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Who

Ronald Silver

Pfo & Pao

Company insider

Files Form 4 as: Pfo & Pao, Ironwood Pharmaceuticals.

In numbers

Trades disclosed
36
Buys
0
Sells
18
Bought
$0
Sold
$2.0M
Companies
1
Companies where not an officer
0
First trade
20 Jul 2021
Last trade
7 Jul 2026
Last filed
9 Jul 2026

Companies traded

Where they are an officer
IRWD Ironwood PharmaceuticalsOfficer · Pharmaceuticals · last 7 Jul 20260 buys · 18 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
7 Jul 2026filed 9 Jul 2026IRWD Ironwood PharmaceuticalsPharmaceuticalsSEC FORM 4 Sold$578K127,890 at $4.52filing
7 Jul 2026filed 9 Jul 2026IRWD Ironwood PharmaceuticalsPharmaceuticalsSEC FORM 4 Sold$578K127,890 at $4.52filing
19 May 2026filed 21 May 2026IRWD Ironwood PharmaceuticalsPharmaceuticalsSEC FORM 4 Code A—25,000 at $0.00filing
19 May 2026filed 21 May 2026IRWD Ironwood PharmaceuticalsPharmaceuticalsSEC FORM 4 Code A—25,000 at $0.00filing
10 Mar 2026filed 12 Mar 2026IRWD Ironwood PharmaceuticalsPharmaceuticalsSEC FORM 4 Code A—163,934 at $0.00filing
10 Mar 2026filed 12 Mar 2026IRWD Ironwood PharmaceuticalsPharmaceuticalsSEC FORM 4 Code A—163,934 at $0.00filing
24 Feb 2026filed 25 Feb 2026IRWD Ironwood PharmaceuticalsPharmaceuticalsSEC FORM 4 Sold$46K12,621 at $3.66filing
24 Feb 2026filed 25 Feb 2026IRWD Ironwood PharmaceuticalsPharmaceuticalsSEC FORM 4 Sold$46K12,621 at $3.66filing
23 Feb 2026filed 25 Feb 2026IRWD Ironwood PharmaceuticalsPharmaceuticalsSEC FORM 4 Sold$44K11,552 at $3.81filing
23 Feb 2026filed 25 Feb 2026IRWD Ironwood PharmaceuticalsPharmaceuticalsSEC FORM 4 Sold$44K11,552 at $3.81filing
5 Jan 2026filed 7 Jan 2026IRWD Ironwood PharmaceuticalsPharmaceuticalsSEC FORM 4 Sold$163K35,416 at $4.60filing
5 Jan 2026filed 7 Jan 2026IRWD Ironwood PharmaceuticalsPharmaceuticalsSEC FORM 4 Sold$163K35,416 at $4.60filing
11 Aug 2025filed 13 Aug 2025IRWD Ironwood PharmaceuticalsPharmaceuticalsSEC FORM 4 Sold$2,3912,846 at $0.84filing
10 Feb 2025filed 12 Feb 2025IRWD Ironwood PharmaceuticalsPharmaceuticalsSEC FORM 4 Sold$21K12,048 at $1.76filing
27 Jan 2025filed 29 Jan 2025IRWD Ironwood PharmaceuticalsPharmaceuticalsSEC FORM 4 Code A—133,333 at $0.00filing
12 Aug 2024filed 14 Aug 2024IRWD Ironwood PharmaceuticalsPharmaceuticalsSEC FORM 4 Sold$13K3,107 at $4.27filing
12 Feb 2024filed 14 Feb 2024IRWD Ironwood PharmaceuticalsPharmaceuticalsSEC FORM 4 Sold$121K7,908 at $15.24filing
12 Feb 2024filed 14 Feb 2024IRWD Ironwood PharmaceuticalsPharmaceuticalsSEC FORM 4 Code A—27,213 at $0.00filing
29 Aug 2023filed 31 Aug 2023IRWD Ironwood PharmaceuticalsPharmaceuticalsSEC FORM 4 Code A—8,000 at $0.00filing
14 Aug 2023filed 16 Aug 2023IRWD Ironwood PharmaceuticalsPharmaceuticalsSEC FORM 4 Sold$20K1,976 at $10.04filing

News

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

Sectors

Health Care18

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

Related people

Alexander J. DennerDirector · Director at Ironwood Pharmaceuticals, filing Form 4 there in the last year
Jeffrey SilberSVP, CMO, Head-Res&Drug · SVP, CMO, Head-Res&Drug at Ironwood Pharmaceuticals, filing Form 4 there in the last year
Julie McHughDirector · Director at Ironwood Pharmaceuticals, filing Form 4 there in the last year
Jay ShepardDirector · Director at Ironwood Pharmaceuticals, filing Form 4 there in the last year
Marla L. KesslerDirector · Director at Ironwood Pharmaceuticals, filing Form 4 there in the last year