Feeds › Planned insider sales
Planned insider sales
Notices (SEC Form 144) that executives and other insiders file before selling shares, and whether a sale was reported afterwards.
About this data
- What it is
- Before an executive, director or large owner sells restricted or control shares, they file a short notice with the SEC, called Form 144, saying how many shares they plan to sell, through which broker and roughly when. This feed lists those notices, and for each one shows whether a sale was reported afterwards on a Form 4 and how many days later.
- Who files it
- The person selling, or their broker, on the day the sale is placed. Electronic notices start in April 2023.
- How current
- We collect new notices throughout the day on SEC business days.
- Terms
- Form 144The notice an insider or other affiliate of a company files with the SEC before selling restricted or control shares, so the shares can be sold under Rule 144. The notice says how many shares, through which broker, and roughly when.10b5-1 planA Rule 10b5-1 trading plan lets an insider set up future sales in advance, on a schedule or at set prices, at a time when they do not hold inside information. A notice that gives a plan adoption date says the sale is made under such a plan.
- Worth knowing
- A notice is a plan, not a sale: the person may sell fewer shares, later, or not at all. The value is the one the filer typed, at a price they chose, not what the shares sell for. Many sales are routine, made to diversify or pay taxes, or under a 10b5-1 plan set up months earlier. A blank in the last column does not mean no sale: the person may not have to file a Form 4 (an ordinary affiliate does not), the sale may be recent, or the Form 4 may name a different spelling of the person. We match by the filer's number first and by name second. Information, not investment advice.
All of this comes from public filings.
Source and freshness · Information, not investment advice (disclaimer).
Form 144 notices per day, last 30 days
All notices Notices that give a 10b5-1 plan
By the day each notice was filed. A notice is a plan to sell, not a sale.
Latest notices of planned insider sales
Showing: ticker SION
| Filed | Insider | Company | Shares to sellA notice is a plan, not a sale. The person may sell fewer shares, sell later, or not sell at all, and the number of shares is what they expect to sell on the day they file. | ValueThe aggregate market value the filer typed on the notice: the shares times a price the filer chose. It is not what the shares will sell for. | PlanA Rule 10b5-1 trading plan lets an insider set up future sales in advance, on a schedule or at set prices, at a time when they do not hold inside information. A notice that gives a plan adoption date says the sale is made under such a plan. | Expected sale | Sale reportedInsiders who are officers, directors or hold more than 10% report their sales on a Form 4, within two business days. We look for the first Form 4 with an open-market sale by the same person in the same company within 90 days of the notice, and show how many days after the notice it was filed. A blank means we found none: the person may not have sold, may not have to file a Form 4, or the Form 4 may be one we do not have. | Notice |
|---|---|---|---|---|---|---|---|---|
