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Company profile

IRWD

Ironwood Pharmaceuticals Inc.
NASDAQHealth Care

Latest close: 3.50 USD · Oct 16, 2026 · 1 year · split-adjusted

On the price, the facts of the public record■Insider buy□Insider sell◇Significant stake declared (13D)●Results filed
With an account, also○dividends▲splits◌next earningswith an account

End-of-day prices provided by Twelve Data · One close per session; the series does not update during the trading day.

Latest on record

The most recent facts, as filed.

Up to three of the most recent, checkable facts already loaded on this page, each linked to its source.

  1. Oct 16, 2026Material event · 8-KFiled by the company itself.Open the filing ↗
  2. Sep 23, 2026Notice of sale · Form 144Shetzline Michael · Former Officer · $377.4KOpen the filing ↗
  3. Aug 6, 2026Quarterly report · 10-QFiled by the company itself.Open the filing ↗

In numbers

What this profile holds, counted.

Closes · 1 year250
SEC filings on record1,33616 flagged findings
Reported transactions (Form 4)57since Jan 5, 2023 · and 4 other holdings
Corporate events (8-K)30since Dec 16, 2020

What the record says

Description, identity and filings, each with its source.

Every block cites its source. The colour of a finding marks its category — which document, who filed it — not how much it matters.

What the company does

Ironwood Pharmaceuticals, Inc. is a publicly traded pharmaceutical company. It was originally called Microbia, Inc.

Source: Wikipedia (CC BY-SA 4.0) · copied on Sep 3, 2026 · may not reflect recent changes.

SEC record

SEC dossier

What this company has filed with the SEC, in plain language.

The 25 most recent filings (of 1,336)

Everything filed

Every SEC filing, newest first, with what it is. Below, each type with its own explanation.

  • Oct 16, 268-K ↗Current report · A senior executive left or was appointed new
  • Sep 23, 26Form 144 ↗Notice of proposed sale
  • Sep 17, 26Form 4 ↗Insider transaction
  • Aug 14, 26SCHEDULE 13G/A ↗Passive stake · Armistice Capital, LLC · 8.4% · event on Jun 30, 26 · amendment
  • Aug 7, 26SCHEDULE 13G ↗Passive stake · STATE STREET CORPORATION · 5.4% · event on Jun 30, 26
  • Aug 6, 2610-Q ↗Quarterly report
  • Aug 6, 268-K ↗Current report · Results
  • Jul 28, 26SCHEDULE 13G/A ↗Passive stake · BlackRock, Inc. · 8.1% · event on Jun 30, 26 · amendment
  • Jul 22, 26Form 4 ↗Insider transaction
  • Jul 22, 26Form 3 ↗Insider transaction
  • Jul 9, 26Form 4 ↗Insider transaction
  • Jul 7, 26Form 144 ↗Notice of proposed sale
  • Jun 18, 268-K ↗Current report · A senior executive left or was appointed
  • Insider transaction · 7 Form 4 filingsshow all 7hide
  • Jun 16, 26Form 144 ↗Notice of proposed sale
  • Jun 15, 268-K ↗Current report · Other events
  • May 21, 26Form 4 ↗Insider transaction
  • May 21, 268-K/A ↗Current report · A senior executive left or was appointed · amendment
  • May 15, 26SCHEDULE 13G/A ↗Passive stake · Armistice Capital, LLC · 9.2% · event on Mar 31, 26 · amendment

1,336 filings on record, the oldest from Feb 2, 10.

Listing the 25 most recent filings of the 1,336 on record.

