Sumant Mandal
Insider
First SEC filing: April 1, 2014 · Latest: April 1, 2014
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Feb. 25, 2019 | MGNI | J | 508,938 | · | · | 1,548,980 Indirect | -24.73% | Disposed | (price as of 2026-10-05) |
| Feb. 25, 2019 | MGNI | J | 1,746 | · | · | 44,988 Direct | +4.04% | Acquired | (price as of 2026-10-05) |
| Jan. 28, 2019 | MGNI | J | 508,938 | · | · | 2,057,918 Indirect | -19.83% | Disposed | (price as of 2026-10-05) |
| Jan. 28, 2019 | MGNI | J | 1,746 | · | · | 43,242 Direct | +4.21% | Acquired | (price as of 2026-10-05) |
| Dec. 3, 2018 | MGNI | J | 508,938 | · | · | 2,566,856 Indirect | -16.55% | Disposed | (price as of 2026-10-05) |
| Aug. 15, 2018 | MGNI | A | 7,292 | · | · | 39,750 Direct | +22.47% | Acquired | (price as of 2026-10-05) |
| Aug. 15, 2018 | MGNI | A | 9,429 | · | · | 9,429 Direct | · | Acquired | (price as of 2026-10-05) |
| May 23, 2017 | MGNI | A | 7,292 | · | · | 32,458 Direct | +28.98% | Acquired | (price as of 2026-10-05) |
| May 23, 2017 | MGNI | A | 10,363 | · | · | 10,363 Direct | · | Acquired | (price as of 2026-10-05) |
| May 26, 2016 | MGNI | A | 6,171 | · | · | 25,166 Direct | +32.49% | Acquired | (price as of 2026-10-05) |
| May 26, 2016 | MGNI | A | 12,557 | · | · | 12,557 Direct | · | Acquired | (price as of 2026-10-05) |
| April 7, 2016 | MGNI | J | 1,099 | $19.11 | $21,002 | 18,995 Direct | -5.47% | Disposed | 30.6% (price as of 2026-10-05) |
| March 14, 2016 | MGNI | J | 1,099 | $17.35 | $19,068 | 18,349 Direct | -5.65% | Disposed | 43.9% (price as of 2026-10-05) |
| Feb. 19, 2016 | MGNI | J | 11,283 | · | · | 17,702 Direct | -38.93% | Disposed | (price as of 2026-10-05) |
| Oct. 27, 2015 | MGNI | J | 980 | $16.53 | $16,199 | 28,985 Direct | -3.27% | Disposed | 51.0% (price as of 2026-10-05) |
| July 29, 2015 | MGNI | J | 1,088 | $18.38 | $19,997 | 28,409 Direct | -3.69% | Disposed | 35.8% (price as of 2026-10-05) |
| June 8, 2015 | MGNI | J | 1,360 | $18.54 | $25,214 | 27,769 Direct | -4.67% | Disposed | 34.6% (price as of 2026-10-05) |
| May 27, 2015 | MGNI | J | 1,360 | $17.27 | $23,487 | 26,969 Direct | -4.80% | Disposed | 44.5% (price as of 2026-10-05) |
| May 26, 2015 | MGNI | J | 618,934 | $17.40 | $10,769,452 | 5,744,720 Indirect | -9.73% | Disposed | 43.4% (price as of 2026-10-05) |
| May 13, 2015 | MGNI | A | 11,759 | · | · | 11,759 Direct | · | Acquired | (price as of 2026-10-05) |
| May 13, 2015 | MGNI | A | 4,886 | · | · | 26,169 Direct | +22.96% | Acquired | (price as of 2026-10-05) |
| April 7, 2014 | MGNI | C | 19,562 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-05) |
| April 7, 2014 | MGNI | C | 1,094,310 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-05) |
| April 7, 2014 | MGNI | C | 12,470 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-05) |
| April 7, 2014 | MGNI | C | 697,562 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-05) |
| April 7, 2014 | MGNI | C | 69,580 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-05) |
| April 7, 2014 | MGNI | C | 3,892,410 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-05) |
| April 7, 2014 | MGNI | C | 108,076 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-05) |
| April 7, 2014 | MGNI | C | 6,045,924 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-05) |
| April 7, 2014 | MGNI | J | 13,208 | · | · | 13,208 Direct | · | Acquired | (price as of 2026-10-05) |
| April 7, 2014 | MGNI | J | 13,208 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| April 7, 2014 | MGNI | J | 29,184 | · | · | 29,184 Direct | · | Acquired | (price as of 2026-10-05) |
| April 7, 2014 | MGNI | J | 29,184 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| April 7, 2014 | MGNI | J | 110,640 | · | · | 110,640 Indirect | · | Acquired | (price as of 2026-10-05) |
| April 7, 2014 | MGNI | J | 110,640 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-05) |
| April 7, 2014 | MGNI | J | 6,189,340 | · | · | 6,189,340 Indirect | · | Acquired | (price as of 2026-10-05) |
