Icosavax, Inc.
Icosavax, Inc. (ICVX) Insider Trading
Form 4 buy vs sell counts, ratio, and sentiment — switch this quarter or last 12 months; chart and transactions below.
SEC EDGAR · FMP · ICVX · as of Jun 9, 2026
Activity summary
Buy transactions
0
P-Purchase only
Sell transactions
19
12 Months
Buy/Sell ratio
0.00
Buy/Sell (by trades)
Overall sentiment
Icosavax, Inc. insiders have been primarily selling shares over the past 12 Months. Selling activity is often driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment toward the company.
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · Buy = P-Purchase only · Sell = S-Sale only
As of Jun 9, 2026
ICVX insider buying and selling by quarter
ICVX insider selling · ICVX insider buying stocks · quarterly insider activity
Mobile shows last 4Q · Desktop shows full 8Q
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · last 8 quarters
As of Jun 9, 2026
Recent insider transactions
ICVX executive sell shares · ICVX board member insider trading · ICVX insider trading SEC filing
Scroll horizontally to see all columns
| Date | Insider | Type | Shares | Value | Filing |
|---|---|---|---|---|---|
| Feb 19, 2024 | RA CAPITAL MANAGEMENT, L.P. Director | Other | 638,668 | $9.58M⚡ | Form 4 |
| Feb 19, 2024 | Simpson Adam K. other: See Remarks | Other | 129,032 | $1.94M⚡ | Form 4 |
| Feb 19, 2024 | Veneman Ann M other: See Remarks | Other | 11,209 | $168K | Form 4 |
| Feb 19, 2024 | Veneman Ann M other: See Remarks | Other | 2,834 | — | Form 4 |
| Feb 19, 2024 | Cearley Cassia other: See Remarks | Other | 131,799 | $1.98M⚡ | Form 4 |
| Feb 19, 2024 | FIELDS HEIDI other: See Remarks | Other | 11,376 | $171K | Form 4 |
| Feb 19, 2024 | FIELDS HEIDI other: See Remarks | Other | 2,917 | — | Form 4 |
| Feb 19, 2024 | Wassil Jim other: See Remarks | Other | 7,392 | — | Form 4 |
| Feb 19, 2024 | Wassil Jim other: See Remarks | Other | 3,695 | $55K | Form 4 |
| Feb 19, 2024 | Russo Thomas Joseph other: See Remarks | Other | 39,367 | $591K | Form 4 |
| Feb 19, 2024 | Shiver John W. other: See Remarks | Other | 8,066 | $121K | Form 4 |
| Feb 19, 2024 | Shiver John W. other: See Remarks | Other | 2,833 | — | Form 4 |
| Feb 19, 2024 | MCDADE MARK other: See Remarks | Other | 3,510,228 | $52.65M⚡ | Form 4 |
| Feb 19, 2024 | Kanesa-thasan Niranjan other: See Remarks | Other | 223,980 | $3.36M⚡ | Form 4 |
| Feb 1, 2024 | Simpson Adam K. CEO · Director | Gift | 6,532 | — | Form 4 |
| Feb 1, 2024 | Simpson Adam K. CEO · Director | Option | 15,000 | $16K | Form 4 |
| Feb 1, 2024 | Simpson Adam K. CEO · Director | Sale | 15,000 | $229K | Form 4 |
| Jan 22, 2024 | Simpson Adam K. CEO · Director | Option | 93,227 | $97K | Form 4 |
| Jan 22, 2024 | Simpson Adam K. CEO · Director | Option | 4,789 | $4K | Form 4 |
| Jan 4, 2023 | Kanesa-thasan Niranjan Chief Medical Officer | Option | 5,972 | $90K | Form 4 |
| Jan 4, 2023 | Kanesa-thasan Niranjan Chief Medical Officer | Option | 11,947 | $70K | Form 4 |
| Jan 4, 2023 | Kanesa-thasan Niranjan Chief Medical Officer | Option | 74,648 | $78K | Form 4 |
| Jan 4, 2023 | Kanesa-thasan Niranjan Chief Medical Officer | Option | 13,806 | $12K | Form 4 |
| Jan 4, 2023 | Kanesa-thasan Niranjan Chief Medical Officer | Sale | 106,373 | $1.67M⚡ | Form 4 |
| Jan 2, 2024 | Simpson Adam K. CEO · Director | Option | 15,000 | $16K | Form 4 |
RA CAPITAL MANAGEMENT, L.P.
Director
Date
Feb 19
Shares
638,668
Price
$15.00
Value
$9.58M ⚡
Simpson Adam K.
other: See Remarks
Date
Feb 19
Shares
129,032
Price
$15.00
Value
$1.94M ⚡
Veneman Ann M
other: See Remarks
Date
Feb 19
Shares
11,209
Price
$15.00
Value
$168K
Cearley Cassia
other: See Remarks
Date
Feb 19
Shares
131,799
Price
$15.00
Value
$1.98M ⚡
FIELDS HEIDI
other: See Remarks
Date
Feb 19
Shares
11,376
Price
$15.00
Value
$171K
Russo Thomas Joseph
other: See Remarks
Date
Feb 19
Shares
39,367
Price
$15.00
Value
$591K
Shiver John W.
other: See Remarks
Date
Feb 19
Shares
8,066
Price
$15.00
Value
$121K
MCDADE MARK
other: See Remarks
Date
Feb 19
Shares
3,510,228
Price
$15.00
Value
$52.65M ⚡
Kanesa-thasan Niranjan
other: See Remarks
Date
Feb 19
Shares
223,980
Price
$15.00
Value
$3.36M ⚡
Kanesa-thasan Niranjan
Chief Medical Officer
Date
Jan 4
Shares
5,972
Price
$15.00
Value
$90K
Kanesa-thasan Niranjan
Chief Medical Officer
Date
Jan 4
Shares
11,947
Price
$5.90
Value
$70K
Kanesa-thasan Niranjan
Chief Medical Officer
Date
Jan 4
Shares
74,648
Price
$1.04
Value
$78K
Kanesa-thasan Niranjan
Chief Medical Officer
Date
Jan 4
Shares
13,806
Price
$0.84
Value
$12K
Kanesa-thasan Niranjan
Chief Medical Officer
Date
Jan 4
Shares
106,373
Price
$15.70
Value
$1.67M ⚡
⚡ = value ≥ $1M · Award/Option price shows — · formType=4 · securityName=Common Stock · url → sec.gov/Archives/edgar
▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —
About ICVX insider trading
ICVX insider trades
Icosavax, Inc. (ICVX) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including ICVX. Over the past 12 months, 0 insiders have filed transactions with the SEC. ICVX insiders have been primarily selling, which may reflect pre-scheduled Rule 10b5-1 plan executions.
For Icosavax, Inc.'s institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →
Frequently asked questions
ICVX insider trading · 5 questionsThe insiders of Icosavax, Inc. (ICVX) include executives and directors such as ICVX, among others. Over the past 12 months, 0 insiders have filed Form 4 transactions with the SEC. Insider transactions are required to be reported within 2 business days of the trade date.
▸ Source: FMP /stable/insider-trading/search · SEC EDGAR Form 3 & 4 · acquisitionOrDisposition A=Buy, D=Sell · RSU vesting (M-Exempt) excluded from sentiment bar · As of Jun 9, 2026