Follow the people · Insider
Simon Read
Simon Read files insider transactions with the SEC as a director of Dianthus Therapeutics, Inc. /DE/ (DNTH). We hold 2 disclosed purchases and sales filed since 3 February 2017, 2 of them in the last 90 days.
- Files forDNTH
- Disclosed buys and sells2 in all, 2 in the last 90 days
- Last disclosure19 August 2026
Positions held
2 posts we hold — a term names its own dates; a run of filings only says when they filed- Filed 22 May 2025 — 19 August 2026Director · Dianthus Therapeutics, Inc. /DE/ (DNTH)13 Form 4 lines · source: SEC Form 4
- Filed 1 February 2017 — 2 April 2020Chief Scientific Officer · Ra Pharmaceuticals (RARX)37 Form 4 lines · source: SEC Form 4
Everything they disclosed
50 entries, newest first — one per disclosure report, one per Form 4 line- exercised options over 2,778 shares of Dianthus Therapeutics, Inc. /DE/SEC Form 419 August 2026Common Stock · traded 19 August 2026 · filed 19 August 2026
- ▼ sold on the open market 2,778 shares of Dianthus Therapeutics, Inc. /DE/SEC Form 419 August 2026Common Stock · traded 19 August 2026 · filed 19 August 2026
- exercised options over 2,778 shares of Dianthus Therapeutics, Inc. /DE/ (a derivative holding)SEC Form 419 August 2026Stock Option (Right to Buy) · traded 19 August 2026 · filed 19 August 2026
- exercised options over 2,777 shares of Dianthus Therapeutics, Inc. /DE/SEC Form 411 August 2026Common Stock · traded 10 August 2026 · filed 11 August 2026
- ▼ sold on the open market 70 shares of Dianthus Therapeutics, Inc. /DE/SEC Form 411 August 2026Common Stock · traded 10 August 2026 · filed 11 August 2026
- ▼ sold on the open market 737 shares of Dianthus Therapeutics, Inc. /DE/SEC Form 411 August 2026Common Stock · traded 10 August 2026 · filed 11 August 2026
- ▼ sold on the open market 831 shares of Dianthus Therapeutics, Inc. /DE/SEC Form 411 August 2026Common Stock · traded 10 August 2026 · filed 11 August 2026
- ▼ sold on the open market 272 shares of Dianthus Therapeutics, Inc. /DE/SEC Form 411 August 2026Common Stock · traded 10 August 2026 · filed 11 August 2026
- ▼ sold on the open market 470 shares of Dianthus Therapeutics, Inc. /DE/SEC Form 411 August 2026Common Stock · traded 10 August 2026 · filed 11 August 2026
- ▼ sold on the open market 397 shares of Dianthus Therapeutics, Inc. /DE/SEC Form 411 August 2026Common Stock · traded 10 August 2026 · filed 11 August 2026
- exercised options over 2,777 shares of Dianthus Therapeutics, Inc. /DE/ (a derivative holding)SEC Form 411 August 2026Stock Option (Right to Buy) · traded 10 August 2026 · filed 11 August 2026
- was granted 6,090 shares of Dianthus Therapeutics, Inc. /DE/ (a derivative holding)SEC Form 422 May 2026Stock Option (Right to Buy) · traded 21 May 2026 · filed 22 May 2026
- was granted 25,000 shares of Dianthus Therapeutics, Inc. /DE/ (a derivative holding)SEC Form 422 May 2025Stock Option (Right to Buy) · traded 22 May 2025 · filed 22 May 2025
- returned to the issuer 46,434 shares of Ra Pharmaceuticals (a derivative holding)SEC Form 43 April 2020Stock Option (Right to Buy) · traded 2 April 2020 · filed 3 April 2020
- returned to the issuer 26,422 shares of Ra Pharmaceuticals (a derivative holding)SEC Form 43 April 2020Stock Option (Right to Buy) · traded 2 April 2020 · filed 3 April 2020
- returned to the issuer 25,000 shares of Ra Pharmaceuticals (a derivative holding)SEC Form 43 April 2020Stock Option (Right to Buy) · traded 2 April 2020 · filed 3 April 2020
- returned to the issuer 67,500 shares of Ra Pharmaceuticals (a derivative holding)SEC Form 43 April 2020Stock Option (Right to Buy) · traded 2 April 2020 · filed 3 April 2020
- returned to the issuer 55,000 shares of Ra Pharmaceuticals (a derivative holding)SEC Form 43 April 2020Stock Option (Right to Buy) · traded 2 April 2020 · filed 3 April 2020
- returned to the issuer 107,000 shares of Ra Pharmaceuticals (a derivative holding)SEC Form 43 April 2020Stock Option (Right to Buy) · traded 2 April 2020 · filed 3 April 2020
- returned to the issuer 9,166 shares of Ra Pharmaceuticals (a derivative holding)SEC Form 43 April 2020Restricted Stock Units · traded 2 April 2020 · filed 3 April 2020
- returned to the issuer 12,595 shares of Ra PharmaceuticalsSEC Form 43 April 2020Common Stock · traded 2 April 2020 · filed 3 April 2020
- exercised options over 10,000 shares of Ra Pharmaceuticals (a derivative holding)SEC Form 418 December 2019Stock Options (Right to buy) · traded 17 December 2019 · filed 18 December 2019
- exercised options over 10,000 shares of Ra PharmaceuticalsSEC Form 418 December 2019COMMON STOCK · traded 17 December 2019 · filed 18 December 2019