| April 7, 2014 | MGNI | J | 6,189,340 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-05) |
| April 7, 2014 | MGNI | C | 104,844 | · | · | 110,640 Indirect | +1808.90% | Acquired | (price as of 2026-10-05) |
| April 7, 2014 | MGNI | C | 5,865,103 | · | · | 6,189,340 Indirect | +1808.89% | Acquired | (price as of 2026-10-05) |
| April 7, 2014 | MGNI | J | 21,283 | · | · | 21,283 Direct | · | Acquired | (price as of 2026-10-05) |
| April 7, 2014 | MGNI | J | 21,283 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| April 1, 2014 | MGNI | A | 13,208 | · | · | 13,208 Direct | · | Acquired | (price as of 2026-10-05) |
| April 1, 2014 | MGNI | A | 29,184 | · | · | 29,184 Direct | · | Acquired | (price as of 2026-10-05) |
| April 1, 2014 | MGNI | A | 6,283 | · | · | 21,283 Direct | +41.89% | Acquired | (price as of 2026-10-05) |
| April 1, 2014 | MGNI | A | 15,000 | · | · | 15,000 Direct | · | Acquired | (price as of 2026-10-05) |
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 |
|---|---|---|---|---|---|---|---|
| Aug. 15, 2018 | MGNI | Stock Option (right to buy) | Common Stock | $3.81 | Aug. 15, 2028 | 9,429 | Acquired |
| May 23, 2017 | MGNI | Stock Option (right to buy) | Common Stock | $5.17 | May 23, 2027 | 10,363 | Acquired |
| May 26, 2016 | MGNI | Stock Option (right to buy) | Common Stock | $14.18 | May 26, 2016 | 12,557 | Acquired |
| May 13, 2015 | MGNI | Stock Option (right to buy) | Common Stock | $17.91 | May 13, 2025 | 11,759 | Acquired |
| April 7, 2014 | MGNI | Series D Convertible Preferred Stock | Class A Common Stock | · | · | 19,562 | Disposed |
| April 7, 2014 | MGNI | Series D Convertible Preferred Stock | Class A Common Stock | · | · | 1,094,310 | Disposed |
| April 7, 2014 | MGNI | Series C Convertible Preferred Stock | Class A Common Stock | · | · | 12,470 | Disposed |
| April 7, 2014 | MGNI | Series C Convertible Preferred Stock | Class A Common Stock | · | · | 697,562 | Disposed |
| April 7, 2014 | MGNI | Series B Convertible Preferred Stock | Class A Common Stock | · | · | 69,580 | Disposed |
| April 7, 2014 | MGNI | Series B Convertible Preferred Stock | Class A Common Stock | · | · | 3,892,410 | Disposed |
| April 7, 2014 | MGNI | Series A Convertible Preferred Stock | Class A Common Stock | · | · | 108,076 | Disposed |
| April 7, 2014 | MGNI | Series A Convertible Preferred Stock | Class A Common Stock | · | · | 6,045,924 | Disposed |
| April 7, 2014 | MGNI | Stock Option (Right to Buy) | Class A Common Stock | $15.00 | April 1, 2024 | 13,208 | Acquired |
| April 7, 2014 | MGNI | Stock Option (Right to Buy) | Class A Common Stock | $15.00 | April 1, 2024 | 13,208 | Disposed |
| April 7, 2014 | MGNI | Stock Option (Right to Buy) | Class A Common Stock | $15.00 | April 1, 2024 | 29,184 | Acquired |
| April 7, 2014 | MGNI | Stock Option (Right to Buy) | Class A Common Stock | $15.00 | April 1, 2024 | 29,184 | Disposed |
| April 1, 2014 | MGNI | Stock Option (Right to Buy) | Class A Common Stock | $15.00 | April 1, 2024 | 13,208 | Acquired |
| April 1, 2014 | MGNI | Stock Option (Right to Buy) | Class A Common Stock | $15.00 | April 1, 2024 | 29,184 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 10 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| April 1, 2014 | MGNI | Class A Common Stock [F1] | 324,237 | Indirect |
| April 1, 2014 | MGNI | Class A Common Stock [F1] | 5,796 | Indirect |
| April 1, 2014 | MGNI | Series A Convertible Preferred Stock | 3,022,962 | Indirect |
| April 1, 2014 | MGNI | Series A Convertible Preferred Stock | 54,038 | Indirect |
| April 1, 2014 | MGNI | Series B Convertible Preferred Stock | 1,946,205 | Indirect |
| April 1, 2014 | MGNI | Series B Convertible Preferred Stock | 34,790 | Indirect |
| April 1, 2014 | MGNI | Series C Convertible Preferred Stock | 348,781 | Indirect |
| April 1, 2014 | MGNI | Series C Convertible Preferred Stock | 6,235 | Indirect |
| April 1, 2014 | MGNI | Series D Convertible Preferred Stock | 547,155 | Indirect |
| April 1, 2014 | MGNI | Series D Convertible Preferred Stock | 9,781 | Indirect |