaged -5.8% against the S&P 500 (SPY) over the 90 days after disclosure, with 50% of them ahead of the index. That result is too few trades to draw a conclusion. A single stock is a small sample.
Sources: Congressional trades: STOCK Act disclosures, collected from CapitolTrades. Insider trades: SEC Form 4 filings, collected from Finviz. Prices: Yahoo Finance daily adjusted closes. Data as of 2026-09-29 (29 September 2026). About these sources.
Not investment advice. Past disclosed trades do not predict future returns. Disclosures are published late, so the trades shown are ones you could only have copied after the fact. Talk to a licensed adviser before you invest.