| Sep 17, 2026 | RA Capital Healthcare Fund, L.P. Director, 10% Stockholder | SION Sionna Therapeutics, Inc. | 3.45M | $21.8M | — | Sep 17, 2026 | Form 4 ↗ 4 days later · 3.45M shares | Form 144 ↗ |
| Jul 6, 2026 | Jennifer Fitzpatrick Officer | SION Sionna Therapeutics, Inc. | 10,250 | $450.9K | 10b5-1 | Jul 6, 2026 | Form 4 ↗ 1 day later · 10,250 shares | Form 144 ↗ |
| Jun 1, 2026 amended | OrbiMed Private Investments VIII, LP Shareholder | SION Sionna Therapeutics, Inc. | 210,876 | $9.0M | 10b5-1 | May 29, 2026 | Form 4 ↗ 31 days later · 115,844 shares | Form 144/A ↗ |
| May 29, 2026 | OrbiMed Private Investments VIII, LP Shareholder | SION Sionna Therapeutics, Inc. | 1.08M | $46.3M | 10b5-1 | May 29, 2026 | Form 4 ↗ 34 days later · 115,844 shares | Form 144 ↗ |
| Mar 5, 2026 | Jennifer Fitzpatrick Officer | SION Sionna Therapeutics, Inc. | 10,250 | $354.3K | 10b5-1 | Mar 5, 2026 | Form 4 ↗ 1 day later · 10,250 shares | Form 144 ↗ |
| Jan 22, 2026 | Rise Fund Sling, L.P. Stockholder | SION Sionna Therapeutics, Inc. | 195,667 | $8.2M | — | Jan 22, 2026 | — | Form 144 ↗ |
| Jan 22, 2026 | Rise Fund Sling II, L.P. Stockholder | SION Sionna Therapeutics, Inc. | 54,333 | $2.3M | — | Jan 22, 2026 | — | Form 144 ↗ |
| Dec 5, 2025 | Jennifer R Fitzpatrick Officer | SION Sionna Therapeutics, Inc. | 10,250 | $419.0K | 10b5-1 | Dec 5, 2025 | Form 4 ↗ 4 days later · 10,250 shares | Form 144 ↗ |
| Nov 24, 2025 | OrbiMed Private Investments VIII, LP Shareholder | SION Sionna Therapeutics, Inc. | 1.05M | $46.5M | 10b5-1 | Nov 24, 2025 | Form 4 ↗ 2 days later · 108,073 shares | Form 144 ↗ |
| Nov 21, 2025 | RA Capital Healthcare Fund LP Director, 10% Stockholder | SION Sionna Therapeutics, Inc. | 1,210 | $52.8K | — | Nov 21, 2025 | Form 4 ↗ 3 days later · 30,316 shares | Form 144 ↗ |
| Nov 21, 2025 | RA Capital Nexus Fund III, L.P. Director, 10% Stockholder | SION Sionna Therapeutics, Inc. | 6,440 | $281.2K | — | Nov 21, 2025 | Form 4 ↗ 3 days later · 30,316 shares | Form 144 ↗ |
| Nov 21, 2025 | RA Capital Nexus Fund, L.P. Director, 10% Stockholder | SION Sionna Therapeutics, Inc. | 9,924 | $433.3K | — | Nov 21, 2025 | Form 4 ↗ 3 days later · 30,316 shares | Form 144 ↗ |
| Nov 21, 2025 | Blackwell Partners LLC - Series A Director, 10% Stockholder | SION Sionna Therapeutics, Inc. | 7,609 | $332.2K | — | Nov 21, 2025 | — | Form 144 ↗ |
| Nov 20, 2025 | RA Capital Nexus Fund III, L.P. Director, 10% Stockholder | SION Sionna Therapeutics, Inc. | 1,313 | $51.1K | — | Nov 20, 2025 | Form 4 ↗ 4 days later · 30,316 shares | Form 144 ↗ |
| Nov 20, 2025 | RA Capital Nexus Fund, L.P. Director, 10% Stockholder | SION Sionna Therapeutics, Inc. | 2,023 | $78.8K | — | Nov 20, 2025 | Form 4 ↗ 4 days later · 30,316 shares | Form 144 ↗ |
| Nov 20, 2025 | RA Capital Healthcare Fund LP Director, 10% Stockholder | SION Sionna Therapeutics, Inc. | 246 | $9,579 | — | Nov 20, 2025 | Form 4 ↗ 4 days later · 30,316 shares | Form 144 ↗ |
| Nov 20, 2025 | Blackwell Partners LLC - Series A Director, 10% Stockholder | SION Sionna Therapeutics, Inc. | 1,551 | $60.4K | — | Nov 20, 2025 | — | Form 144 ↗ |
| Nov 19, 2025 | RA Capital Healthcare Fund LP Director, 10% Stockholder | SION Sionna Therapeutics, Inc. | 2,278 | $89.1K | — | Nov 19, 2025 | Form 4 ↗ same day · 136,351 shares | Form 144 ↗ |
