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See how Context works →On the price, the facts of the public record●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.
- Sep 25, 2026Material event · 8-KFiled by the company itself.Open the filing ↗
- Aug 14, 2026Notice of sale · Form 144Mark Mossler · Officer · $17.6KOpen the filing ↗
- Aug 14, 2026Notice of sale · Form 144JAY GELDMACHER · Former REZI CEO · $1.9MOpen the filing ↗
In numbers
What this profile holds, counted.
Closes · 1 year250
SEC filings on record51817 flagged findings
Reported transactions (Form 4)80since Jun 20, 2024 · and 6 other holdings
Corporate events (8-K)29since Oct 6, 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.
Regulatory history
Topics detected in its SEC reports, with the original excerpt.
Each topic is assigned by a classifier over the full filing; the excerpts show where it was detected and are not always enough to verify it. Open the filing to read it in full.
- 2026-05-12share offering or dilution eventrecentOpen filing ↗“…or the Class B Warrants, and together with the Pre-Funded Warrants and the Class A Warrants, the Warrants. Each Share was offered and…”
+1 more passage from the same document
- “…with accompanying Class A and Class B Warrants each exercisable for one share of Common Stock at a combined offering price of…”
- 2026-05-12capital return (buybacks/dividends)recentOpen filing ↗“…of marketable securities 57,029 54,765 Purchases of marketable securities ( 40,812 ) ( 25,640 ) Purchases of property and…”
Original excerpts from SEC filings, untranslated. Not advice and not a prediction.
The 25 most recent filings (of 518)
Every SEC filing, newest first, with what it is. Below, each type with its own explanation.
- Sep 25, 268-K ↗Current report · Communication to the market · Other events
- Sep 21, 26Form 4 ↗Insider transaction
- Aug 14, 26SCHEDULE 13G/A ↗Passive stake · Squadron Master Fund LP · 6.9% · event on Jun 30, 26 · amendment
Notice of proposed sale · 2 Form 144 filingsshow all 2hide
- Aug 14, 26Form 144 ↗Notice of proposed sale
- Aug 14, 26Form 144 ↗Notice of proposed sale
- Aug 14, 26SCHEDULE 13G/A ↗Passive stake · RA Capital Management, L.P. · 9.9% · event on Jun 30, 26 · amendment
- Aug 14, 26SCHEDULE 13G/A ↗Passive stake · Lynx1 Capital Management LP · 10.0% · event on Jun 30, 26 · amendment
Notice of proposed sale · 2 Form 144 filingsshow all 2hide
- Aug 13, 26Form 144 ↗Notice of proposed sale
- Aug 12, 26Form 144 ↗Notice of proposed sale
- Aug 12, 26SCHEDULE 13G/A ↗Passive stake · Morgan Stanley · 8.0% · event on Jun 30, 26 · amendment
- Aug 11, 2610-Q ↗Quarterly report
- Aug 11, 268-K ↗Current report · Results
- Jul 27, 26SCHEDULE 13G ↗Passive stake · BlackRock, Inc. · 6.9% · event on Jun 30, 26
Insider transaction · 10 Form 4 filingsshow all 10hide
- Jul 13, 26Form 4 ↗Insider transaction
- Jul 2, 26Form 4 ↗Insider transaction
- Jul 2, 26Form 4 ↗Insider transaction
- Jun 26, 26Form 4 ↗Insider transaction
- Jun 26, 26Form 4 ↗Insider transaction
- Jun 26, 26Form 4 ↗Insider transaction
- Jun 26, 26Form 4 ↗Insider transaction
- Jun 26, 26Form 4 ↗Insider transaction
- Jun 26, 26Form 4 ↗Insider transaction
- Jun 26, 26Form 4 ↗Insider transaction
518 filings on record, the oldest from Sep 2, 20.
Listing the 25 most recent filings of the 518 on record.
1820
- May 15, 26A senior executive left or was appointed8-K 5.02 ↗
- Apr 9, 26Entered a material agreement+2 more in the same filing8-K 1.01 ↗
- Oct 16, 25Entered a material agreement+1 more in the same filing8-K 1.01 ↗
8 senior executive changes2024 – 2025show all 8hide
- Apr 14, 25A senior executive left or was appointed8-K 5.02 ↗
- Nov 20, 24A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- Oct 16, 24A senior executive left or was appointed+2 more in the same filing8-K/A 5.02 ↗
- Oct 15, 24A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- Oct 11, 24A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Sep 3, 24A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- Jun 10, 24A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- Mar 8, 24A senior executive left or was appointed8-K 5.02 ↗
- Mar 4, 24Entered a material agreement+2 more in the same filing8-K 1.01 ↗
- Jan 9, 24Restructuring plan with committed costs+2 more in the same filing8-K 2.05 ↗
- Dec 12, 23Entered a material agreement+2 more in the same filing8-K 1.01 ↗
3 senior executive changes2023show all 3hide
- Nov 20, 23A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- Sep 5, 23A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Jun 20, 23A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- May 30, 23Entered a material agreement+2 more in the same filing8-K 1.01 ↗
4 senior executive changes2022 – 2023show all 4hide
- Feb 2, 23A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Aug 2, 22A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- Jun 17, 22A senior executive left or was appointed8-K 5.02 ↗
- Mar 16, 22A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- Nov 30, 21Entered a material agreement+2 more in the same filing8-K 1.01 ↗
4 senior executive changes2020 – 2021show all 4hide
- May 20, 21A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Apr 30, 21A senior executive left or was appointed8-K 5.02 ↗
- Mar 11, 21A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- Oct 6, 20A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
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.
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.
