Joseph R Prusz
CIK 1721039 · View on SEC EDGAR ↗
First SEC filing: Nov. 3, 2017 · Latest: Nov. 3, 2017
On this page
- Insider at Companies where this person is a reporting insider.
- Insider transactions Every share this person bought or sold, from Form 4 filings.
- Derivatives Options and other derivative holdings reported by this person.
- Initial holdings The stakes this person held when they first started reporting.
- Compensation Executive pay disclosed in company proxy statements.
Insider at
Insider transactions
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 16, 2021 | MGNI | S | 3,014 | $26.82 | $80,835 | 327,296 Direct | -0.91% | Disposed | -12.4% (price as of 2026-08-20) |
| May 17, 2021 | MGNI | S | 22,248 | $25.98 | $578,003 | 330,310 Direct | -6.31% | Disposed | -9.5% (price as of 2026-08-20) |
| April 12, 2021 | MGNI | S 10b5-1 | 1 | $40.52 | $41 | 352,558 Direct | 0.00% | Disposed | -42.0% (price as of 2026-08-20) |
| April 12, 2021 | MGNI | S 10b5-1 | 57,337 | $39.88 | $2,286,600 | 352,559 Direct | -13.99% | Disposed | -41.1% (price as of 2026-08-20) |
| April 12, 2021 | MGNI | S 10b5-1 | 12,662 | $39.14 | $495,591 | 409,896 Direct | -3.00% | Disposed | -39.9% (price as of 2026-08-20) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| April 1, 2021 | MGNI | Stock Option (right to buy) | Common Stock (17,726) | $42.80 | April 1, 2031 | 17,726 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 4 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Nov. 3, 2017 | MGNI | Common Stock | 91,761 | Direct |
| Nov. 3, 2017 | MGNI | Stock Option (right to buy)→ Common Stock (25,000) | 25,000 | Direct |
| Nov. 3, 2017 | MGNI | Stock Option (right to buy)→ Common Stock (6,500) | 6,500 | Direct |
| Nov. 3, 2017 | MGNI | Stock Option (right to buy)→ Common Stock (18,000) | 18,000 | Direct |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2019 | $325,000 | — | $639,600 | $313,019 | $266,288 | — | $135 | $1,544,042 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.