Penbrook Management LLC Data I/O Corp Transaction History

Penbrook Management LLC

$129 Million
Q4 2025

A detailed history of Penbrook Management LLC transactions in Data I/O Corp stock. As of the latest transaction made, Penbrook Management LLC holds 356,850 shares of DAIO stock, worth $970,632. This represents 0.75% of its overall portfolio holdings.

Number of Shares

356,850

Previous 352,750 1.16%

Holding current value

$970,632

Previous $1.18 Million 17.66%

% of portfolio

0.75%

Previous 0.87%

27 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q4 2025 Jan 06, 2026	BUY	$2.72 - $3.39 $11,152 - $13,899	4,100 Added 1.16%	356,850 $970,000
Q3 2025 Oct 22, 2025	BUY	$2.91 - $3.5 $8,730 - $10,500	3,000 Added 0.86%	352,750 $1.18 Million
Q2 2025 Jul 25, 2025	BUY	$1.95 - $3.1 $156,585 - $248,930	80,300 Added 29.8%	349,750 $1.08 Million
Q1 2025 Apr 01, 2025	SELL	$2.4 - $3.12 $4,800 - $6,240	-2,000 Reduced 0.74%	269,450 $676,000
Q3 2024 Oct 15, 2024	SELL	$2.31 - $2.84 $93,786 - $115,304	-40,600 Reduced 13.01%	271,450 $697,000

Q1 2024 Apr 18, 2024	SELL	$2.84 - $3.64 $86,052 - $110,292	-30,300 Reduced 8.85%	312,050 $1.1 Million
Q4 2023 Jan 16, 2024	SELL	$2.87 - $3.85 $5,453 - $7,315	-1,900 Reduced 0.55%	342,350 $1.01 Million
Q3 2023 Oct 10, 2023	SELL	$3.65 - $4.65 $10,950 - $13,950	-3,000 Reduced 0.86%	344,250 $1.31 Million
Q1 2023 Apr 20, 2023	SELL	$3.72 - $4.97 $9,300 - $12,425	-2,500 Reduced 0.71%	347,250 $1.73 Million
Q4 2022 Jan 24, 2023	SELL	$2.65 - $4.29 $2,650 - $4,290	-1,000 Reduced 0.29%	349,750 $0
Q2 2022 Jul 29, 2022	SELL	$3.0 - $4.25 $600 - $850	-200 Reduced 0.06%	350,750 $1.08 Million
Q4 2021 Jan 10, 2022	BUY	$4.34 - $6.56 $8,680 - $13,120	2,000 Added 0.57%	350,950 $1.62 Million
Q3 2021 Oct 26, 2021	SELL	$5.02 - $7.32 $5,020 - $7,320	-1,000 Reduced 0.29%	348,950 $2.28 Million
Q2 2021 Jul 27, 2021	SELL	$5.15 - $7.2 $37,595 - $52,560	-7,300 Reduced 2.04%	349,950 $2.38 Million
Q1 2021 May 05, 2021	BUY	$4.15 - $5.89 $71,546 - $101,543	17,240 Added 5.07%	357,250 $1.94 Million
Q1 2021 Apr 16, 2021	SELL	$4.15 - $5.89 $81,921 - $116,268	-19,740 Reduced 5.49%	340,010 $955,000
Q4 2020 Jan 27, 2021	SELL	$3.05 - $4.75 $15,555 - $24,225	-5,100 Reduced 1.4%	359,750 $1.48 Million
Q3 2020 Oct 23, 2020	BUY	$2.99 - $4.03 $171,147 - $230,677	57,240 Added 18.61%	364,850 $1.16 Million
Q2 2020 Jul 28, 2020	BUY	$2.78 - $3.71 $15,567 - $20,776	5,600 Added 1.85%	307,610 $1.04 Million
Q1 2020 Apr 14, 2020	SELL	$2.51 - $4.46 $14,055 - $24,976	-5,600 Reduced 1.82%	302,010 $849,000
Q4 2019 Jan 16, 2020	BUY	$3.4 - $4.48 $54,400 - $71,680	16,000 Added 5.49%	307,610 $1.31 Million
Q3 2019 Oct 11, 2019	SELL	$3.61 - $4.54 $7,581 - $9,534	-2,100 Reduced 0.71%	291,610 $1.14 Million
Q2 2019 Jul 15, 2019	BUY	$4.14 - $5.63 $2,484 - $3,378	600 Added 0.2%	293,710 $1.32 Million
Q1 2019 Apr 24, 2019	SELL	$5.01 - $6.77 $67,484 - $91,191	-13,470 Reduced 4.39%	293,110 $1.63 Million
Q3 2018 Oct 23, 2018	SELL	$4.99 - $6.62 $80,838 - $107,244	-16,200 Reduced 5.02%	306,580 $1.6 Million
Q1 2018 Apr 27, 2018	SELL	$6.97 - $12.29 $875,153 - $1.54 Million	-125,560 Reduced 28.01%	322,780 $2.4 Million
Q4 2017 Feb 21, 2018	BUY	$8.98 - $15.94 $4.03 Million - $7.15 Million	448,340	448,340 $5.4 Million

Others Institutions Holding DAIO

# of Institutions

Shares Held

3.09M

Call Options Held

Put Options Held

79.5K

View Full List

About DATA I/O CORP

Ticker DAIO
Exchange NASDAQ
Sector Technology
Industry Electronic Components
Shares Outstandng 8,816,200
Market Cap $24M
Description
Data I/O Corporation engages in the design, manufacture, and sale of programming and security deployment systems and services for electronic device manufacturers in the United States, Europe, and internationally. The company's programming system products are used to program integrated circuits (ICs) with the specific data necessary for the ICs. ...

More about DAIO

Track This Portfolio

Portfolio Update

Get notified when there are updates to the investment portfolio of Penbrook Management LLC, based on Form 13F filings with the SEC.

News

Stay updated on Penbrook Management LLC with notifications on news.

Account

Penbrook Management LLC Data I/O Corp Transaction History