- ▼ sold on the open market 10,000 shares of Ra PharmaceuticalsSEC Form 418 December 2019COMMON STOCK · traded 17 December 2019 · filed 18 December 2019
- exercised options over 10,000 shares of Ra Pharmaceuticals (a derivative holding)SEC Form 418 November 2019Stock Options (Right to buy) · traded 14 November 2019 · filed 18 November 2019
- exercised options over 10,000 shares of Ra PharmaceuticalsSEC Form 418 November 2019COMMON STOCK · traded 14 November 2019 · filed 18 November 2019
- ▼ sold on the open market 10,000 shares of Ra PharmaceuticalsSEC Form 418 November 2019COMMON STOCK · traded 14 November 2019 · filed 18 November 2019
- exercised options over 10,000 shares of Ra Pharmaceuticals (a derivative holding)SEC Form 417 October 2019Stock Options (Right to buy) · traded 16 October 2019 · filed 17 October 2019
- exercised options over 10,000 shares of Ra PharmaceuticalsSEC Form 417 October 2019COMMON STOCK · traded 16 October 2019 · filed 17 October 2019
- ▼ sold on the open market 10,000 shares of Ra PharmaceuticalsSEC Form 417 October 2019COMMON STOCK · traded 16 October 2019 · filed 17 October 2019
- exercised options over 10,000 shares of Ra Pharmaceuticals (a derivative holding)SEC Form 416 September 2019Stock Options (Right to buy) · traded 12 September 2019 · filed 16 September 2019
- exercised options over 10,000 shares of Ra PharmaceuticalsSEC Form 416 September 2019COMMON STOCK · traded 12 September 2019 · filed 16 September 2019
- ▼ sold on the open market 10,000 shares of Ra PharmaceuticalsSEC Form 416 September 2019COMMON STOCK · traded 12 September 2019 · filed 16 September 2019
- exercised options over 10,000 shares of Ra Pharmaceuticals (a derivative holding)SEC Form 427 August 2019Stock Options (Right to buy) · traded 23 August 2019 · filed 27 August 2019
- exercised options over 10,000 shares of Ra PharmaceuticalsSEC Form 427 August 2019COMMON STOCK · traded 23 August 2019 · filed 27 August 2019
- ▼ sold on the open market 10,000 shares of Ra PharmaceuticalsSEC Form 427 August 2019COMMON STOCK · traded 23 August 2019 · filed 27 August 2019
- exercised options over 10,000 shares of Ra Pharmaceuticals (a derivative holding)SEC Form 418 July 2019Stock Options (Right to buy) · traded 17 July 2019 · filed 18 July 2019
- exercised options over 10,000 shares of Ra PharmaceuticalsSEC Form 418 July 2019COMMON STOCK · traded 17 July 2019 · filed 18 July 2019
- ▼ sold on the open market 10,000 shares of Ra PharmaceuticalsSEC Form 418 July 2019COMMON STOCK · traded 17 July 2019 · filed 18 July 2019
- exercised options over 10,000 shares of Ra Pharmaceuticals (a derivative holding)SEC Form 419 June 2019Stock Options (Right to buy) · traded 18 June 2019 · filed 19 June 2019
- exercised options over 10,000 shares of Ra PharmaceuticalsSEC Form 419 June 2019COMMON STOCK · traded 18 June 2019 · filed 19 June 2019
- ▼ sold on the open market 9,586 shares of Ra PharmaceuticalsSEC Form 419 June 2019COMMON STOCK · traded 18 June 2019 · filed 19 June 2019
- ▼ sold on the open market 414 shares of Ra PharmaceuticalsSEC Form 419 June 2019COMMON STOCK · traded 18 June 2019 · filed 19 June 2019
- was granted 107,000 shares of Ra Pharmaceuticals (a derivative holding)SEC Form 45 February 2019Options to Purchase Common Stock · traded 1 February 2019 · filed 5 February 2019
- exercised options over 9,167 shares of Ra Pharmaceuticals (a derivative holding)SEC Form 45 February 2019Restricted Stock Units · traded 1 February 2019 · filed 5 February 2019
- exercised options over 9,167 shares of Ra PharmaceuticalsSEC Form 45 February 2019COMMON STOCK · traded 1 February 2019 · filed 5 February 2019
- had shares withheld for tax on 2,933 shares of Ra PharmaceuticalsSEC Form 45 February 2019COMMON STOCK · traded 1 February 2019 · filed 5 February 2019
- was granted 55,000 shares of Ra Pharmaceuticals (a derivative holding)SEC Form 45 February 2018Options to Purchase Common Stock · traded 1 February 2018 · filed 5 February 2018
- was granted 27,500 shares of Ra Pharmaceuticals (a derivative holding)SEC Form 45 February 2018Restricted Stock Unit · traded 1 February 2018 · filed 5 February 2018
- was granted 67,500 shares of Ra Pharmaceuticals (a derivative holding)SEC Form 43 February 2017Options to Purchase Common Stock · traded 1 February 2017 · filed 3 February 2017
Positions come from the unitedstates/congress-legislators roster, the Office of Government Ethics and the SEC’s Form 4 index. Every disclosed line names its own source and links the document the government published; we print what the filing says and never a price we did not read from it. Headlines and links come from the GDELT Global Knowledge Graph — the story stays with the publisher. The portrait, where we have one, is the public-domain Congressional Bioguide photograph.