Originally published at mrnasdog.com/research/arb/inflation by MrNasdog.
Arbitrum mints no ARB at all — all 10B ARB were created at launch and the on-chain total supply is flat at both ends of this window — and ARB still dilutes, because the vesting calendar has not finished. About 278M ARB reached the market over the trailing 90 days and 278M is projected for the next 90, all of it team and early-investor vesting, against a buy side of exactly zero. That puts the MrNasdog Pressure Framework at +4.20% net in both directions, with roughly 3.39B ARB still sitting outside the tradable float. Our supply monitor reads +7.50%, but that 3.30 percentage-point gap is a classification artifact, not new dilution, so a data-conflict flag ships with the page.
The verdict, in one paragraph
For the 90-day window from May 5 2026 to Aug 3 2026, the MrNasdog Pressure Framework reads ARB at +4.20% net: sell pressure of about 278M ARB against buy pressure of zero, on a circulating base of 6.61B ARB. It projects the same +4.20% over the next 90 days — the vesting calendar is flat, not tapering. Our supply monitor reads +7.50% for the same period, a gap of 3.30 percentage points that clears the framework's half-point tolerance, so a monitor-gap flag ships. That gap is a classification difference, not fresh supply: reading the three team-controlled wallets on-chain at both ends of the window shows the DAO treasury, Foundation safe and Foundation vesting lock held about 2.91B ARB on May 5 and 3.01B ARB on Aug 3 — team control actually rose by roughly 99M. The monitor's extra supply is a 230M ARB transfer from the DAO treasury to the Foundation's own operating safe on Jun 28 2026 that it reads as float but that stays insider-held. The label for ARB is a structurally inflationary governance token with a live monthly unlock and no offsetting sink.
Sell pressure: where new ARB comes from
None of it is fresh mint. Arbitrum governance holds the power to mint up to 2% of supply a year, but that lever has never been pulled — the on-chain total supply is still the genesis 10B ARB at both window ends — so Sell #1, protocol inflation, is zero. The mint power has sat unused since it first became available in March 2024, and no proposal to exercise it is live, so this row contributes nothing.
Sell #2 — vesting unlocks — is the entire ledger at about 278M ARB per 90 days. The published schedule releases 92.65M ARB every month on the 16th to early contributors and investors, in the linear phase that follows the one-year cliff and runs until March 2027. Three of those cliffs fall inside every 90-day window — in this one on May 16 2026, Jun 16 2026 and Jul 16 2026, and three more fall inside the next, on Aug 16 2026, Sep 16 2026 and Oct 16 2026 — and they land in dispersed beneficiary wallets rather than a single readable escrow, so the published schedule is the realised read. About 741M ARB of the contributor and investor stock remains to be unlocked, running to the final tranche on Mar 16 2027.
Sell #3 — Foundation and unscheduled unlocks — is zero this window, and the arithmetic behind that zero matters, because a shallower reading would call it large. Measured on-chain at both ends of the window, the consolidated team-controlled balance — DAO treasury, Foundation operating safe and Foundation vesting lock — rose about 99M ARB, from roughly 2.91B to 3.01B. The 230M ARB that left the DAO treasury on Jun 28 2026 went to the Foundation's own operating safe under a continued-funding vote that closed Jun 25 2026, and the treasury simultaneously took roughly 129M ARB back from the wind-down of an ecosystem investment vehicle. Nothing net crossed into the market, so the row stays at zero and the balances are carried as tracked overhangs. Sell #4 — long-term locked or bankruptcy — is zero permanently: no bankruptcy estate, trustee schedule or court-ordered distribution touches ARB.
Buy pressure: where new ARB goes
Every buy row is zero, which is what makes ARB read as one-way — and unlike most tokens that is a structural fact rather than a programme that has lapsed. Buy #1 — programmatic buyback — is zero because the DAO has approved no repurchase, so nothing bids against the monthly unlocks on exchanges. Buy #2 — protocol fee burn — is zero because ARB is not the gas token: every transaction on Arbitrum One is paid for in ETH, network fees accrue to the DAO treasury, and there is no per-block ARB burn the way an EIP-1559 chain removes its own gas token. The identical total-supply reads at both ends of the window are the proof that nothing was burned. Buy #3 — Foundation buy — is zero: no disclosed open-market ARB accumulation, and no wallet shows a position being built from exchanges; the Foundation is funded in ARB by the DAO rather than buying it. Buy #4 — new long-term lock — is zero because native ARB staking is only a preliminarily-approved proposal and is not live, so nothing locked float in the window; if staking goes live and locks supply, it would enter here. With the entire buy ledger empty, the roughly 278M ARB of vesting supply reaches the market unopposed — even though Arbitrum earns real fee revenue, that revenue builds the treasury in ETH and never becomes a bid for the token.
