Form S-1 is an SEC filing used by public companies to register their securities with the U.S. Securities and Exchange Commission (SEC) as the "registration statement by the Securities Act of 1933". The S-1 contains the basic business and financial information on an issuer with respect to a specific securities offering. Investors may use the prospectus to consider the merits of an offering and make educated investment decisions. A prospectus is one of the main documents used by an investor to research a company prior to an initial public offering (IPO). Other less detailed registration forms, such as Form S-3 may be used for certain registrations.

Every business day from 10 to 5, S-1 forms are filed with the SEC's EDGAR filing system, the required filing format of the U.S. Securities and Exchange Commission. However many of these (typically 30% to 90%) are of the related Form S-1/A, which is used for filing amendments to a previously filed Form S-1.

The S-1 form has an OMB Approval Number of 3234-0065 and the online form is only 8 pages. However the simplicity of the form's design is belied by the OMB Office's figure of the Estimated Average Burden - 972.32 hours. This means that long time and effort has been used to collect and display information about the filer (a corporate registrant or new registrant who intends to offer securities). The S-1 form requires that the registrant provide information from diverse sources and incorporate this information using many rules or regulations, such as General Rules and Regulations under the Securities Act, Regulation C, Regulation S-K and Regulation S-X.

S1, S01, S.I, S-1, S.1, Š-1 or S 1 may refer to :

S₁ may refer to :

S01 may refer to :

Steve Pieczenik, MD, PhD (born December 7, 1943, in Havana, Cuba) is an American psychiatrist, former State Department official, author, and publisher.

Pieczenik was born of Russian-Polish parents in Cuba and reared in France. His father, a doctor from Dombrovicz who studied and worked in Toulouse, fled Poland before World War II. His mother, a Russian Jew from Bialystok, fled Europe after many of her family members were killed. The couple met in Portugal, where both had fled ahead of the Nazi invaders. Pieczenik was born in Cuba—out of wedlock in 1943. After living in Toulouse, France for six years, Pieczenik's family migrated to the United States where they settled in the Harlem area of New York City, New York. Steve Pieczenik was eight years old when his parents received their visa to the US.

Pieczenik is a classical pianist who wrote a full-length musical at the age of eight.

Pieczenik is a Harvard-trained psychiatrist and has a doctorate in international relations from MIT.

According to Pieczenik's autobiography, he attended Booker T. Washington High School in the Harlem neighborhood of New York City. Pieczenik received a full scholarship to Cornell University at the age of 16. In 1964, Pieczenik claims he received a B.A. degree in Pre-Medicine and Psychology from Cornell, later attending Cornell University Medical College. In his spare time, he attained a PhD in international relations from MIT while studying at Harvard Medical School. Pieczenik claims to be the first psychiatrist ever to receive a PhD focusing on international relations.