Michael H Tardugno
CIK 1384550 · View on SEC EDGAR ↗
Insider
First SEC filing: June 9, 2026 · Latest: June 9, 2026
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Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 36 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
36 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| March 14, 2014 | IMNN | P | 4,000 | $3.84 | $15,360 | 57,521 Direct | +7.47% | Acquired | -100.0% (price as of 2026-08-21) |
| Nov. 19, 2013 | IMNN | P | 2,800 | $3.59 | $10,052 | 53,521 Direct | +5.52% | Acquired | -100.0% (price as of 2026-08-21) |
| Aug. 16, 2013 | IMNN | P | 5,000 | $1.08 | $5,400 | 228,285 Direct | +2.24% | Acquired | -100.0% (price as of 2026-08-21) |
| June 12, 2013 | IMNN | P | 10,000 | $1.35 | $13,500 | 223,285 Direct | +4.69% | Acquired | -100.0% (price as of 2026-08-21) |
| Sept. 14, 2012 | IMNN | P | 1,900 | $5.04 | $9,576 | 196,014 Direct | +0.98% | Acquired | -100.0% (price as of 2026-08-21) |
| Sept. 14, 2012 | IMNN | P | 3,100 | $5.03 | $15,593 | 194,114 Direct | +1.62% | Acquired | -100.0% (price as of 2026-08-21) |
| Dec. 5, 2011 | IMNN | P | 1,828 | $2.21 | $4,040 | 166,016 Direct | +1.11% | Acquired | -100.0% (price as of 2026-08-21) |
| Dec. 5, 2011 | IMNN | P | 200 | $2.20 | $440 | 164,188 Direct | +0.12% | Acquired | -100.0% (price as of 2026-08-21) |
| Dec. 5, 2011 | IMNN | P | 2,972 | $2.16 | $6,420 | 163,988 Direct | +1.85% | Acquired | -100.0% (price as of 2026-08-21) |
| May 26, 2011 | IMNN | P | 17,271 | $0.12 | $2,073 | 34,354 Direct | +101.10% | Acquired | -99.9% (price as of 2026-08-21) |
| May 26, 2011 | IMNN | P | 17,271 | $2.77 | $47,841 | 161,016 Direct | +12.02% | Acquired | -100.0% (price as of 2026-08-21) |
| Jan. 14, 2011 | IMNN | P | 17,083 | — | — | 17,083 Direct | — | Acquired | (price as of 2026-08-21) |
| Jan. 14, 2011 | IMNN | P | 41 | $1197.80 | $49,110 | 41 Direct | — | Acquired | -100.0% (price as of 2026-08-21) |
| May 7, 2010 | IMNN | P | 4,000 | $3.95 | $15,800 | 126,662 Direct | +3.26% | Acquired | -100.0% (price as of 2026-08-21) |
| Nov. 19, 2009 | IMNN | P | 6,000 | $3.21 | $19,260 | 71,917 Direct | +9.10% | Acquired | -100.0% (price as of 2026-08-21) |
| Aug. 17, 2009 | IMNN | P | 5,000 | $3.30 | $16,500 | 65,917 Direct | +8.21% | Acquired | -100.0% (price as of 2026-08-21) |
| March 17, 2009 | IMNN | P | 3,750 | $2.56 | $9,600 | 60,917 Direct | +6.56% | Acquired | -100.0% (price as of 2026-08-21) |
| Nov. 14, 2008 | IMNN | P | 3,000 | $2.83 | $8,490 | 32,167 Direct | +10.29% | Acquired | -100.0% (price as of 2026-08-21) |
| June 16, 2008 | IMNN | P | 1,800 | $4.40 | $7,920 | 29,167 Direct | +6.58% | Acquired | -100.0% (price as of 2026-08-21) |
| June 16, 2008 | IMNN | P | 300 | $4.39 | $1,317 | 27,367 Direct | +1.11% | Acquired | -100.0% (price as of 2026-08-21) |
| June 16, 2008 | IMNN | P | 400 | $4.38 | $1,752 | 27,067 Direct | +1.50% | Acquired | -100.0% (price as of 2026-08-21) |
| Feb. 19, 2008 | IMNN | P | 18,750 | $5.50 | $103,125 | 505,000 Direct | +3.86% | Acquired | -100.0% (price as of 2026-08-21) |
| May 17, 2007 | IMNN | P | 600 | $4.82 | $2,892 | 10,000 Direct | +6.38% | Acquired | -100.0% (price as of 2026-08-21) |
| May 17, 2007 | IMNN | P | 1,784 | $4.81 | $8,581 | 9,400 Direct | +23.42% | Acquired | -100.0% (price as of 2026-08-21) |
| Feb. 23, 2007 | IMNN | P | 7,616 | $3.46 | $26,351 | 7,616 Direct | — | Acquired | -100.0% (price as of 2026-08-21) |
