Stockpolly
Search
SOTK · NASDAQ · Industrial - Machinery

Sono-Tek (SOTK)

Builds ultrasonic coating systems from research tools to production equipment.

$5.03
At close+0.08 (+1.62%)
Watchlist

Something off on this page? Send us feedback.

Breakdown13F · 13D/G · Form 4

Institutions28 holders · as of Mar 31, 20268.54%1.34M shares
Insiders10 holders · as of Aug 3, 202620.32%3.19M shares
Strategic holders1 holder · as of Jan 6, 202534.82%5.47M shares
Otherremainder36.32%5.71M shares

15.72M company shares as of Sep 3, 2026 · institutions as of Mar 31, 2026 · holders as of their latest filing

Top shareholders13F · 13D/G · Form 4

HolderStakeSharesEvidence
Emancipation Management LLCStrategic
34.82%5.47M13Gfiled Jan 6, 2025 ↗
V Adah NicklinInsider
5.83%915,59913D/Gfiled Jan 10, 2022 ↗
Richard A BaylesInsider
5.35%840,53613D/Gfiled Feb 7, 2020 ↗
Jeffrey O. SpiegelInsider
5.25%825,14813Dfiled Jan 18, 2022 ↗
Vanguard Capital Management LLCInstitution
2.30%361,25513Fas of Mar 31, 2026
Christopher L. CoccioInsiderdirector
1.86%292,447Form 4filed Jul 23, 2026 ↗
R. Stephen HarshbargerInsiderdirector, officer: CEO
1.69%265,278Form 4filed Jan 28, 2025 ↗
Northwestern Mutual Wealth Management CoInstitution
1.02%160,20213Fas of Mar 31, 2026
Geode Capital Management, LLCInstitution
0.87%136,00713Fas of Mar 31, 2026
Renaissance Technologies LLCInstitution
0.57%89,10013Fas of Mar 31, 2026
M&T Bank CorpInstitution
0.51%80,00013Fas of Mar 31, 2026
Vanguard Fiduciary Trust CoInstitution
0.43%66,80413Fas of Mar 31, 2026
Stifel Financial CorpInstitution
0.38%60,00013Fas of Mar 31, 2026
Bard Associates IncInstitution
0.33%52,45313Fas of Mar 31, 2026
Benin Management CorpInstitution
0.28%44,15713Fas of Mar 31, 2026
Northern Trust CorpInstitution
0.28%43,45913Fas of Mar 31, 2026
Beaumont Financial Advisors, LLCInstitution
0.23%36,67113Fas of Mar 31, 2026
Topline Capital Management, LLCInstitution
0.22%35,15913Fas of Mar 31, 2026
Philip A. StrasburgInsiderdirector
0.18%28,118Form 4filed Jul 24, 2025 ↗
Citadel Advisors LLCInstitution
0.15%23,66313Fas of Mar 31, 2026
Dimensional Fund Advisors LPInstitution
0.14%21,96213Fas of Mar 31, 2026
HM Payson & CoInstitution
0.14%21,50013Fas of Mar 31, 2026
Stephen James BagleyInsiderofficer: CFO
0.14%21,254Form 4filed Aug 3, 2026 ↗
BlackRock, Inc.Institution
0.13%20,45113Fas of Mar 31, 2026
Susquehanna International Group, LLPInstitution
0.12%19,30913Fas of Mar 31, 2026

13F — a manager's quarterly holdings · 13D/13G — an ownership statement filed at 5% or more · Form 4 — an insider's transaction report

Institutions13F, as of Mar 31, 2026

28 holders · 1.34M shares · 6 new positions · 13 increased · 4 reduced · 3 closed

HolderShares% outstandingChg q/qFiled
Vanguard Capital Management LLC361.3K2.30%+361.3KnewMay 15, 2026
Northwestern Mutual Wealth Management Co160.2K1.02%+160.2KnewMay 7, 2026
Geode Capital Management, LLC136.0K0.87%−19.3KMay 15, 2026
Renaissance Technologies LLC89.1K0.57%+26.2KMay 14, 2026
M&T Bank Corp80.0K0.51%0May 12, 2026
Vanguard Fiduciary Trust Co66.8K0.43%+66.8KnewMay 8, 2026
Stifel Financial Corp60.0K0.38%0May 12, 2026
Bard Associates Inc52.5K0.33%+9.2KMay 8, 2026

Ownership statements13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
Emancipation Management LLC34.70%5.47M13GJan 6, 2025 ↗

Insider tradesForm 4

Latest trades

DateInsiderTypeSharesAvg priceOwned after
Jul 30, 2026
Stephen James Bagleyofficer: CFO
Sale8,346$5.1321,254
Jul 27, 2026
Stephen James Bagleyofficer: CFO
Sale1,200$5.0829,600
Jul 23, 2026
Stephen James Bagleyofficer: CFO
Sale3,454$5.4330,800
Jul 21, 2026
Christopher L. Cocciodirector
Sale17,000$5.38292,447
Mar 5, 2026
Adeniyi Lawaldirector
Purchase2,400$4.122,400
Oct 23, 2025
Christopher L. Cocciodirector
Sale12,320$4.78309,447
Oct 21, 2025
Christopher L. Cocciodirector
Sale · 4 lots4,312$4.66321,767

CongressHouse and Senate disclosures

Not reported.