David O. Harris, age 79, has served as a director of IKONICS Corporation since 1965, accumulating nearly 50 years of institutional knowledge and board service.
Harris is President of David O. Harris, Inc., a manufacturer's representative firm in Minneapolis, Minnesota, and serves on the Company's Audit Committee.
Biography extracted from TeraWulf DEF 14A filed 2014-03-21 View cached copy (2026-09-27)Live source ↗
Roles
Contiguous filings for the same role are collapsed into a single tenure span. Click a row to see the underlying filings.
| Company | Role | Tenure | Filings |
|---|---|---|---|
| TeraWulf | Director | 2004-11 → present (22y) | 25 |
Show 25 underlying filings | |||
Insider transactions
Totals for this person
| Bucket | Invested (shares) | Invested (USD) | Divested (shares) | Divested (USD) | Net direction | Txns | Invested @ last price | Divested @ last price |
|---|---|---|---|---|---|---|---|---|
| All time | 27,159 | $68.1K | 7,450 | $51.4K | ↑ Invested $16.7K | 31 | $318.6K | $87.4K |
| 2016 | - | $0 | 3,150 | $35.5K | ↓ Divested $35.5K | 4 | $0 | $36.9K |
| 2015 | 300 | $3.4K | - | $0 | ↑ Invested $3.4K | 1 | $3.5K | $0 |
| 2014 | 200 | $3.2K | 100 | $0 | ↑ Invested $3.2K | 3 | $2.3K | $1.2K |
| 2015-Q3 | 300 | $3.4K | - | $0 | ↑ Invested $3.4K | 1 | $3.5K | $0 |
| 2016-Q2 | - | $0 | 1,150 | $12.5K | ↓ Divested $12.5K | 1 | $0 | $13.5K |
| 2016-Q3 | - | $0 | 1,000 | $12.4K | ↓ Divested $12.4K | 2 | $0 | $11.7K |
| 2016-Q4 | - | $0 | 1,000 | $10.6K | ↓ Divested $10.6K | 1 | $0 | $11.7K |
Invested = shares acquired (buys, grants, option exercises) — insider adding to the position. Divested = shares reduced (sells, dispositions, tax-withholding) — cash flowing TO the insider. Net direction shows which side wins on dollar terms in each bucket. % of holder's stake not yet computed (pending Form 3/4 holdings ingest). See methodology. The two @ last price columns restate the same share counts at the most recent share price we read (close of 2026-10-30); they are a valuation, not a cash flow, and they move every day the market does.
All transactions
| Date | Company | Kind | Shares | Amount (USD) | Value @ last price |
|---|---|---|---|---|---|
| 2016-11-07 | TeraWulf | Open-market sale | 1,000 | $10,610 | $11.7K |
| 2016-08-10 | TeraWulf | Open-market sale | 900 | $11,128 | $10.6K |
| 2016-08-09 | TeraWulf | Open-market sale | 100 | $1,300 | $1.2K |
| 2016-06-02 | TeraWulf | Open-market sale | 1,150 | $12,478 | $13.5K |
| 2015-08-14 | TeraWulf | Open-market purchase | 300 | $3,423 | $3.5K |
| 2014-11-20 | TeraWulf | Open-market purchase | 200 | $3,198 | $2.3K |
| 2014-10-16 | TeraWulf | Bona fide gift | 50 | - | $586 |
| 2014-03-25 | TeraWulf | Bona fide gift | 50 | - | $586 |
| 2013-02-25 | TeraWulf | Open-market purchase | 400 | $3,860 | $4.7K |
| 2012-12-05 | TeraWulf | Open-market purchase | 300 | $2,460 | $3.5K |
| 2012-11-28 | TeraWulf | Open-market purchase | 100 | $810 | $1.2K |
| 2012-11-13 | TeraWulf | Open-market purchase | 200 | $1,634 | $2.3K |
| 2011-05-03 | TeraWulf | Open-market sale | 1,000 | $7,700 | $11.7K |
| 2010-06-11 | TeraWulf | Open-market purchase | 350 | $2,450 | $4.1K |
| 2010-03-05 | TeraWulf | Open-market purchase | 400 | $2,755 | $4.7K |
| 2009-03-11 | TeraWulf | Open-market purchase | 70 | $315 | $821 |
| 2008-11-21 | TeraWulf | Open-market purchase | 500 | $2,860 | $5.9K |
| 2008-04-28 | TeraWulf | Open-market sale | 1,000 | $8,200 | $11.7K |
| 2008-02-20 | TeraWulf | Option / RSU exercise | 2,175 | $5,800 | $25.5K |
| 2008-02-20 | TeraWulf | Option / RSU exercise · Common Stock Options (right to buy) | 2,175 | - | $25.5K |
Show older transactions (11 more)
| Date | Company | Kind | Shares | Amount (USD) | Value @ last price |
|---|---|---|---|---|---|
| 2007-12-04 | TeraWulf | Bona fide gift | 550 | - | $6.5K |
| 2007-05-29 | TeraWulf | Option / RSU exercise | 2,175 | $4,531 | $25.5K |
| 2007-05-29 | TeraWulf | Option / RSU exercise · Common Stock Options (right to buy) | 2,175 | - | $25.5K |
| 2006-04-17 | TeraWulf | Option / RSU exercise | 3,263 | $10,007 | $38.3K |
| 2006-04-17 | TeraWulf | Option / RSU exercise | 1,980 | $10,800 | $23.2K |
| 2006-04-17 | TeraWulf | Option / RSU exercise · Common Stock Option (right to buy) | 1,980 | - | $23.2K |
| 2006-04-17 | TeraWulf | Option / RSU exercise · Common Stock Option (right to buy) | 3,263 | - | $38.3K |
| 2006-02-23 | TeraWulf | Open-market purchase | 353 | $2,704 | $4.1K |
| 2005-04-21 | TeraWulf | Option / RSU exercise | 2,400 | $10,500 | $28.2K |
| 2005-04-21 | TeraWulf | Option / RSU exercise · Common Stock Option (right to buy) | 2,400 | - | $28.2K |
| 2004-11-16 | TeraWulf | Bona fide gift | 1,650 | - | $19.4K |