| Nov 19, 2025 | Blackwell Partners LLC - Series A Director, 10% Stockholder | SION Sionna Therapeutics, Inc. | 14,334 | $550.6K | — | Nov 19, 2025 | — | Form 144 ↗ |
| Nov 19, 2025 | RA Capital Nexus Fund, L.P. Director, 10% Stockholder | SION Sionna Therapeutics, Inc. | 18,696 | $718.1K | — | Nov 19, 2025 | Form 4 ↗ same day · 136,351 shares | Form 144 ↗ |
| Nov 19, 2025 | RA Capital Nexus Fund III, L.P. Director, 10% Stockholder | SION Sionna Therapeutics, Inc. | 12,134 | $466.1K | — | Nov 19, 2025 | Form 4 ↗ same day · 136,351 shares | Form 144 ↗ |
| Nov 18, 2025 | Blackwell Partners LLC - Series A Director, 10% Stockholder | SION Sionna Therapeutics, Inc. | 2,092 | $81.7K | — | Nov 18, 2025 | — | Form 144 ↗ |
| Nov 18, 2025 | RA Capital Nexus Fund, L.P. Director, 10% Stockholder | SION Sionna Therapeutics, Inc. | 2,728 | $106.5K | — | Nov 18, 2025 | Form 4 ↗ 1 day later · 136,351 shares | Form 144 ↗ |
| Nov 18, 2025 | RA Capital Nexus Fund III, L.P. Director, 10% Stockholder | SION Sionna Therapeutics, Inc. | 1,770 | $69.1K | — | Nov 18, 2025 | Form 4 ↗ 1 day later · 136,351 shares | Form 144 ↗ |
| Nov 18, 2025 | RA Capital Healthcare Fund LP Director, 10% Stockholder | SION Sionna Therapeutics, Inc. | 332 | $13.0K | — | Nov 18, 2025 | Form 4 ↗ 1 day later · 136,351 shares | Form 144 ↗ |
| Nov 17, 2025 | Blackwell Partners LLC - Series A Director, 10% Stockholder | SION Sionna Therapeutics, Inc. | 24,772 | $989.1K | — | Nov 17, 2025 | — | Form 144 ↗ |
| Nov 17, 2025 | RA Capital Nexus Fund, L.P. Director, 10% Stockholder | SION Sionna Therapeutics, Inc. | 32,310 | $1.3M | — | Nov 17, 2025 | Form 4 ↗ 2 days later · 136,351 shares | Form 144 ↗ |
| Nov 17, 2025 | RA Capital Nexus Fund III, L.P. Director, 10% Stockholder | SION Sionna Therapeutics, Inc. | 20,969 | $837.3K | — | Nov 17, 2025 | Form 4 ↗ 2 days later · 136,351 shares | Form 144 ↗ |
| Nov 17, 2025 | RA Capital Healthcare Fund LP Director, 10% Stockholder | SION Sionna Therapeutics, Inc. | 3,936 | $157.2K | — | Nov 17, 2025 | Form 4 ↗ 2 days later · 136,351 shares | Form 144 ↗ |
| Oct 28, 2025 | RA Capital Nexus Fund III, L.P. Director, 10% Stockholder | SION Sionna Therapeutics, Inc. | 17,118 | $675.3K | — | Oct 28, 2025 | Form 4 ↗ same day · 62,610 shares | Form 144 ↗ |
| Oct 28, 2025 | RA Capital Healthcare Fund LP Director, 10% Stockholder | SION Sionna Therapeutics, Inc. | 3,624 | $143.0K | — | Oct 28, 2025 | Form 4 ↗ same day · 62,610 shares | Form 144 ↗ |
| Oct 28, 2025 | RA Capital Nexus Fund, L.P. Director, 10% Stockholder | SION Sionna Therapeutics, Inc. | 31,392 | $1.2M | — | Oct 28, 2025 | Form 4 ↗ same day · 62,610 shares | Form 144 ↗ |
| Oct 28, 2025 | Blackwell Partners LLC - Series A Director, 10% Stockholder | SION Sionna Therapeutics, Inc. | 10,476 | $413.3K | — | Oct 28, 2025 | — | Form 144 ↗ |
| Oct 24, 2025 | RA Capital Nexus Fund, L.P. Director, 10% Stockholder | SION Sionna Therapeutics, Inc. | 122,271 | $4.8M | — | Oct 24, 2025 | Form 4 ↗ 4 days later · 373,610 shares | Form 144 ↗ |
| Oct 24, 2025 | RA Capital Nexus Fund III, L.P. Director, 10% Stockholder | SION Sionna Therapeutics, Inc. | 66,672 | $2.6M | — | Oct 24, 2025 | Form 4 ↗ 4 days later · 373,610 shares | Form 144 ↗ |