Foundation and overhang
The standing overhang on ARB is large, known, and the reason the monitor and the framework disagree. Of the 10B ARB genesis supply, about 6.61B is circulating (66.1%), leaving roughly 3.39B ARB non-circulating. The DAO treasury timelock (0xF3FC…9B58) holds about 2.56B ARB — more than a third of the entire supply, with no release schedule of any kind; it reaches the market only when a governance vote sends it somewhere. The Foundation's operating safe (0xD6c8…17f6) holds about 325M ARB, a year of authorised operating budget waiting to be spent; a Foundation vesting-budget lock (0x1553…6844) holds about 125M ARB; and roughly 741M ARB of the contributor and investor tranche is still vesting through March 2027, already booked deterministically in Sell #2. During the window, 230M ARB moved from the DAO treasury into the Foundation safe under the continued-funding vote that executed on-chain on Jun 28 2026, and the DAO treasury also took roughly 129M ARB back from an ecosystem-vehicle wind-down — so the consolidated team-controlled balance rose rather than fell. We read these wallets on-chain on every rebuild, so if any of their balances falls between refreshes and the ARB leaves team control, that outflow enters Sell #3 at the next refresh. Today it has not: the overhang is intact and still insider-held.
How ARB compares to other layer-2 governance tokens
The right peer group for ARB is not a hard-capped, halving chain — it is a large genesis allocation still working through a multi-year vesting calendar with a governance treasury attached. Against a halving-model chain with a fixed cap, ARB is the opposite shape: a halving chain's new supply shrinks on a schedule and its float is largely already free, while ARB's new supply is delivered by unlock cliffs and its float is still climbing from two-thirds toward full distribution. The dilution here comes from the vesting calendar, not from block rewards, and it has a defined end date in March 2027.
The sharper comparison is with other layer-two governance tokens that launched with heavy team, investor and DAO allocations — the same low-initial-float pattern followed by years of scheduled unlocks. Against that class ARB is a fairly pure example: a documented monthly cliff, a transparent schedule, and no counter-mechanism. The distinction that matters is the fee model. Some peers route a share of sequencer or protocol revenue back into a token buyback or a burn, so growing usage can offset unlocks; ARB does neither. Arbitrum generates real fees — sequencer revenue, priority-ordering proceeds, and a share of revenue from the layer-3 chains that settle to it — but all of it accrues to the treasury as ETH and stablecoins, and turning any of it into ARB buybacks or fee distributions requires a separate DAO vote that has not passed. So ARB is a governance token whose holders own the treasury but hold no direct claim on the fee revenue the network produces.
The comparison also highlights why ARB's monitor gap is a governance-token phenomenon: a treasury this large means routine internal transfers — DAO to Foundation, lock to safe — repeatedly cross the line that market data providers use to define float, even when no supply reaches an actual seller. A token with little treasury and a mostly-free float, halving or not, simply does not generate a 3-point classification gap. For ARB, watching whether tokens leave insider control entirely matters more than watching the headline circulating number.
What to watch in the next 90 days
First, the monthly vesting cliffs on Aug 16 2026, Sep 16 2026 and Oct 16 2026, each releasing about 92.65M ARB to contributors and investors — the single most predictable supply event, and the reason the next-90-day read stays inflationary. Second, whether the Foundation's operating safe begins spending the 230M ARB it received on Jun 28 2026 into the market, which would turn a currently-excluded internal transfer into real Sell #3 pressure. Third, whether the DAO ever activates its 2% annual inflation power, unused since it became available in March 2024; a first mint would move Sell #1 off zero. Fourth, the native ARB staking proposal, preliminarily approved but not live, which could lock float into Buy #4. Fifth, any first-ever ARB buyback or fee-distribution vote, which would be the first entry in an otherwise empty buy ledger. And on the horizon, the Mar 16 2027 final tranche — the date the vesting row goes permanently to zero.
Summary
The MrNasdog Pressure Framework reads ARB at +4.20% net new supply over the last 90 days and projects +4.20% over the next 90 — inflationary and steady. The mechanism is a published 92.65M ARB monthly vesting unlock to contributors and investors running until March 2027, worth about 278M ARB a window; no new coins are minted, since the 10B total supply is flat on-chain, and the team-controlled treasury net-released nothing this window. Our supply monitor reads +7.50%, a 3.30 percentage-point gap driven by a 230M ARB treasury-to-Foundation transfer the monitor treats as float but that stays insider-held. The key risk is that this dilution has no offset — no buyback and no ARB burn — so vesting supply reaches the market unopposed while fee revenue builds the treasury in ETH. The one thing that could change the picture is a DAO vote to turn some of that revenue into an ARB buyback, which has been discussed but has not happened.
MrNasdog Pressure Framework analysis of Arbitrum (ARB), Metric 1 — Inflation. Data + explanation only. Not financial advice. Updated Aug 4 2026.
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