8-Ks, explained

Stress11Structure50Governance44
  • Governance4 senior executive changes2026show all 4hide
    • Oct 16, 26GovernanceA senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
    • Jun 18, 26GovernanceA senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
    • May 21, 26GovernanceA senior executive left or was appointed8-K/A 5.02 ↗
    • May 13, 26GovernanceA senior executive left or was appointed8-K 5.02 ↗
  • Dec 23, 25StructureEntered a material agreement+2 more in the same filing8-K 1.01 ↗
  • Oct 10, 25GovernanceA senior executive left or was appointed8-K 5.02 ↗
  • Jul 10, 25GovernanceAuditor change filing (8-K Item 4.01)+1 more in the same filing8-K 4.01 ↗
  • Jun 3, 25StressListing notice (8-K 3.01)8-K 3.01 ↗
  • Mar 27, 25StressListing notice (8-K 3.01)+2 more in the same filing8-K 3.01 ↗
  • Jan 29, 25StressRestructuring plan with committed costs+1 more in the same filing8-K 2.05 ↗
  • Dec 5, 24GovernanceA senior executive left or was appointed8-K 5.02 ↗
  • Nov 12, 24GovernanceA senior executive left or was appointed8-K 5.02 ↗
  • Sep 30, 24StructureEntered a material agreement+3 more in the same filing8-K 1.01 ↗
  • Jun 20, 24GovernanceA senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
  • Jun 30, 23StructureCompleted an acquisition or disposal+3 more in the same filing8-K 2.01 ↗

11 older filings not shown · The record reaches back to Feb 12, 10.

Notable in the record

Stress disclosures older than the timeline above. They are individual events from the record, not a complete timeline: there may be more between them.

  • Sep 29, 20StressRestructuring plan with committed costs8-K 2.05 ↗
  • Feb 13, 19StressRestructuring plan with committed costs+2 more in the same filing8-K 2.05 ↗
  • Aug 6, 18StressWrite-down of assets+4 more in the same filing8-K 2.06 ↗
  • Jun 27, 18StressRestructuring plan with committed costs8-K 2.05 ↗
  • Jan 30, 18StressRestructuring plan with committed costs8-K 2.05 ↗
  • Jan 8, 14StressRestructuring plan with committed costs8-K 2.05 ↗
  • Mar 9, 11StressPast accounts declared unreliable and being restated8-K 4.02 ↗

The full record holds 11 stress filings.

Corporate events are tracked from 2004-08-23, when the SEC renumbered 8-K items. Earlier filings use an incompatible numbering and are not classified here.

Ownership and control

Schedule 13D: stake and stated purpose

Filed by holders above 5% of a share class who cannot use the short form. It includes the investor's stated purpose: read it before assuming they seek influence.

  • Alexander J. Denner5.8%Mar 17, 26SCHEDULE 13D/A ↗2 co-filers on this document — the figure is the largest single stake, not their sum.

Schedule 13G: short-form filing

The short form, for holders who meet specific requirements: institutional investors, passive investors without a control purpose, or exempt investors. Asset managers and index funds usually file it.

show 2 more holdershide
  • Renaissance Technologies LLC4.9%Mar 31, 26SCHEDULE 13G/A ↗2 co-filers on this document — the figure is the largest single stake, not their sum.
  • Barclays PLC1.9%Sep 30, 25SCHEDULE 13G/A ↗1 earlier filing

Structured 13D/G data starts 2023-12, when the SEC moved these filings to a machine-readable format. Earlier filings exist but are not parsed here.

Sale intention announced

On Sep 23, Shetzline Michael filed notice of intent to sell up to $377K. That is about 0.05% of shares outstanding.

A notice is not a sale: it may not go ahead, may happen in part, or at a different price.

No sale of theirs is on record yet in Form 4; the 90-day window is still open.

View notice (Form 144) ↗+1 more recent notices · 1 with a later sale

SEC record

Insider transactions

Buys and sells reported by officers, directors and major shareholders on SEC Form 4.

