Massivemarkets

SEC Form 4

Rapport Therapeutics, Inc. (RAPP) insider trading

In the 12 months to Oct 26, 2026, 9 RAPP insiders reported open-market sales of $46.9M across 32 filings; 6 insiders bought $1.7M.

Latest filing · Last 12 months · Source: SEC EDGAR · How we count

Open-market sales
$46.9M
32 filings · 9 insiders
Open-market purchases
$1.7M
6 filings
Pre-arranged sales (10b5-1)
32 of 32
All $46.9M sold was pre-arranged

Who traded RAPP, and when

  • Purchase
  • Sale
  • Sale, pre-arranged (10b5-1)

RAPP daily close from Oct 27, 2025 to Oct 26, 2026, between $24.37 and $52.50, last $25.71. 32 sale and 6 purchase filings by 15 insiders, marked at their filing dates. Third Rock Ventures GP VI, L.P., 10% owner: sold $17.2M across 1 filing, first filed Apr 21, 2026, last Apr 21, 2026. TRV GP VI, LLC, 10% owner: sold $10.9M across 1 filing, first filed May 11, 2026, last May 11, 2026. Abraham Ceesay, Chief Executive Officer: sold $6.0M across 13 filings, first filed Nov 18, 2025, last Oct 23, 2026. Third Rock Ventures GP V, LP, 10% owner: sold $5.4M across 1 filing, first filed May 13, 2026, last May 13, 2026. Krishnaswamy Yeleswaram, Chief Development Officer: sold $4.4M across 6 filings, first filed Mar 26, 2026, last Aug 26, 2026. Cheryl Gault, Chief Operating Officer: sold $1.2M across 4 filings, first filed Dec 1, 2025, last Oct 1, 2026. Steven M. Paul, Director: bought $974.3K across 1 filing, first filed Oct 22, 2026, last Oct 22, 2026. John Maraganore, Director: bought $248.9K across 1 filing, first filed Oct 22, 2026, last Oct 22, 2026. Troy A. Ignelzi, Chief Financial Officer: bought $143.6K across 1 filing, first filed Oct 21, 2026, last Oct 21, 2026. Wendy B. Young, Director: bought $100.0K across 1 filing, first filed Oct 22, 2026, last Oct 22, 2026. Paul M. Silva, Director: bought $99.6K across 1 filing, first filed Oct 22, 2026, last Oct 22, 2026. Ramiro Sanchez, Director: bought $98.5K across 1 filing, first filed Oct 23, 2026, last Oct 23, 2026. 3 others: sold $1.9M across 6 filings, first filed Nov 18, 2025, last May 28, 2026.

Largest mark · tap a row for others

Third Rock Ventures GP VI, L.P. · 10% owner

Sale $17,175,244

426,005 shares at $40.32 avg

Filed Apr 21, 2026 · traded Apr 17

Pre-arranged (10b5-1) · close on filing date $36.95

RAPP daily closelast $25.71

Third Rock Ventures GP VI, L.P. · 10% owner

$17.2M sold

TRV GP VI, LLC · 10% owner

$10.9M sold

Abraham Ceesay · Chief Executive Officer

$6.0M sold

Third Rock Ventures GP V, LP · 10% owner

$5.4M sold

Krishnaswamy Yeleswaram · Chief Development Officer

$4.4M sold

Cheryl Gault · Chief Operating Officer

$1.2M sold

Steven M. Paul · Director

$974.3K bought

John Maraganore · Director

$248.9K bought

Troy A. Ignelzi · Chief Financial Officer

$143.6K bought

Wendy B. Young · Director

$100.0K bought

Paul M. Silva · Director

$99.6K bought

Ramiro Sanchez · Director

$98.5K bought

3 others

$1.9M sold
One row per insider, smaller filers combined; marks sit at the SEC filing date, sized by dollar value.

Open-market trades

38 filings in the last 12 months
Other insider activity (not market trades) · 7 records
  • Option exercises2 records
  • Tax withholding (sold to cover)3 records
  • Grants and awards2 records

Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.

How to read this page

Open-market purchase or sale
A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
Pre-arranged (10b5-1)
The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
Filing date
Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
Counted once
When several owners (a fund and its partners, say) report the same trade, it's counted once. Corrected filings replace the originals.

Frequently asked questions

Has Rapport Therapeutics, Inc.'s CEO sold stock?

Yes. Abraham Ceesay (CEO) sold 149,876 shares ($6.0M) between Nov 2025 and Oct 2026, all under a pre-arranged 10b5-1 plan.

How current is RAPP’s insider data?

These are RAPP Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.

What counts as an open-market buy or sell?

Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.

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Track RAPP insider trades with your agent

This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:

Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for RAPP every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.

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