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Who

Simon Read

Director

Company insider

Files Form 4 as: Director, Dianthus Therapeutics; Chief Scientific Officer, Ra Pharmaceuticals.

In numbers

Trades disclosed
62
Buys
0
Sells
9
Bought
$0
Sold
$3.8M
Companies
2
Companies where not an officer
1
First trade
1 Feb 2017
Last trade
19 Aug 2026
Last filed
19 Aug 2026

Companies traded

Where they are an officer
Ra PharmaceuticalsOfficer · last 2 Apr 20200 buys · 7 sells
Everywhere else they filed: board seats, 10% stakes, other companies
DNTH Dianthus TherapeuticsDirector · Biotechnology · last 19 Aug 20260 buys · 2 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
20Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
19 Aug 2026filed 19 Aug 2026DNTH Dianthus TherapeuticsBiotechnologySEC FORM 4 Code M$51K2,778 at $18.36filing
19 Aug 2026filed 19 Aug 2026DNTH Dianthus TherapeuticsBiotechnologySEC FORM 4 Sold$327K2,778 at $117.55filing
19 Aug 2026filed 19 Aug 2026DNTH Dianthus Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code M—2,778 at $0.00filing
19 Aug 2026filed 19 Aug 2026DNTH Dianthus Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code M—2,778 at $0.00filing
19 Aug 2026filed 19 Aug 2026DNTH Dianthus TherapeuticsBiotechnologySEC FORM 4 Code M$51K2,778 at $18.36filing
19 Aug 2026filed 19 Aug 2026DNTH Dianthus TherapeuticsBiotechnologySEC FORM 4 Sold$327K2,778 at $117.55filing
10 Aug 2026filed 11 Aug 2026DNTH Dianthus TherapeuticsBiotechnologySEC FORM 4 Code M$51K2,777 at $18.36filing
10 Aug 2026filed 11 Aug 2026DNTH Dianthus TherapeuticsBiotechnologySEC FORM 4 Sold$7,49870 at $107.11filing
10 Aug 2026filed 11 Aug 2026DNTH Dianthus TherapeuticsBiotechnologySEC FORM 4 Sold$80K737 at $108.17filing
10 Aug 2026filed 11 Aug 2026DNTH Dianthus Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code M—2,777 at $0.00filing
10 Aug 2026filed 11 Aug 2026DNTH Dianthus TherapeuticsBiotechnologySEC FORM 4 Sold$91K831 at $108.95filing
10 Aug 2026filed 11 Aug 2026DNTH Dianthus TherapeuticsBiotechnologySEC FORM 4 Sold$30K272 at $109.96filing
10 Aug 2026filed 11 Aug 2026DNTH Dianthus TherapeuticsBiotechnologySEC FORM 4 Sold$52K470 at $111.05filing
10 Aug 2026filed 11 Aug 2026DNTH Dianthus TherapeuticsBiotechnologySEC FORM 4 Sold$44K397 at $111.77filing
10 Aug 2026filed 11 Aug 2026DNTH Dianthus Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code M—2,777 at $0.00filing
10 Aug 2026filed 11 Aug 2026DNTH Dianthus TherapeuticsBiotechnologySEC FORM 4 Code M$51K2,777 at $18.36filing
10 Aug 2026filed 11 Aug 2026DNTH Dianthus TherapeuticsBiotechnologySEC FORM 4 Sold$7,49870 at $107.11filing
10 Aug 2026filed 11 Aug 2026DNTH Dianthus TherapeuticsBiotechnologySEC FORM 4 Sold$80K737 at $108.17filing
10 Aug 2026filed 11 Aug 2026DNTH Dianthus TherapeuticsBiotechnologySEC FORM 4 Sold$91K831 at $108.95filing
10 Aug 2026filed 11 Aug 2026DNTH Dianthus TherapeuticsBiotechnologySEC FORM 4 Sold$30K272 at $109.96filing

News

Sectors

Health Care2
Not placed7

Buys in green, sells in red, by the company’s sector.

Related people

Edward CarrChief Accounting Officer · Also traded DNTH in the last 90 days
Simrat RandhawaEVP, Head of R&D · Also traded DNTH in the last 90 days
Adam M. VenessSVP, General Counsel and Sec. · Also traded DNTH in the last 90 days
Anne McGeorgeDirector · Also traded DNTH in the last 90 days
Marino GarciaDirector · Also traded DNTH in the last 90 days