The Series 4 (Registered Options Principal) exam has 125 scored questions (plus 10 unscored) in 3 hours 15 minutes, with a passing score around 70–72% and a fee of roughly $200. It requires sponsorship plus the SIE and Series 7, and it's the exam that fills the Series 24's biggest gap: supervising options. Expect your Series 7 options knowledge to be assumed, then tested at supervisory depth.
The Series 4 registers you as a Registered Options Principal — the person FINRA holds responsible for a firm's options business with the public. That means approving customer options accounts, reviewing and approving options communications, monitoring trading activity and exercise limits, handling options-related complaints, and supervising the reps doing the selling. Coverage spans equity, index, foreign currency, and interest-rate options.
Its place in the principal-exam map is what confuses people. The Series 24 supervises nearly everything except options and municipals; the Series 9/10 covers options at the sales-supervision level only. The Series 4 is the dedicated options principal qualification — the credential firms need behind their options compliance function, and a common stack on top of the 24 for supervisors at options-active firms.
| Scored questions | 125 (plus 10 unscored pretest) |
| Time limit | 3 hours 15 minutes |
| Format | Multiple choice, closed book |
| Passing score | ~70–72% (confirm on FINRA.org) |
| Fee | ~$200 (confirm current fee) |
| Prerequisites | SIE + Series 7 + firm sponsorship |
| Delivery | Prometric center or online proctored |
FINRA organizes the exam around six supervisory functions covering the lifecycle of an options business: opening and approving customer options accounts (suitability, account documentation, ROP approval duties), supervising sales practices and trading (recommendations, discretionary accounts, exercise and position limits), reviewing communications and correspondence, margin and settlement oversight, handling complaints and violations, and personnel management (registration, training, delegation of supervisory duties).
Beneath the supervisory framing sits a hard technical floor: strategy mechanics and math. Spreads, straddles, combinations, hedges, breakevens, max gain/loss, assignment and exercise mechanics, and the margin treatment of each — because a principal can't review what they can't read. Questions routinely embed a full strategy scenario inside a supervisory question, so a rusty Series 7 options foundation fails the exam even when the supervision rules are memorized.
Among FINRA's principal exams, the Series 4 has a reputation for being deceptively demanding. FINRA doesn't publish a pass rate, but the failure pattern is consistent: candidates study the supervisory rules (the new material) and under-invest in options fluency (the assumed material) — usually because the Series 7 was years ago and the day job hasn't kept strategy math sharp. The exam's other pressure point is precision across lookalike rules: position limits versus exercise limits, which communications need prior principal approval, and the day-counts around account approval and complaint handling.
Plan 50–80 hours over 5–8 weeks, and sequence deliberately: rebuild options strategy fluency first (until reading a spread is automatic again), then layer the supervisory and compliance rules on top. Candidates who reverse that order end up re-learning strategies mid-way and effectively studying twice. Timed full-length practice matters — 135 questions of embedded scenarios over 195 minutes is an endurance format.
The Series 4 combines the two things passive studying fails at: computational fluency (options math) and differentiated recall (dozens of similar supervisory rules). Retrieval practice rebuilds both — producing the breakeven, producing the approval requirement, from a cold start. Spaced repetition keeps the strategy math alive while you cover the rule volume, and immediately re-learning every miss keeps near-identical rules from blurring.
Trelos is built entirely around those techniques. It teaches each concept, drills it the way FINRA words it — strategy math embedded in supervisory scenarios — and schedules your reviews so both layers stick through exam day.
Start the Series 4 on Trelos — freeNo credit card. Feel the retention engine work in your first session.Your firm completes the Registered Options Principal registration and you can formally own options supervision — a requirement FINRA rules place behind any member firm doing public options business. The Series 4 pairs naturally with the Series 24 (general principal authority plus options authority covers most of a firm's supervisory map) and is the logical next step for Series 9/10 branch supervisors moving into firm-level options compliance.