SSD · NYSE · Construction Materials

Simpson Manufacturing

Designs and manufactures structural products for wood and concrete construction.

$182.07
After-hours close+0.11 (+0.06%)
At close$181.96(−0.28%)

Breakdown13F · Form 4

Institutions 124.86%Insiders 0.34%

A 13F quarter can total more than the shares outstanding — sub-advisers file the same block twice, and a filer's own share count can be a quarter stale. No split is drawn from it.

Shares outstanding 41.14M · Float 40.98M · 99.6% free float

Top shareholders13F · 13D/G · Form 4

HolderShares% outstandingFormFiled
BlackRock, Inc.4.12M10.01%13FAug 7, 2026
FMR LLC3.67M8.92%13FAug 13, 2026
Kayne Anderson Rudnick Investment Management LLC3.57M8.67%13FAug 13, 2026
Vanguard Portfolio Management LLC1.92M4.68%13FAug 13, 2026
Vanguard Capital Management LLC1.85M4.51%13FAug 13, 2026

Institutions13F, as of Jun 30, 2026

493 holders · 51.36M shares · 77 new positions · 228 increased · 179 reduced · 53 closed

HolderShares% outstandingChg q/qFiled
BlackRock, Inc.4.12M10.01%+86.4KAug 7, 2026
FMR LLC3.67M8.92%+1.02MAug 13, 2026
Kayne Anderson Rudnick Investment Management LLC3.57M8.67%−317.4KAug 13, 2026
Vanguard Portfolio Management LLC1.92M4.68%−2.9KAug 13, 2026
Vanguard Capital Management LLC1.85M4.51%−9.5KAug 13, 2026
State Street Corp1.31M3.18%+37.2KAug 7, 2026
Morgan Stanley1.20M2.92%−96.1KAug 13, 2026
Baker Avenue Asset Management, LP914.5K2.22%−188Jul 28, 2026

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

Holder% of classSharesFormFiled
Kayne Anderson Rudnick Investment Management, LLC9.70%4.02M13GFeb 13, 2026
FMR LLC6.40%2.65M13GMay 6, 2026
Vanguard Capital Management5.29%2.18M13GApr 30, 2026

InsidersForm 4

InsiderRoleShares% outstandingFiled
Michael Oloskydirector, officer: President and CEO54.9K0.13%Feb 18, 2026
Celeste Volz Forddirector14.1K0.03%May 8, 2026
Michael Andersenofficer: EVP, Europe12.4K0.03%Feb 18, 2026
Jeremy Gilstrapofficer: EVP, Innovation10.9K0.03%Feb 18, 2026
Phillip Burtonofficer: EVP, North America9.9K0.02%Feb 18, 2026
Philip E. Donaldsondirector7.0K0.02%May 8, 2026
Udit Mehtaofficer: Chief Technology Officer5.0K0.01%Feb 18, 2026
Kenneth D. Knightdirector4.8K0.01%May 8, 2026
Cassandra Paytonofficer: EVP, General Counsel4.7K0.01%Feb 18, 2026
Matt Dunnofficer: Chief Financial Officer4.7K0.01%Feb 18, 2026

3 ten-percent owners hold 1.02M shares by Form 4, outside the officers-and-directors figure above · 18 people have not refiled in the last 18 months (259.8K shares), so they are not in the figure above

Latest trades

DateInsiderTypeSharesAvg priceOwned after
Aug 4, 2026
James S. Andrasickdirector
Sale800$195.6261
Dec 12, 2025
Philip E. Donaldsondirector
Sale2,375$168.166,086
Nov 11, 2025
James S. Andrasickdirector
Sale600$170.00183

CongressHouse and Senate disclosures

MemberTypeAmountOwnerTradedDisclosed
Rep. Michael McCaul · TX10Sale$1,001 – $15,000SpouseJun 18, 2026Jul 13, 2026