| Oct 24, 2025 | RA Capital Healthcare Fund LP Director, 10% Stockholder | SION Sionna Therapeutics, Inc. | 14,116 | $553.5K | — | Oct 24, 2025 | Form 4 ↗ 4 days later · 373,610 shares | Form 144 ↗ |
| Oct 24, 2025 | Blackwell Partners LLC - Series A Director, 10% Stockholder | SION Sionna Therapeutics, Inc. | 107,941 | $4.2M | — | Oct 24, 2025 | — | Form 144 ↗ |
| Oct 21, 2025 | Michael Cloonan Director, Officer | SION Sionna Therapeutics, Inc. | 99,800 | $3.2M | 10b5-1 | Oct 21, 2025 | Form 4 ↗ 1 day later · 99,800 shares | Form 144 ↗ |
| Oct 21, 2025 | Atlas Venture Opportunity Fund II, L.P. Shareholder | SION Sionna Therapeutics, Inc. | 15,418 | $496.5K | 10b5-1 | Oct 21, 2025 | — | Form 144 ↗ |
| Oct 21, 2025 | Atlas Venture Fund XI, LP Shareholder | SION Sionna Therapeutics, Inc. | 73,460 | $2.4M | 10b5-1 | Oct 21, 2025 | — | Form 144 ↗ |
| Oct 20, 2025 | Atlas Venture Fund XI, LP Shareholder | SION Sionna Therapeutics, Inc. | 46,273 | $1.5M | 10b5-1 | Oct 20, 2025 | — | Form 144 ↗ |
| Oct 20, 2025 | Atlas Venture Opportunity Fund II, L.P. Shareholder | SION Sionna Therapeutics, Inc. | 9,712 | $310.1K | 10b5-1 | Oct 20, 2025 | — | Form 144 ↗ |
| Oct 17, 2025 | Atlas Venture Opportunity Fund II, L.P. Shareholder | SION Sionna Therapeutics, Inc. | 10,604 | $346.9K | 10b5-1 | Oct 17, 2025 | — | Form 144 ↗ |
| Oct 17, 2025 | Atlas Venture Fund XI, LP Shareholder | SION Sionna Therapeutics, Inc. | 50,520 | $1.7M | 10b5-1 | Oct 17, 2025 | — | Form 144 ↗ |
| Oct 16, 2025 | Michael Cloonan Director, Officer | SION Sionna Therapeutics, Inc. | 200 | $6,182 | 10b5-1 | Oct 16, 2025 | Form 4 ↗ 1 day later · 25,200 shares | Form 144 ↗ |
| Oct 16, 2025 | Atlas Venture Fund XI, LP Shareholder | SION Sionna Therapeutics, Inc. | 139,897 | $4.3M | 10b5-1 | Oct 16, 2025 | — | Form 144 ↗ |
| Oct 16, 2025 | Atlas Venture Opportunity Fund II, L.P. Shareholder | SION Sionna Therapeutics, Inc. | 29,363 | $907.6K | 10b5-1 | Oct 16, 2025 | — | Form 144 ↗ |
| Oct 15, 2025 | Michael Cloonan Director, Officer | SION Sionna Therapeutics, Inc. | 25,000 | $748.5K | 10b5-1 | Oct 15, 2025 | Form 4 ↗ 2 days later · 25,200 shares | Form 144 ↗ |
| Oct 14, 2025 | Atlas Venture Fund XI, LP Shareholder | SION Sionna Therapeutics, Inc. | 501 | $14.7K | 10b5-1 | Oct 14, 2025 | — | Form 144 ↗ |
| Oct 14, 2025 | Atlas Venture Fund XI, LP Shareholder | SION Sionna Therapeutics, Inc. | 48,130 | $1.4M | 10b5-1 | Oct 13, 2025 | — | Form 144 ↗ |
The newest 50 items, most recent first. Every row links to the notice on the SEC's site, and to the Form 4 when we found one. Updated Nov 15, 2026, 6:40 PM EST.
Download CSV The rows of this feed, with the filters above. A download holds at most 10,000 rows; narrow the filters to get a smaller slice.
Other feeds: Congressional trades · Executive-branch trades · Bills in Congress · Roll-call votes · Corporate PAC donations · Lobbying · Capitol Hires · Lobbying and contracts · Government contracts · Insider trades · Executive pay · Ownership stakes (13D / 13G) · Institutional holdings (13F) · Short interest · Fails to deliver · Daily short volume · Wikipedia page views · App store ratings · H-1B visa applications · Stock splits · 8-K events · IPO filings · Deals · Private placements (Form D) · Merger clearances (HSR) · Layoff notices (WARN) · SEC enforcement · Patents · Clinical trial updates · FDA approvals and clearances