Jon Gerlach was named Chief Financial Officer, Vice President Finance, and Secretary of IKONICS Corporation in August 2003. Prior to this role, he served as Finance Manager at Sappi Limited in Cloquet and held various positions with Potlatch's Minnesota Pulp and Paper Division from 1994 to 2002, culminating as Division Manager of Business Planning. His earlier career included positions as Financial Analyst with Ernst & Young LLP's audit department and with Maurices Incorporated.
Gerlach holds an MBA from the University of Minnesota—Duluth (2001) and a B.S. in Accounting from St. John's University (1989).
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 | V.P. Finance and CFO | 2003-09 → present (23y 2mo) | 4 |
Show 4 underlying filings | |||
Compensation
| Year | Role as filed | Salary | Incentive | Other | Total | Source |
|---|---|---|---|---|---|---|
| 2018 | — | $158.7K | $0 | $7.9K | $166.6K | View cached copy (2026-09-27)Live source ↗ |
| 2017 | Chief Financial Officer and Vice President—Finance | $158.7K | $0 | $7.9K | $166.6K | View cached copy (2026-09-27)Live source ↗ |
| 2016 | Chief Financial Officer and Vice President—Finance | $154.0K | $0 | $7.7K | $161.7K | View cached copy (2026-09-27)Live source ↗ |
| 2015 | Chief Financial Officer and | $148.0K | $0 | $7.4K | $155.4K | View cached copy (2026-09-27)Live source ↗ |
| 2012 | Chief Financial Officer and Vice President Finance | $131.7K | — | $6.6K | $138.2K | View cached copy (2026-09-27)Live source ↗ |
| 2011 | Chief Financial Officer and Vice President Finance | $127.8K | — | $6.4K | $134.2K | View cached copy (2026-09-27)Live source ↗ |
| 2010 | Chief Financial Officer and Vice President Finance | $121.7K | $5.0K | $6.3K | $133.0K | View cached copy (2026-09-27)Live source ↗ |
| 2009 | Chief Financial Officer and Vice President Finance | $119.5K | $6.0K | — | $125.5K | View cached copy (2026-09-27)Live source ↗ |
As reported in the company's DEF 14A Summary Compensation Table (SEC Reg S-K Item 402(c)). Stock and option awards are grant-date fair values — what the award was worth on the day it was granted, not cash received and not what it is worth now. Every row here reconciles: its columns add up to the total the filing printed.
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 | 32,500 | $37.8K | 21,250 | $338.2K | ↓ Divested $300.4K | 5 | $381.2K | $249.3K |
| 2021 | 10,000 | $0 | 21,250 | $338.2K | ↓ Divested $338.2K | 3 | $117.3K | $249.3K |
| 2008 | 22,500 | $37.8K | - | $0 | ↑ Invested $37.8K | 2 | $263.9K | $0 |
| 2008-Q2 | 22,500 | $37.8K | - | $0 | ↑ Invested $37.8K | 2 | $263.9K | $0 |
| 2021-Q1 | 10,000 | $0 | - | $0 | Flat | 1 | $117.3K | $0 |
| 2021-Q4 | - | $0 | 21,250 | $338.2K | ↓ Divested $338.2K | 2 | $0 | $249.3K |
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 |
|---|---|---|---|---|---|
| 2021-12-13 | TeraWulf | Sale to issuer (buyback) | 10,000 | $338,200 | $117.3K |
| 2021-12-13 | TeraWulf | Sale to issuer (buyback) | 11,250 | - | $132.0K |
| 2021-01-01 | TeraWulf | Grant / award / vesting | 10,000 | - | $117.3K |
| 2008-04-30 | TeraWulf | Option / RSU exercise | 11,250 | $37,800 | $132.0K |
| 2008-04-30 | TeraWulf | Option / RSU exercise · Stock Option (right to buy) | 11,250 | - | $132.0K |
