Sono TEK
SOTK on Nasdaq. Market value $107m.
Should I look at this?
We have not checked this company yet
This is not advice.
Who owns it
None of the long-term investors we follow own it. 30 funds in all.
Largest holders overall
- Vanguard Capital Management$2mAdded
- Geode Capital Management$916,191Added
- Renaissance Technologies$703,800Added
- M&T Bank$489,600
- Morgan Stanley$422,121Added
- Vanguard Fiduciary Trust$412,102
- Stifel Financial$367,200
- Bard Associates$349,465Added
- Benin Management$264,121Cut
- Beaumont Financial Advisors$224,427
From 13F filings for the quarter ended 30 June 2026.
Big holders and activists
1 investor owns more than 5%.
- Emancipation Management LLCPassive investorat least 34.7%(filed with 2 related holders)Since 31 December 2024
| Holder | Stake | Since | |
|---|---|---|---|
Emancipation Management LLC Passive investor | at least 34.7% (filed with 2 related holders) | 31 December 2024 |
From Schedule 13D and 13G filings: anyone owning more than 5% must file one.
What insiders did
In the last 12 months, 1 insider bought $9,888 of shares on the open market. 2 sold $238,004, $78,965 of it under preset trading plans.
- Bagley Stephen JamesCFOSold
- Date
- 30 July 2026
- Shares
- 8,346
- Price
- $5.13
- Value
- $42,815
- Bagley Stephen JamesCFOSold
- Date
- 27 July 2026
- Shares
- 1,200
- Price
- $5.08
- Value
- $6,090
- Bagley Stephen JamesCFOSold
- Date
- 23 July 2026
- Shares
- 3,454
- Price
- $5.43
- Value
- $18,759
- COCCIO CHRISTOPHER LDirectorSold
- Date
- 21 July 2026
- Shares
- 17,000
- Price
- $5.38
- Value
- $91,375
- Lawal AdeniyiDirectorBought
- Date
- 5 March 2026
- Shares
- 2,400
- Price
- $4.12
- Value
- $9,888
- COCCIO CHRISTOPHER LDirectorSoldunder a preset trading plan
- Date
- 23 October 2025
- Shares
- 12,320
- Price
- $4.78
- Value
- $58,890
- COCCIO CHRISTOPHER LDirectorSoldunder a preset trading plan
- Date
- 21 October 2025
- Shares
- 4,312
- Price
- $4.66
- Value
- $20,076
| Date | Who | Did | Shares | Price | Value |
|---|---|---|---|---|---|
| 30 July 2026 | Bagley Stephen James CFO | Sold | 8,346 | $5.13 | $42,815 |
| 27 July 2026 | Bagley Stephen James CFO | Sold | 1,200 | $5.08 | $6,090 |
| 23 July 2026 | Bagley Stephen James CFO | Sold | 3,454 | $5.43 | $18,759 |
| 21 July 2026 | COCCIO CHRISTOPHER L Director | Sold | 17,000 | $5.38 | $91,375 |
| 5 March 2026 | Lawal Adeniyi Director | Bought | 2,400 | $4.12 | $9,888 |
| 23 October 2025 | COCCIO CHRISTOPHER L Director | Sold under a preset trading plan | 12,320 | $4.78 | $58,890 |
| 21 October 2025 | COCCIO CHRISTOPHER L Director | Sold under a preset trading plan | 4,312 | $4.66 | $20,076 |
From Form 4 filings: insiders must report trades in their own company's shares within two days.
The deep dive
Everything above is arithmetic on public filings. The deep dive reads the last ten years of annual reports, the proxy statements, and the earnings calls, then argues the case the way Buffett, Klarman, and Hohn would, and checks every claim against the source.
- What the business is worth, as a range, and the margin of safety at today’s price
- Prices to start buying, buy, and buy hard
- The three things that would make this a mistake
- Every number footnoted to the filing it came from
Your first deep dive is free.
Not advice. Numbers on this page come from SEC filings and are updated each night; prices are updated again after the US market closes. The five-year figures are rounded.