ASIC · NYSE · Insurance - Property & Casualty

Ategrity Specialty Insurance

Underwrites E&S coverage for U.S. small-business and middle-market commercial risks.

$26.59
After-hours close+0.05 (+0.19%)
At close$26.54(+0.80%)

Breakdown13F · Form 4

Institutions 12.21%5.86M sharesInsiders 80.75%38.79M sharesOther 7.04%3.38M shares

Shares outstanding 48.03M · Float 7.59M · 15.8% free float

Top shareholders13F · 13D/G · Form 4

HolderShares% outstandingFormFiled
Stuart J. Zimmer · director, 10 percent owner: 38.54M80.23%Form 4Oct 1, 2025
Nuveen, LLC712.1K1.48%13FApr 30, 2026
T. Rowe Price Investment Management, Inc.569.7K1.19%13FMay 15, 2026
BlackRock, Inc.567.0K1.18%13FMay 13, 2026
Cannell Capital LLC486.5K1.01%13FMay 15, 2026

Institutions13F, as of Mar 31, 2026

86 holders · 5.86M shares · 24 new positions · 60 increased · 17 reduced · 16 closed

HolderShares% outstandingChg q/qFiled
Nuveen, LLC712.1K1.48%+7.1KApr 30, 2026
T. Rowe Price Investment Management, Inc.569.7K1.19%+2.0KMay 15, 2026
BlackRock, Inc.567.0K1.18%+118.9KMay 13, 2026
Cannell Capital LLC486.5K1.01%+165.3KMay 15, 2026
Vanguard Capital Management LLC358.3K0.75%+358.3KnewMay 15, 2026
Price T Rowe Associates Inc /MD/274.7K0.57%−13.0KMay 15, 2026
Marshall Wace, LLP200.6K0.42%+100.7KMay 15, 2026
Geode Capital Management, LLC188.2K0.39%+35.0KMay 15, 2026

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

No 13D/G filer at 5% or more on record.

InsidersForm 4

InsiderRoleShares% outstandingFiled
Stuart J. Zimmerdirector, 10 percent owner: 38.54M80.23%Oct 1, 2025
Mitchell Brad Pressmandirector96.3K0.20%Jun 16, 2025
Robert C. Mertondirector48.0K0.10%Jun 15, 2026
Thomas Hulstdirector37.5K0.08%Jun 11, 2025
John Langton Jr. Sennottdirector30.4K0.06%Jun 16, 2026
Neelam Patelofficer: Chief Financial Officer20.0K0.04%Jul 23, 2025
William S. Mercerdirector8.3K0.02%Jun 15, 2026
Justin G. Cohendirector, officer: Chief Executive Officer5.2K0.01%Oct 28, 2025
Chris Schenkofficer: See Remarks2.5K0.01%May 5, 2026
Neil Adlerofficer: Chief Financial Officer1.3K0.00%Jul 20, 2026

Latest trades

DateInsiderTypeSharesAvg priceOwned after
May 4, 2026
Chris Schenkofficer: See Remarks
Purchase2,500$19.992,500
Oct 27, 2025
Justin G. Cohendirector, officer: Chief Executive Officer
Purchase5,200$19.415,200
Sep 29, 2025
Stuart J. Zimmerdirector, 10 percent owner:
Purchase6,130$19.3738,533,541
Sep 30, 2025
Stuart J. Zimmerdirector, 10 percent owner:
Purchase5,000$19.4738,538,541
Sep 25, 2025
Stuart J. Zimmerdirector, 10 percent owner:
Purchase4,179$19.4538,521,670
Sep 26, 2025
Stuart J. Zimmerdirector, 10 percent owner:
Purchase5,741$19.4438,527,411

CongressHouse and Senate disclosures

Not reported.