Donald E Clarke
CIK 1297831 · View on SEC EDGAR ↗
Insider
First SEC filing: June 8, 2026 · Latest: June 8, 2026
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 26 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
26 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| March 15, 2021 | ALRM | S | 4,846 | $89.06 | $431,585 | 20,304 Direct | -19.27% | Disposed | -35.9% (price as of 2026-08-19) |
| March 15, 2021 | ALRM | S | 8,315 | $88.33 | $734,464 | 25,150 Direct | -24.85% | Disposed | -35.4% (price as of 2026-08-19) |
| Nov. 25, 2020 | ALRM | S | 15,000 | $72.74 | $1,091,100 | 27,465 Direct | -35.32% | Disposed | -21.6% (price as of 2026-08-19) |
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 |
|---|---|---|---|---|---|---|---|
| March 15, 2021 | ALRM | Stock Option (Right to Buy) | Common Stock (6,000) | $11.55 | May 15, 2025 | 6,000 | Disposed |
| Nov. 25, 2020 | ALRM | Stock Option (Right to Buy) | Common Stock (30,000) | $8.08 | April 22, 2024 | 30,000 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 3 holdings
Securities held when first becoming an insider, per SEC Form 3.