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See how Context works →On the price, the facts of the public record■Insider buy□Insider sell●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.
- Aug 13, 2026Quarterly report · 10-QFiled by the company itself.Open the filing ↗
- Jul 28, 2026Material event · 8-KFiled by the company itself.Open the filing ↗
- May 13, 2026Quarterly report · 10-QFiled by the company itself.Open the filing ↗
In numbers
What this profile holds, counted.
Closes · 1 year250
SEC filings on record7491 flagged finding
Reported transactions (Form 4)79since Feb 1, 2023 · and 3 other holdings
Corporate events (8-K)30since May 18, 2021
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.
Reverse splits in 5 years
1 reverse split in 5 years (1:5 on Dec 31, 2025) · 1:5 cumulative
The other times: of 818 securities that did their first reverse split in 5 years, a year later the median was worth 0.53× the price on the day of the split; 382 lost more than half and 209 rose (809 with a price a year later).
Our own series, not the whole market: based on the splits we have on record (provider and SEC); an unrecorded one does not count. Historical distribution, not a prediction.
The 25 most recent filings (of 749)
Every SEC filing, newest first, with what it is. Below, each type with its own explanation.
- Oct 5, 26SCHEDULE 13G ↗Passive stake · Laurence W. Lytton · 5.2% · event on Sep 29, 26
- Aug 13, 2610-Q ↗Quarterly report
- Jul 28, 268-K ↗Current report · Change in shareholder rights · Bylaws or fiscal year change · Shareholder vote results
- Jun 24, 26DEF 14A ↗Shareholder meeting and votes
- Jun 8, 26PRE 14A ↗Shareholder meeting and votes
- May 13, 2610-Q ↗Quarterly report
- May 12, 268-K/A ↗Current report · A senior executive left or was appointed · amendment
- May 6, 268-K ↗Current report · A senior executive left or was appointed
- May 6, 26Form 3 ↗Insider transaction
- Apr 13, 268-K ↗Current report · Board nominations · Other events
- Mar 31, 2610-K ↗Annual report
- Mar 17, 268-K ↗Current report · Other events
- Mar 2, 26Form 4 ↗Insider transaction
- Feb 27, 268-K ↗Current report · Entered a material agreement
- Feb 27, 26424B4 ↗Securities offering
- Feb 12, 26CORRESP ↗Correspondence with the SEC
- Feb 12, 26CORRESP ↗Correspondence with the SEC
- Feb 12, 26CORRESP ↗Correspondence with the SEC
- Feb 12, 26CORRESP ↗Correspondence with the SEC
- Feb 12, 26S-1/A ↗Securities offering · amendment
- Feb 9, 26CORRESP ↗Correspondence with the SEC
- Feb 9, 26CORRESP ↗Correspondence with the SEC
- Feb 3, 26S-1/A ↗Securities offering · amendment
- Jan 13, 26S-1 ↗Securities offering
- Jan 5, 268-K ↗Current report · Other events
749 filings on record, the oldest from Sep 19, 03.
Listing the 25 most recent filings of the 749 on record.
49967
- May 12, 26A senior executive left or was appointed+1 more in the same filing8-K/A 5.02 ↗
- May 6, 26A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Feb 27, 26Entered a material agreement+2 more in the same filing8-K 1.01 ↗
- Jun 20, 25A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Mar 31, 25Past accounts declared unreliable and being restated+1 more in the same filing8-K 4.02 ↗
- Jun 13, 24A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Mar 4, 24Entered a material agreement+2 more in the same filing8-K 1.01 ↗
- Nov 7, 23A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Oct 16, 23A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Sep 14, 23Auditor change filing (8-K Item 4.01)+1 more in the same filing8-K 4.01 ↗
3 senior executive changes2023show all 3hide
- Jul 6, 23A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- May 30, 23A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Feb 15, 23A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Feb 3, 23Entered a material agreement+1 more in the same filing8-K 1.01 ↗
11 older filings not shown · The record reaches back to Jan 3, 05.
Stress disclosures older than the timeline above. They are individual events from the record, not a complete timeline: there may be more between them.