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 |
|---|---|---|---|---|---|---|---|
| Feb. 11, 2014 | IMNN | Option to Purchase Celsion Corporation Common Stock | Celsion Corporation Common Stock (100,000) | — | Feb. 11, 2024 | 100,000 | Acquired |
| May 6, 2013 | IMNN | Option to Purchase Celsion Corporation Common Stock | Celsion Corporation Common Stock (200,000) | — | May 6, 2023 | 200,000 | Acquired |
| Dec. 7, 2012 | IMNN | Warrants to purchase Celsion Corporation Common Stock | Celsion Corporation Common Stock | — | Nov. 25, 2017 | 17,271 | Disposed |
| June 15, 2012 | IMNN | Option to purchase Celsion Corporation Common Stock | Celsion Corporation Common Stock (87,000) | $2.15 | June 15, 2022 | 87,000 | Acquired |
| Feb. 22, 2012 | IMNN | Option to purchase Celsion Corporation Common Stock | Celsion Corporation Common Stock (33,000) | $2.06 | Feb. 22, 2022 | 33,000 | Acquired |
| May 26, 2011 | IMNN | Warrants to purchase Common Stock [F1] | Celsion Corporation Common Stock (17,271) | $2.77 | May 26, 2017 | 17,271 | Acquired |
| March 23, 2011 | IMNN | Series A 8% Redeemable Convertible Preferred Stock | Celsion Corporation Common Stock (17,083) | $2.40 | Jan. 23, 2013 | 41 | Disposed |
| Feb. 25, 2011 | IMNN | Option to purchase common stock | Celsion Corporation Common Stock (180,000) | $2.49 | Feb. 25, 2021 | 180,000 | Acquired |
| Jan. 14, 2011 | IMNN | Warrants to Purchase Common Stock [F2] | Celsion Corporation Common Stock (17,083) | — | July 14, 2016 | 17,083 | Acquired |
| Jan. 14, 2011 | IMNN | Series A Redeemable Convertible Preferred Stock [F2] | Celsion Corporation Common Stock (17,083) | — | Jan. 14, 2013 | 41 | Acquired |
| Feb. 19, 2010 | IMNN | Common Stock Option | Celsion Common Stock (85,000) | $2.94 | Feb. 19, 2020 | 85,000 | Acquired |
| Jan. 19, 2010 | IMNN | Common Stock Restricted | Common Stock (16,667) | $0.00 | — | 16,667 | Acquired |
| Jan. 19, 2009 | IMNN | Common Stock Options | Common Stock Options (25,000) | $2.72 | Jan. 19, 2019 | 25,000 | Acquired |
| Jan. 19, 2009 | IMNN | Common Stock Options | Common Stock Options (25,000) | $2.72 | Jan. 19, 2019 | 25,000 | Acquired |
| Jan. 19, 2009 | IMNN | Common Stock Options | Common Stock Options (25,000) | $2.72 | Jan. 19, 2019 | 25,000 | Acquired |
| Feb. 19, 2008 | IMNN | Common Stock Options | Common Stock (18,750) | $5.50 | Feb. 19, 2018 | 18,750 | Acquired |
| Feb. 19, 2008 | IMNN | Common Stock Options | Common Stock (18,750) | $5.50 | Feb. 19, 2018 | 18,750 | Acquired |
| Feb. 19, 2008 | IMNN | Common Stock Options | Common Stock (18,750) | $5.50 | Feb. 19, 2018 | 18,750 | Acquired |
| Feb. 19, 2008 | IMNN | Common Stock Options | common stock (18,750) | $5.50 | Feb. 19, 2018 | 18,750 | Acquired |
| Jan. 19, 2008 | IMNN | Common Stock Restricted | Common Stock (33,333) | $0.00 | — | 33,333 | Disposed |
| Jan. 3, 2007 | IMNN | Restricted Stock | Common Stock (50,000) | $2.42 | Jan. 3, 2010 | 50,000 | Acquired |
| Jan. 3, 2007 | IMNN | Stock Option | Common Stock (430,000) | $2.42 | Jan. 3, 2017 | 430,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
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 |
|---|---|---|---|---|---|---|---|---|
| 2025 | $350,673 | — | — | $34,674 | $210,000 | — | $10,552 | $605,899 |
| 2024 | $336,639 | — | — | $213,072 | $175,000 | — | $10,099 | $734,810 |
| 2017 | $506,609 | — | — | $409,315 | $356,622 | — | $30,000 | $1,302,546 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.