ALTO · NASDAQ · Chemicals - Specialty

Alto

Makes specialty alcohols and essential ingredients for health, food, and renewable-fuel markets.

$4.02
After-hours close−0.06 (−1.47%)
At close$4.08(−0.24%)

Breakdown13F · Form 4

Institutions 47.08%36.48M sharesInsiders 4.48%3.47M sharesOther 48.44%37.53M shares

Shares outstanding 77.49M · Float 69.26M · 89.4% free float

Top shareholders13F · 13D/G · Form 4

HolderShares% outstandingFormFiled
BlackRock, Inc.5.36M6.90%13GJul 27, 2026
Vanguard Capital Management LLC3.21M4.15%13FAug 13, 2026
Arrowstreet Capital, Limited Partnership2.28M2.94%13FAug 13, 2026
Acadian Asset Management LLC2.05M2.64%13FAug 13, 2026
Geode Capital Management, LLC1.98M2.56%13FAug 12, 2026

Institutions13F, as of Jun 30, 2026

140 holders · 36.48M shares · 58 new positions · 97 increased · 28 reduced · 24 closed

HolderShares% outstandingChg q/qFiled
BlackRock, Inc.5.50M7.09%+4.20MAug 7, 2026
Vanguard Capital Management LLC3.21M4.15%+32.4KAug 13, 2026
Arrowstreet Capital, Limited Partnership2.28M2.94%+489.9KAug 13, 2026
Acadian Asset Management LLC2.05M2.64%+1.46MAug 13, 2026
Geode Capital Management, LLC1.98M2.56%+1.09MAug 12, 2026
Hillsdale Investment Management Inc.1.70M2.20%+703.0KAug 12, 2026
Renaissance Technologies LLC1.52M1.96%−155.1KAug 13, 2026
State Street Corp1.23M1.59%+857.3KAug 7, 2026

Beneficial owners13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
BlackRock, Inc.6.90%5.36M13GJul 27, 2026

InsidersForm 4

InsiderRoleShares% outstandingFiled
Bryon T. McGregordirector, officer: President & CEO957.9K1.24%Apr 3, 2026
Gilbert E. Nathandirector887.6K1.15%Aug 12, 2026
James R. Sneedofficer: Chief Commercial Officer440.9K0.57%Apr 3, 2026
Robert R. Olanderofficer: Chief Financial Officer253.1K0.33%Apr 3, 2026
Dianne S. Nurydirector241.0K0.31%Jun 25, 2026
Auste M. Grahamofficer: CLO & Secretary233.2K0.30%May 18, 2026
Todd E. Bentonofficer: COO184.1K0.24%Apr 3, 2026
Maria G. Graydirector179.2K0.23%Jun 25, 2026
Alan Robert Tankdirector60.3K0.08%Jun 25, 2026
Jeremy Bezdekdirector36.7K0.05%Jul 11, 2025

9 ten-percent owners hold 4.75M shares by Form 4, outside the officers-and-directors figure above · 10 people have not refiled in the last 18 months (2.67M shares), so they are not in the figure above

Latest trades

DateInsiderTypeSharesAvg priceOwned after
Aug 11, 2026
Gilbert E. Nathandirector
Purchase50,000$4.15856,393
May 12, 2026
Gilbert E. Nathandirector
Purchase20,000$4.61769,741
May 13, 2026
Gilbert E. Nathandirector
Purchase5,000$4.45774,741

CongressHouse and Senate disclosures

Not reported.