Sisung Investment Management Services Llc
- Regulatory AUM
- $1.9B
- Discretionary
- $1.9B
- Clients
- 13
- Avg AUM / client
- $149M
- Accounts
- 13
- Employees
- 7
AUM over time
Reported AUM from Form ADV filings, plotted by filing date · as of Mar 19, 2026
Who they serve
| Client type | Clients | AUM | % of AUM |
|---|---|---|---|
| State or municipal government entities | 13 | $1.9B | 100.0% |
People (6)
roster as of Jul 20, 2026| Name | Role / title | Credentials | With firm since | Ownership |
|---|---|---|---|---|
| Lawrence John Sisung | Ceo / Cco | Jul 1995 (31y) | Less than 5% | |
| Richard Louis Solares | Sr. Vp / Coo | Jul 1995 (31y) | Less than 5% | |
| Lawrence John Sisung | Registered representative | May 2011 (15y) | ||
| Robert Lane Sisung | Registered representative | May 2011 (15y) | ||
| Michael Wassner Weinstein | Registered representative | Oct 2012 (14y) | ||
| John Arthur Chapman | Registered representative | Jan 2019 (8y) |
Entity owners (Schedule A/B)
| Entity | Title / status | Since | Sch. | Ownership |
|---|---|---|---|---|
| Sisung Holdings, Llc | Holding Company 100% Owner Of Sims | Jun 2017 | A | 75% or more |
| R. L. Sisung Company | R.L. Sisung Is 51% Beneficial Owner | Jun 2017 | B | ≈ 37.5% – 75% via Sisung Holdings, Llc |
| L. J. Sisung Company | L. J. Sisung Is 49% Beneficial Owner | Jun 2017 | B | ≈ 18.75% – 50% via Sisung Holdings, Llc |
Undisclosed: 0% – 25% of the firm is not attributable from the filed Schedule A bands.
Estimated effective ownership (look-through of filed bands):
- R. L. Sisung Company: 50% – 75% of Sisung Holdings, Llc × 75% – 100% direct ≈ 37.5% – 75% of the firm
- L. J. Sisung Company: 25% – 50% of Sisung Holdings, Llc × 75% – 100% direct ≈ 18.75% – 50% of the firm
Roster from the IAPD representatives feed; ownership and acquisition dates from Form ADV Schedule A/B. "Since" is the earliest filed registration or acquisition date.
Documents (1 archived)
| Form | Period | Size | |
|---|---|---|---|
| Form ADV (full filing) | 03/19/2026 | 1.12 MB | View · PDF · Source ↗ |
Archived copies of the firm's regulatory filings, versioned by content hash.
Disciplinary disclosures
Allegations: NASD ALLEGED VIOLATIONS OF MSRB RULES G-8, G-9, G-17, G-37(B), G-37(C), G-37(D), AND G-37(E). Status: Final Sanction Detail: SSC FINED $10,000 FOR REPORTING RULE G37(E)& SSC AND LARRY J. SISUNG, JR. FINED JOINTLY AND SEVERALLY $10,000 FOR RECORDKEEPING RULES G-8 AND G-9. Summary: BASED ON PRIOR LEGAL ADVICE, AFFILIATES OF THE FIRM SSC MADE LEGAL POLITICAL CONTRIBUTION TO LA STATE OFFICIALS, A SMALL NUMBER OF WHOM SAT ON THE LA BOND COMMISSION (BC). THE BC IS NOT INVOLVED IN HIRING OF MFP'S, BUT BY LA CONSTITUTION REVIEWS ALL LA MUNICIPALITIES' DEBT FOR LEGALITY AND FINANCIAL FEASIBILITY. THE NASD TOOK A POSITION THAT THE CONTRIBUTIONS INVOKED A 2 YEAR BAN ON MUNICIPAL BUSINESS BY SSC FOR ALL LA MUNICIPALITIES. SSC AND LARRY SISUNG OPPOSED THE NASD'S POSITION AND THE SEC DISAGREED WITH THE NASD IN A FINAL ACTION AND FOUND THAT THEIR WAS NO EVIDENCE THAT THE CONTRIBUTIONS ACTUALLY INFLUENCED THE AWARDING OF MUNICIPAL SECURITIES BUSINESS AND THAT THEIR WERE NO VIOLATIONS OF THE PAY TO PLAY PROVISIONS OF RULE G-37(B), (C), OR (D) OR RULE G-17. IN A RELATED MATTER THE SEC HELD THAT SSC DID VIOLATE RECORDKEEPING (G-37(E)) AND REPORTING REQUIREMENT (G-8 & G-9) FOR WHAT THE NASD HEARING PANEL FOUND AS "GOOD FAITH" AND "NON-EGREGIOUS" VIOLATIONS. SSC CONTINUES TO BELIEVE IT COMPLIED WITH THE RULES AS WRITTEN AND WITH REGARDS TO THOSE VIOLATIONS THE SEC RECOGNIZED THE NASD'S FINDING OF THE "ABSENCE OF CULPABLE INTENT, THE ABERRNANT NATURE OF THE FIRM'S MISCONDUCT AND THE FIRM'S REGULATORY COOPERATION TO BE MITIGATIVE."
Disclosure text reproduced verbatim from the firm's own Form ADV filings.
How they charge
- • Percentage of assets under management
Services
- • Portfolio management for individuals/small businesses
- • Portfolio management for businesses/institutional clients
Custody
Firm reports it does not have custody of client funds or securities (Item 9.A).
No custodian data reported or mined yet.
Source
All data on this page comes from this firm's Form ADV filings, reproduced without modification. Latest filing: Mar 19, 2026.
View current Form ADV (SEC/IAPD) ↗