James Samuel Shannon

Board Director

Director

Horizon Therapeutics Public Ltd CoXilio Therapeutics, Inc.Mannkind Corp

Insider activity · 24 months2 buys0 salesCumulative net flow

Nov 24 · 0 buys · 0 salesDec 24 · 0 buys · 0 salesJan 25 · 0 buys · 0 salesFeb 25 · 0 buys · 0 salesMar 25 · 0 buys · 0 salesApr 25 · 0 buys · 0 salesMay 25 · 0 buys · 0 salesJun 25 · 1 buy · 0 salesJul 25 · 0 buys · 0 salesAug 25 · 0 buys · 0 salesSept 25 · 0 buys · 0 salesOct 25 · 0 buys · 0 salesNov 25 · 0 buys · 0 salesDec 25 · 0 buys · 0 salesJan 26 · 0 buys · 0 salesFeb 26 · 0 buys · 0 salesMar 26 · 1 buy · 0 salesApr 26 · 0 buys · 0 salesMay 26 · 0 buys · 0 salesJun 26 · 0 buys · 0 salesJul 26 · 0 buys · 0 salesAug 26 · 0 buys · 0 salesSept 26 · 0 buys · 0 salesOct 26 · 0 buys · 0 sales

Total declarations

Companies

▲ Purchases (2 ops.)

€65k

▼ Sales (0 ops.)

—

Latest filing published 30 Mar 2026 for Xilio Therapeutics, Inc., €38k. Read the official filing

Filing timeline

BuySale

James Samuel Shannon

Insider track record

Disclosed buys

Disclosed sells

T+90 hit rate

100%

T+90 mean return

+9.8%

Across 2 buy signals with a settled T+90 return. Return basis: close on the day after publication.

Signal history

James Samuel Shannon: trading record in brief

James Samuel Shannon, listed as board member, has filed trades across 3 companies (mainly through SEC (Form 4)), most often in Horizon Therapeutics Public Ltd Co, Xilio Therapeutics, Inc. and Mannkind Corp. Over a trading history stretching from 29 April 2022 to 26 March 2026, the count stands at 7 filings.

On the market, this insider has only ever bought: 2 purchases, €65k in total. Buying on the open market means paying the going price with one's own funds, a different act from receiving shares as pay. The rest of the record consists of 1 share grant and 3 option exercises. So far in 2026, the count stands at 1 purchase and no sales.

The record was last updated on 30 March 2026 with an open-market purchase (€38k) in Xilio Therapeutics, Inc. The median gap between a trade and its publication by SEC (Form 4) is 3 days. Section 16 rules allow two business days to file each Form 4. This summary is built from SEC (Form 4) disclosures alone and does not predict where the share price will go.