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SCHEDULE 13G Filed 2026-07-17 Event — SEC 0002052113-26-000735 →

BlackRock Portfolio Management LLC → QUANTINUUM INC CLASS A QNT

Stake: — Shares: — CUSIP: 74768A104 Class: Class A Stock

Item 4 — Purpose of Transaction

Not extracted from this filing — typically because it's an amendment (13D/A) and Item 4 is unchanged from the parent filing. Read the raw SEC filing →

Cross-References

Insider Activity (last 365d)
25 transactions
24 buys · 0 sales · 0 awards/exercises
Issuer Cluster
4 13D/G filings on this issuer
3 other filings besides this one
Filer Track Record
60 filings by this filer
59 other filings in the data moat
Short Interest · settle 2026-09-30
DTC 2.38
5,337,210 shares short · +43.7% vs prior

Institutional Consensus · 2026-06-30

Held by elite portfolio managers
1 holder · $25.02M
Viking Global

Form 4 Insider Transactions · last 365d

DateInsiderRoleTypeSharesPriceValue
2026-06-05 Narang Prineha director Buy 200 $60.00 $12K
2026-06-05 JIMENEZ JOSEPH director Buy 66,665 $60.00 $4.00M
2026-06-05 SHARAN NITESH officer Buy 6,500 $60.00 $390K
2026-06-05 Barron Hal director Buy 250,000 $60.00 $15.00M
2026-06-05 Branderiz Eric director Buy 8,334 $60.00 $500K
2026-06-05 Kapur Vimal director Buy 13,000 $60.00 $780K
2026-06-05 Stepniak Michal director Buy 13,333 $60.00 $800K
2026-06-05 Dehoff Kevin Scott officer Buy 15,000 $60.00 $900K
2026-06-05 Daugherty Paul R. director Buy 4,000 $60.00 $240K
2026-06-05 DENMAN KENNETH D director Buy 14,000 $60.00 $840K
2026-06-05 BHATIA MANISH H director Buy 20,000 $60.00 $1.20M
2026-06-04 Narang Prineha director Award 5,833 — —
2026-06-04 JIMENEZ JOSEPH director Award 5,833 — —
2026-06-04 SHARAN NITESH officer Award 44,548 — —
2026-06-04 Barron Hal director Award 5,833 — —
2026-06-04 Branderiz Eric director Award 5,833 — —
2026-06-04 Daugherty Paul R. director Award 5,833 — —
2026-06-04 DENMAN KENNETH D director Award 5,833 — —
2026-06-04 BHATIA MANISH H director Award 5,833 — —
2026-06-04 Hazra Rajeeb director, officer Award 78,333 — —
2026-06-03 SHARAN NITESH officer Award 289,798 — —
2026-06-03 Dehoff Kevin Scott officer Award 111,460 — —
2026-06-03 Hazra Rajeeb director, officer Award 1,042,561 — —
2026-06-03 Hazra Rajeeb director, officer F 336,389 $60.00 $20.18M
2026-06-03 Hazra Rajeeb director, officer Award 122,791 $60.00 $7.37M

Other 13D/G Filings on QUANTINUUM INC CLASS A

FiledFormFilerStakeShares
2026-10-06 SCHEDULE 13G CITADEL ADVISORS LLC — — view →
2026-07-06 SCHEDULE 13G Capital World Investors — — view →
2026-06-22 SCHEDULE 13G Cambridge Quantum Holdings Ltd — — view →

Other Filings by BlackRock Portfolio Management LLC

FiledFormIssuerStakeShares
2026-10-05 SCHEDULE 13G iShares Future AI Beneficiaries ETF — — view →
2026-10-05 SCHEDULE 13G Angi Inc. — — view →
2026-10-05 SCHEDULE 13G iShares MSCI Emerging Markets Small-Cap ETF — — view →
2026-09-08 SCHEDULE 13G Calamos Convertible Opportunities and Income Fund — — view →
2026-09-08 SCHEDULE 13G Calamos Convertible & High Income Fund — — view →
2026-09-08 SCHEDULE 13G Calamos Strategic Total Return Fund — — view →
2026-09-08 SCHEDULE 13G Calamos Global Dynamic Income Fund — — view →
2026-09-08 SCHEDULE 13G Calamos Global Total Return Fund — — view →
2026-09-04 SCHEDULE 13G/A iShares S&P 500 3% Capped ETF — — view →
2026-09-04 SCHEDULE 13G/A ISHARES CURRENCY HEDGED MSCI JAPAN ETF — — view →
2026-09-04 SCHEDULE 13G/A iShares, Inc. — — view →
2026-09-04 SCHEDULE 13G/A iShares, Inc. — — view →
2026-09-04 SCHEDULE 13G/A iShares, Inc. — — view →
2026-09-04 SCHEDULE 13G/A iSHARES TRUST — — view →
2026-09-04 SCHEDULE 13G/A iShares Enhanced Large Cap Core Active ETF — — view →
2026-09-04 SCHEDULE 13G/A iShares Emerging Markets Bond Active ETF — — view →
2026-09-04 SCHEDULE 13G/A ISHARES MSCI NORWAY ETF — — view →
2026-09-04 SCHEDULE 13G/A iShares MSCI Denmark ETF — — view →
2026-09-04 SCHEDULE 13G/A iShares Nasdaq Premium Income Active ETF — — view →
2026-09-04 SCHEDULE 13G/A Galiano Gold Inc. — — view →
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