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Who

Steven J. Romano

Director

Company insider

Files Form 4 as: Director, Dianthus Therapeutics; EVP and Chief R&D Officer, Silence Therapeutics; EVP & Chief Sci. Ofcr, Mallinckrodt.

In numbers

Trades disclosed
44
Buys
5
Sells
0
Bought
$235K
Sold
$0
Companies
3
Companies where not an officer
1
First trade
1 Jul 2015
Last trade
21 May 2026
Last filed
22 May 2026

Companies traded

Where they are an officer
SLN Silence TherapeuticsOfficer · Biotechnology · last 2 Jan 20260 buys · 0 sells
MallinckrodtOfficer · last 16 Jun 20225 buys · 0 sells
Everywhere else they filed: board seats, 10% stakes, other companies
DNTH Dianthus TherapeuticsDirector · Biotechnology · last 21 May 20260 buys · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
101Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
21 May 2026filed 22 May 2026DNTH Dianthus Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—6,090 at $0.00filing
21 May 2026filed 22 May 2026DNTH Dianthus Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—6,090 at $0.00filing
2 Jan 2026filed 6 Jan 2026SLN Silence Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—300,000 at $0.00filing
2 Jan 2026filed 6 Jan 2026SLN Silence Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—300,000 at $0.00filing
22 May 2025filed 22 May 2025DNTH Dianthus Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—12,500 at $0.00filing
2 Jan 2025filed 6 Jan 2025SLN Silence Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—285,000 at $0.00filing
16 Sep 2024filed 18 Sep 2024DNTH Dianthus Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—22,000 at $0.00filing
16 Jun 2022filed 21 Jun 2022Mallinckrodtoption or derivativeSEC FORM 4 Code D—11,275 at $0.00filing
16 Jun 2022filed 21 Jun 2022Mallinckrodtoption or derivativeSEC FORM 4 Code D—22,288 at $0.00filing
16 Jun 2022filed 21 Jun 2022Mallinckrodtoption or derivativeSEC FORM 4 Code D—59,731 at $0.00filing
16 Jun 2022filed 21 Jun 2022Mallinckrodtoption or derivativeSEC FORM 4 Code D—59,731 at $0.00filing
16 Jun 2022filed 21 Jun 2022Mallinckrodtoption or derivativeSEC FORM 4 Code D—189,201 at $0.00filing
16 Jun 2022filed 21 Jun 2022Mallinckrodtoption or derivativeSEC FORM 4 Code D—102,801 at $0.00filing
16 Jun 2022filed 21 Jun 2022MallinckrodtSEC FORM 4 Code D—72,637 at $0.00filing
2 Apr 2020filed 3 Apr 2020MallinckrodtSEC FORM 4 Code F$5,4403,022 at $1.80filing
1 Apr 2020filed 3 Apr 2020MallinckrodtSEC FORM 4 Code F$3,7131,924 at $1.93filing
4 Jan 2020filed 7 Jan 2020MallinckrodtSEC FORM 4 Code F$926284 at $3.26filing
3 Jan 2020filed 7 Jan 2020MallinckrodtSEC FORM 4 Code F$2,967883 at $3.36filing
1 Jul 2019filed 3 Jul 2019MallinckrodtSEC FORM 4 Code F$2,591285 at $9.09filing
2 Apr 2019filed 3 Apr 2019MallinckrodtSEC FORM 4 Code F$71K3,103 at $22.80filing

News

No headline names them, or the companies they trade most, lately.

Sectors

Not placed5

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

Related people

GOLDENTREE ASSET MANAGEMENT LP10% owner · 10% owner at Keenova Therapeutics, filing Form 4 there in the last year
Richard Ian Griffiths10% owner · 10% owner at Silence Therapeutics, filing Form 4 there in the last year
Susan Ann WilliamsonEVP & Chief Compliance Officer · EVP & Chief Compliance Officer at Keenova Therapeutics, filing Form 4 there in the last year
Tracy BassoEVP & Chro · EVP & Chro at Keenova Therapeutics, filing Form 4 there in the last year
Cheryl Ann StouchEVP & Chief Info Officer · EVP & Chief Info Officer at Keenova Therapeutics, filing Form 4 there in the last year