17 CFR § 240.17Ad-20 - Issuer restrictions or prohibitions on ownership by securities intermediaries.

---
identifier: "/us/cfr/t17/s240.17Ad-20"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "17 CFR § 240.17Ad-20 - Issuer restrictions or prohibitions on ownership by securities intermediaries."
title_number: 17
title_name: "Commodity and Securities Exchanges"
section_number: "240.17Ad-20"
section_name: "Issuer restrictions or prohibitions on ownership by securities intermediaries."
chapter_name: "SECURITIES AND EXCHANGE COMMISSION"
part_number: "240"
part_name: "GENERAL RULES AND REGULATIONS, SECURITIES EXCHANGE ACT OF 1934"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "15 U.S.C. 77c, 77d, 77g, 77j, 77s, 77z-2, 77z-3, 77eee, 77ggg, 77nnn, 77sss, 77ttt, 78c, 78c-3, 78c-5, 78d, 78e, 78f, 78g, 78i, 78j, 78j-1, 78j-4, 78k, 78k-1, 78 78m, 78n, 78n-1, 78 78-4, 78-10, 78p, 78q, 78q-1, 78s, 78u-5, 78w, 78x, 78dd, 78 78mm, 80a-20, 80a-23, 80a-29, 80a-37, 80b-3, 80b-4, 80b-11, 1681w(a)(1), 6801-6809, 6825, 7201  and 8302; 7 U.S.C. 2(c)(2)(E); 12 U.S.C. 5221(e)(3); 18 U.S.C. 1350; Pub. L. 111-203, 939A, 124 Stat. 1376 (2010); and Pub. L. 112-106, sec. 503 and 602, 126 Stat. 326 (2012), unless otherwise noted."
cfr_part: "240"
---


# 240.17Ad-20 Issuer restrictions or prohibitions on ownership by securities intermediaries.

(a) Except as provided in paragraph (c) of this section, no registered transfer agent shall transfer any equity security registered pursuant to section 12 or any equity security that subjects an issuer to reporting under section 15(d) of the Act (15 U.S.C. 78*l* or 15 U.S.C. 78o(d)) if such security is subject to any restriction or prohibition on transfer to or from a securities intermediary in its capacity as such.

(b) The term *securities intermediary* means a clearing agency registered under section 17A of the Act (15 U.S.C. 78q-1) or a person, including a bank, broker, or dealer, that in the ordinary course of its business maintains securities accounts for others in its capacity as such.

(c) The provisions of this section shall not apply to any equity security issued by a partnership as defined in rule 901(b) of Regulation S-K (§ 229.901(b) of this chapter).

[69 FR 70862, Dec. 7, 2004]