- Apr 14, 20Past accounts declared unreliable and being restated+1 more in the same filing8-K 4.02 ↗
- Mar 27, 12Past accounts declared unreliable and being restated8-K 4.02 ↗
- Nov 4, 11Past accounts declared unreliable and being restated8-K 4.02 ↗
The full record holds 4 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.
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.
- Laurence W. Lytton5.2%Sep 29, 26SCHEDULE 13G ↗
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.
- Feb 27, 26Buy$750KRichard MacPhersonPresident and CEO↗
Stock compensation, tax and giftsshow the 39 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.
- Dec 12, 25Compensation$290KRichard MacPhersonPresident and CEO↗
- Dec 12, 25Tax$290KRichard MacPhersonPresident and CEO↗
- Dec 12, 25Compensation$145KDavid M Kaye↗
- Dec 12, 25Tax$145KDavid M Kaye↗
- Dec 11, 25Compensation$174KJohn PavlishSenior VP/Chief Tech Officer↗
- Dec 11, 25Tax$174KJohn PavlishSenior VP/Chief Tech Officer↗
- Jun 20, 25Compensation$95KRichard MacPhersonPresident and CEO↗
- Jun 20, 25Tax$95KRichard MacPhersonPresident and CEO↗
- Jun 20, 25Compensation$95KJohn PavlishSenior VP/Chief Tech Officer↗
- Jun 20, 25Tax$95KJohn PavlishSenior VP/Chief Tech Officer↗
- Jun 24, 24Compensation$405KRichard MacPhersonPresident and CEO↗
- Jun 24, 24Tax$405KRichard MacPhersonPresident and CEO↗
- Jun 24, 24Compensation$450KJohn PavlishSenior VP/Chief Tech Officer↗
- Jun 24, 24Tax$450KJohn PavlishSenior VP/Chief Tech Officer↗
- Jun 24, 24Compensation$162KJohn PavlishSenior VP/Chief Tech Officer↗
- Jun 24, 24Tax$162KJohn PavlishSenior VP/Chief Tech Officer↗
- Jan 15, 24Compensationamount n/aTroy J Grant↗
- Dec 11, 23Compensation$3KJohn PavlishSenior VP/Chief Tech Officer↗
- Dec 11, 23Tax$3KJohn PavlishSenior VP/Chief Tech Officer↗
- Dec 11, 23Compensation$2KDavid M Kaye↗
- Dec 11, 23Tax$2KDavid M Kaye↗
- Nov 30, 23Compensation$5KJohn PavlishSenior VP/Chief Tech Officer↗
- Nov 30, 23Tax$5KJohn PavlishSenior VP/Chief Tech Officer↗
- Nov 30, 23Compensation$2KDavid M Kaye↗
- Nov 30, 23Tax$2KDavid M Kaye↗
- Oct 31, 23Compensation$3KRichard MacPhersonPresident and CEO↗
- Oct 31, 23Tax$3KRichard MacPhersonPresident and CEO↗
- Oct 31, 23Compensation$3KJohn PavlishSenior VP/Chief Tech Officer↗
- Oct 31, 23Tax$3KJohn PavlishSenior VP/Chief Tech Officer↗
- Oct 31, 23Compensation$1KDavid M Kaye↗
- Oct 31, 23Tax$1KDavid M Kaye↗
- Sep 29, 23Compensation$2KDavid M Kaye↗
- Sep 29, 23Tax$2KDavid M Kaye↗
- Sep 29, 23Compensation$4KRichard MacPhersonPresident and CEO↗
- Sep 29, 23Tax$4KRichard MacPhersonPresident and CEO↗
- Sep 29, 23Compensation$4KJohn PavlishSenior VP/Chief Tech Officer↗
- Sep 29, 23Tax$4KJohn PavlishSenior VP/Chief Tech Officer↗
- Jul 28, 23Compensation$3KRichard MacPhersonPresident and CEO↗
- Jul 28, 23Tax$3KRichard MacPhersonPresident and CEO↗
The full record holds 64 transactions and goes back to Feb 1, 23.
Its sector and its market
Birchtech Corp. among Industrials companies
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Coverage
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- 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
- 749 documents on file, from Sep 19, 2003 to Oct 5, 2026.
- Company description
- No description available.
- 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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