SEC v. Texas Gulf Sulphur Co.
E590645
SEC v. Texas Gulf Sulphur Co. is a landmark U.S. securities law case that broadly defined insider trading liability and the disclosure obligations of publicly traded companies under federal law.
All labels observed (1)
| Label | Occurrences |
|---|---|
| SEC v. Texas Gulf Sulphur Co. canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6409123 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: SEC v. Texas Gulf Sulphur Co. Context triple: [Section 10(b) of the Securities Exchange Act of 1934, relatedCaseLaw, SEC v. Texas Gulf Sulphur Co.]
-
A.
Northern Securities Co. v. United States
Northern Securities Co. v. United States was a landmark 1904 U.S. Supreme Court antitrust case that broke up a major railroad holding company and strengthened federal power to regulate monopolies under the Sherman Act.
-
B.
Eisner v. Macomber
Eisner v. Macomber is a 1920 U.S. Supreme Court case that held a pro rata stock dividend was not taxable income under the Sixteenth Amendment, shaping early federal income tax doctrine.
-
C.
United States v. Darby
United States v. Darby is a 1941 U.S. Supreme Court case that upheld federal labor regulations under the Commerce Clause and marked a broad expansion of federal power over economic activity.
-
D.
United States v. Skilling
United States v. Skilling is a landmark U.S. Supreme Court case involving former Enron CEO Jeffrey Skilling that significantly narrowed the scope of the federal “honest services” fraud statute.
-
E.
NLRB v. Jones & Laughlin Steel Corp.
NLRB v. Jones & Laughlin Steel Corp. is a landmark 1937 U.S. Supreme Court decision that upheld federal power to regulate labor relations, marking a major expansion of Congress’s authority over interstate commerce.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: SEC v. Texas Gulf Sulphur Co. Target entity description: SEC v. Texas Gulf Sulphur Co. is a landmark U.S. securities law case that broadly defined insider trading liability and the disclosure obligations of publicly traded companies under federal law.
-
A.
Northern Securities Co. v. United States
Northern Securities Co. v. United States was a landmark 1904 U.S. Supreme Court antitrust case that broke up a major railroad holding company and strengthened federal power to regulate monopolies under the Sherman Act.
-
B.
Eisner v. Macomber
Eisner v. Macomber is a 1920 U.S. Supreme Court case that held a pro rata stock dividend was not taxable income under the Sixteenth Amendment, shaping early federal income tax doctrine.
-
C.
United States v. Darby
United States v. Darby is a 1941 U.S. Supreme Court case that upheld federal labor regulations under the Commerce Clause and marked a broad expansion of federal power over economic activity.
-
D.
United States v. Skilling
United States v. Skilling is a landmark U.S. Supreme Court case involving former Enron CEO Jeffrey Skilling that significantly narrowed the scope of the federal “honest services” fraud statute.
-
E.
NLRB v. Jones & Laughlin Steel Corp.
NLRB v. Jones & Laughlin Steel Corp. is a landmark 1937 U.S. Supreme Court decision that upheld federal power to regulate labor relations, marking a major expansion of Congress’s authority over interstate commerce.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
United States court case
ⓘ
insider trading case ⓘ securities law case ⓘ |
| caseCategory | federal appellate decision ⓘ |
| citation | 401 F.2d 833 ⓘ |
| citationStatus | frequently cited in securities law cases ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| court | United States Court of Appeals for the Second Circuit NERFINISHED ⓘ |
| decisionDate | 1968 ⓘ |
| defendant | Texas Gulf Sulphur Company NERFINISHED ⓘ |
| docketType | civil enforcement action ⓘ |
| fullName | Securities and Exchange Commission v. Texas Gulf Sulphur Co. NERFINISHED ⓘ |
| geographicContext | Second Circuit (New York-based federal appellate court) NERFINISHED ⓘ |
| holding |
Rule 10b-5 applies to anyone in possession of material inside information, not only traditional corporate insiders
ⓘ
corporate press releases must not be materially misleading ⓘ insiders who possess material nonpublic information must either disclose it or abstain from trading ⓘ materiality is judged by whether a reasonable investor would consider the information important ⓘ |
| importance |
foundational precedent on corporate disclosure obligations
ⓘ
influential interpretation of Rule 10b-5 ⓘ landmark case in U.S. insider trading jurisprudence ⓘ |
| jurisdiction | United States federal law ⓘ |
| jurisprudentialImpact |
expanded the class of persons who can be liable for insider trading
ⓘ
influenced later Supreme Court and lower court insider trading decisions ⓘ |
| keyIssue |
interpretation of Rule 10b-5 under the Securities Exchange Act of 1934
ⓘ
scope of insider trading liability under federal securities laws ⓘ timing and adequacy of corporate disclosure of material information ⓘ |
| languageOfProceeding | English ⓘ |
| legalArea |
corporate disclosure
ⓘ
insider trading law ⓘ securities regulation ⓘ |
| legalPrinciple |
duty to avoid trading on material nonpublic information obtained through corporate position
ⓘ
liability for misleading or incomplete corporate public statements ⓘ |
| partyType | publicly traded company as defendant ⓘ |
| plaintiff | Securities and Exchange Commission NERFINISHED ⓘ |
| precedentFor | modern U.S. insider trading enforcement framework ⓘ |
| regulatorInvolved | U.S. Securities and Exchange Commission NERFINISHED ⓘ |
| relatedConcept |
corporate press release liability
ⓘ
material nonpublic information ⓘ reasonable investor standard ⓘ securities fraud under Rule 10b-5 ⓘ |
| ruleInterpreted | SEC Rule 10b-5 NERFINISHED ⓘ |
| standardEstablished |
application of Rule 10b-5 to trading by persons other than traditional insiders
ⓘ
broad interpretation of materiality in securities disclosure ⓘ disclose-or-abstain rule for trading on material nonpublic information ⓘ |
| statuteInterpreted | Securities Exchange Act of 1934 NERFINISHED ⓘ |
| subjectMatter |
public statements and press releases about a major ore discovery in Canada
ⓘ
trading in Texas Gulf Sulphur stock and options based on confidential mineral exploration results ⓘ |
| timePeriod | 1960s ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: SEC v. Texas Gulf Sulphur Co. Description of subject: SEC v. Texas Gulf Sulphur Co. is a landmark U.S. securities law case that broadly defined insider trading liability and the disclosure obligations of publicly traded companies under federal law.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
Section 10(b) of the Securities Exchange Act of 1934
→
relatedCaseLaw
→
SEC v. Texas Gulf Sulphur Co.
ⓘ