英语翻译We placed Regulation S required restrictive legends on a

美国证券交易委员会颁布了S条例,要求所有发行的认购证具有限制性说明.
理解了这个背景,这句话的意思馅儿易见了.（我们）发行商在所有发行的认购证上依法（S条例）附上了限制说明.
S条例是SEC(美国证券交易委员会)杰作.Certificates 是指Security Certificates.S条例管辖的也称为限制股.
"Restricted" Securities:
Removing the Restrictive Legend
"Restricted" securities are securities acquired in an unregistered,private sale from an issuer or from an affiliate of the issuer.They typically bear a legend clearly stating that you may not resell them in the public marketplace unless the sale is exempt from the SEC’s registration requirements.
Rule 144 under the Securities Act of 1933 provides the most commonly used exemption for holders of restricted securities.To take advantage of this rule,you must meet several conditions,including a one-year holding period.
Even if you’ve met all the conditions of Rule 144,you still cannot sell your restricted securities to the public until you’ve had the legend removed from the certificate.Only a transfer agent can remove a restrictive legend.But the transfer agent won’t remove the legend unless the issuer consents—usually in the form of an opinion letter from the issuer’s counsel to the transfer agent.
If you want to remove the restrictive legend,you should contact the company that issued the securities—or the transfer agent for the company’s securities—to ask about the procedures for removing a legend.If you have a broker,you may want to ask your broker to help you.
If a dispute arises about whether a restricted legend can be removed,the SEC will not normally intervene.The removal of a legend is a matter solely in the discretion of the issuer.State law,not federal law,covers disputes about the removal of legends.
If you are considering acquiring restricted securities,it would be wise for you to consult an attorney who specializes in securities law.To learn more about the conditions you would have to meet to publicly sell your restricted securities,read our overview,Rule 144:Selling Restricted and Control Securities.You can also read our publications on the rule and Form 144,which you may need to file with the SEC and others if you sell restricted securities.

我们在所有发行的股票证书上都做了Regulation S要求的限制性标志。