Michael Osterer
Insider
First SEC filing: Aug. 16, 2018 · Latest: Jan. 3, 2024
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. 5, 2026 | ACFN | M | 625 | $4.96 | $3,100 | 126,211 Direct | +0.50% | Acquired | 283.5% (price as of 2026-10-02) |
| Feb. 5, 2026 | ACFN | M | 625 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Jan. 19, 2026 | ACFN | A | 3,125 | · | · | 3,125 Direct | · | Acquired | (price as of 2026-10-02) |
| Aug. 4, 2025 | ACFN | M | 1,562 | $5.44 | $8,497 | 125,586 Direct | +1.26% | Acquired | 249.6% (price as of 2026-10-02) |
| Aug. 4, 2025 | ACFN | M | 1,562 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Jan. 1, 2025 | ACFN | A | 625 | · | · | 625 Direct | · | Acquired | (price as of 2026-10-02) |
| Jan. 1, 2024 | ACFN | A | 625 | · | · | 625 Direct | · | Acquired | (price as of 2026-10-02) |
| Jan. 3, 2023 | ACFN | A | 10,000 | · | · | 10,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Jan. 1, 2022 | ACFN | A | 10,000 | · | · | 10,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Jan. 1, 2021 | ACFN | A | 10,000 | · | · | 10,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Jan. 8, 2020 | ACFN | A | 10,000 | · | · | 10,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 5, 2019 | ACFN | A | 10,000 | · | · | 10,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Aug. 6, 2018 | ACFN | A | 25,000 | · | · | 25,000 Direct | · | Acquired | (price as of 2026-10-02) |
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. 5, 2026 | ACFN | stock options [F2] | common stock | $4.96 | Feb. 5, 2026 | 625 | Disposed |
| Jan. 19, 2026 | ACFN | stock options [F1] | common stock | $19.02 | · | 3,125 | Acquired |
| Aug. 4, 2025 | ACFN | Stock options | Common stock | $5.44 | Aug. 6, 2025 | 1,562 | Disposed |
| Jan. 1, 2025 | ACFN | stock options [F1] | common stock | $17.89 | · | 625 | Acquired |
| Jan. 1, 2024 | ACFN | stock options [F1] | common stock | $6.09 | · | 625 | Acquired |
| Jan. 3, 2023 | ACFN | stock options [F1] | common stock | $0.35 | · | 10,000 | Acquired |
| Jan. 1, 2022 | ACFN | stock options [F1] | common stock | $0.63 | · | 10,000 | Acquired |
| Jan. 1, 2021 | ACFN | stock options [F1] | common stock | $0.37 | · | 10,000 | Acquired |
| Jan. 8, 2020 | ACFN | stock options [F1] | common stock | $0.38 | · | 10,000 | Acquired |
| Feb. 5, 2019 | ACFN | stock options [F1] | common stock | $0.31 | · | 10,000 | Acquired |
| Aug. 6, 2018 | ACFN | stock options [F1] | common stock | $0.34 | Aug. 6, 2025 | 25,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 6 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Aug. 16, 2018 | ACFN | common stock | 577,668 | Direct |
| Aug. 16, 2018 | ACFN | common stock | 1,153,479 | Indirect |
| Aug. 16, 2018 | ACFN | common stock | 53,382 | Indirect |
| Aug. 16, 2018 | ACFN | common stock | 3,600 | Indirect |
| Aug. 16, 2018 | ACFN | stock options | 1,500 | Direct |
| Aug. 16, 2018 | ACFN | stock options | 3,750 | Direct |