- Lynx1 Capital Management LP10.0%Jun 30, 26SCHEDULE 13G/A ↗2 co-filers on this document — the figure is the largest single stake, not their sum. · 1 earlier filing
- Soleus Capital Master Fund, L.P.10.0%Dec 31, 25SCHEDULE 13G/A ↗9 co-filers on this document — the figure is the largest single stake, not their sum.
- RA Capital Management, L.P.9.9%Jun 30, 26SCHEDULE 13G/A ↗4 co-filers on this document — the figure is the largest single stake, not their sum. · 1 earlier filing
- Sirenia Capital Management LP9.9%Mar 31, 26SCHEDULE 13G ↗2 co-filers on this document — the figure is the largest single stake, not their sum.
- Morgan Stanley8.0%Jun 30, 26SCHEDULE 13G/A ↗3 co-filers on this document — the figure is the largest single stake, not their sum. · 1 earlier filing
show 6 more holdershide
- Squadron Master Fund LP6.9%Jun 30, 26SCHEDULE 13G/A ↗4 co-filers on this document — the figure is the largest single stake, not their sum. · 1 earlier filing
- BlackRock, Inc.6.9%Jun 30, 26SCHEDULE 13G ↗
- BCLS II Equity Opportunities, LP6.3%Oct 17, 25SCHEDULE 13G ↗3 co-filers on this document — the figure is the largest single stake, not their sum.
- Wasatch Advisors LP4.7%Mar 31, 26SCHEDULE 13G/A ↗
- OrbiMed Capital LLC1.0%Dec 31, 25SCHEDULE 13G/A ↗2 co-filers on this document — the figure is the largest single stake, not their sum.
- Point72 Asset Management, L.P.0.2%Mar 31, 26SCHEDULE 13G/A ↗3 co-filers on this document — the figure is the largest single stake, not their sum.
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 Aug 14, Mark Mossler filed notice of intent to sell up to $18K.
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) ↗+3 more recent notices
No purchases or sales are on record in this stretch; only other transactions (compensation, withholding, exercises or gifts).
Stock compensation, tax and giftsshow the 40 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.
- Oct 1, 26Compensation$15KDONNA ROY GROGAN↗
- Oct 1, 26Compensation$11KKenneth Carl Anderson↗
- Sep 18, 26Compensationamount n/aKendra AdamsChief Financial Officer↗
- Sep 18, 26Tax$9KKendra AdamsChief Financial Officer↗
- Jul 10, 26Compensationamount n/aLEONARD REYNOChief Medical Officer↗
- Jul 10, 26Tax$30KLEONARD REYNOChief Medical Officer↗
- Jul 1, 26Compensation$12KKenneth Carl Anderson↗
- Jul 1, 26Compensation$14KDONNA ROY GROGAN↗
- Jun 1, 26Compensation$2KKenneth Carl Anderson↗
- Apr 1, 26Compensation$14KDONNA ROY GROGAN↗
- Apr 1, 26Compensation$11KKenneth Carl Anderson↗
- Feb 15, 26Compensationamount n/aAndrew HirschPresident & CEO↗
- Feb 15, 26Tax$17KAndrew HirschPresident & CEO↗
- Feb 14, 26Compensationamount n/aMark MosslerChief Accounting Officer↗
- Feb 14, 26Tax$6KMark MosslerChief Accounting Officer↗
- Feb 14, 26Compensationamount n/aKendra AdamsChief Financial Officer↗
- Feb 14, 26Tax$29KKendra AdamsChief Financial Officer↗
- Feb 14, 26Compensationamount n/aLEONARD REYNOChief Medical Officer↗
- Feb 14, 26Tax$31KLEONARD REYNOChief Medical Officer↗
- Feb 14, 26Compensationamount n/aAndrew HirschPresident & CEO↗
- Feb 14, 26Tax$74KAndrew HirschPresident & CEO↗
- Feb 14, 26Compensationamount n/aKelly SchickChief People Officer↗
- Feb 14, 26Tax$14KKelly SchickChief People Officer↗
- Feb 14, 26Compensationamount n/aPaige MahaneyChief Scientific Officer↗
- Feb 14, 26Tax$5KPaige MahaneyChief Scientific Officer↗
- Feb 14, 26Compensationamount n/aScott N BoyleChief Business Officer↗
- Feb 14, 26Tax$14KScott N BoyleChief Business Officer↗
- Feb 13, 26Compensationamount n/aMark MosslerChief Accounting Officer↗
- Feb 13, 26Compensationamount n/aKendra AdamsChief Financial Officer↗
- Feb 13, 26Compensationamount n/aKendra AdamsChief Financial Officer↗
- Feb 13, 26Tax$4KKendra AdamsChief Financial Officer↗
- Feb 13, 26Compensationamount n/aLEONARD REYNOChief Medical Officer↗
- Feb 13, 26Compensationamount n/aAndrew HirschPresident & CEO↗
- Feb 13, 26Compensationamount n/aKelly SchickChief People Officer↗
- Feb 13, 26Compensationamount n/aKelly SchickChief People Officer↗
- Feb 13, 26Tax$3KKelly SchickChief People Officer↗
- Feb 13, 26Compensationamount n/aPaige MahaneyChief Scientific Officer↗
- Feb 13, 26Compensationamount n/aScott N BoyleChief Business Officer↗
- Feb 13, 26Compensationamount n/aScott N BoyleChief Business Officer↗
- Feb 13, 26Tax$3KScott N BoyleChief Business Officer↗
The full record holds 176 transactions and goes back to Jan 3, 23.
Its sector and its market
C4 Therapeutics Inc. among Health Care companies
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- 250 clean closes in the period.
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- 518 documents on file, from Sep 2, 2020 to Oct 2, 2026.
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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.
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