Buys and sells

  • Jul 7, 26Sell$578KRonald SilverPFO & PAO↗
  • Jun 16, 26Sell$80KJulie McHugh↗
  • Mar 17, 26Sell$20.5MALEXANDER J DENNER↗
  • Mar 17, 26Sell$19KALEXANDER J DENNER↗
  • Feb 24, 26Sell$46KRonald SilverPrincipal Accounting Officer↗
  • Feb 24, 26Sell$379KThomas A MCCOURTChief Executive Officer↗
  • Feb 24, 26Sell$41KTammi L GaskinsChief Commercial Officer↗
  • Feb 24, 26Sell$62KMichael ShetzlineSVP, CMO, Head-Res&Drug↗
  • Feb 24, 26Sell$70KMinardo JohnChief Legal Officer↗
  • Feb 24, 26Sell$42KGregory S. MartiniChief Financial Officer↗
  • Feb 23, 26Sell$44KRonald SilverPrincipal Accounting Officer↗
  • Feb 23, 26Sell$361KThomas A MCCOURTChief Executive Officer↗

There are 8 more transactions in this stretch.

Stock compensation, tax and giftsshow the 20 other transactionshide

Stock compensation, tax withholding, option exercises and gifts. They are listed separately and are not included in the purchase and sale totals. The type describes the transaction, not the filer's intent.

  • Sep 15, 26Compensationamount n/aALEXANDER J DENNER↗
  • Jul 20, 26Compensationamount n/aJeffrey SilberSVP, CMO, Head-Res&Drug↗
  • Jun 16, 26Compensationamount n/aCatherine Moukheibir↗
  • Jun 16, 26Compensationamount n/aJulie McHugh↗
  • Jun 16, 26Compensationamount n/aALEXANDER J DENNER↗
  • Jun 16, 26Compensationamount n/aJon R Duane↗
  • Jun 16, 26Compensationamount n/aMark G Currie↗
  • Jun 16, 26Compensationamount n/aMarla L Kessler↗
  • Jun 16, 26Compensationamount n/aJay Shepard↗
  • Jun 15, 26Compensationamount n/aALEXANDER J DENNER↗
  • May 19, 26Compensationamount n/aRonald SilverPFO & PAO↗
  • Mar 13, 26Compensationamount n/aALEXANDER J DENNER↗
  • Mar 10, 26Compensationamount n/aThomas A MCCOURTChief Executive Officer↗
  • Mar 10, 26Compensationamount n/aGregory S. MartiniChief Financial Officer↗
  • Mar 10, 26Compensationamount n/aMinardo JohnChief Legal Officer↗
  • Mar 10, 26Compensationamount n/aRonald SilverPrincipal Accounting Officer↗
  • Mar 10, 26Compensationamount n/aMichael ShetzlineSVP, CMO, Head-Res&Drug↗
  • Mar 10, 26Compensationamount n/aTammi L GaskinsChief Commercial Officer↗
  • Dec 15, 25Compensationamount n/aALEXANDER J DENNER↗
  • Sep 15, 25Compensationamount n/aALEXANDER J DENNER↗

The full record holds 174 transactions and goes back to Jan 5, 23.

Its sector and its market

Ironwood Pharmaceuticals Inc. among Health Care companies

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Coverage

What sits behind this page.

Where each figure comes from and how far it reaches.

Prices
End-of-day closes provided by Twelve Data. One close per session; not real time. Closes adjusted for splits.
Series quality
250 clean closes in the period.
SEC records
1,336 documents on file, from Feb 2, 2010 to Oct 16, 2026.
Company description
Wikipedia, read on Sep 3, 2026.
This page
Generated on Oct 19, 2026; refreshed through the day.

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Which SEC documents appear here?

Those filed with the SEC by the company, its insiders and its major shareholders, within our coverage: periodic reports (10-K, 10-Q, 20-F), material events (8-K), proposed sale notices (Form 144), insider transactions (Form 4) and stakes above 5% (13D/13G). Each links to the original on EDGAR.

Why does a European company show no SEC records?

It depends on the company: some European issuers file a 20-F or 6-K with the SEC and others don't. The profile shows whatever is on record; when there is nothing, it says so rather than guessing why. Europe does not yet have a common filing archive like EDGAR in the United States. The EU will open its own, ESAP, in July 2027 (managers' transactions arrive in January 2028), and we plan to add it once it is available.

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