Everbridge, Inc. (EVBG)
EVBG moved a median of 0.00% 30 minutes after news, and 0.00% by the close. How EVBG actually reacts to news — the realized, point-in-time move the market made, measured across 173 labeled events over the last three years with zero look-ahead.
EVBG’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | -0.01% | 37% | 136 |
| 30-min | 0.00% | 47% | 136 |
| 60-min | 0.00% | 43% | 136 |
| to close | 0.00% | 45% | 136 |
| Middle 50% of EVBG reactions | -0.06% to +0.15% |
|---|---|
| Median reaction (30-min) | 0.00% |
| Measured reactions | 173 |
Half of all Everbridge, Inc. news events land between -0.06% and +0.15% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How EVBG reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst downgrades | 10 | -0.04% | 20% | +0.02% |
| Coverage initiations | 19 | +0.04% | 74% | 0.00% |
| Rating reiterations | 14 | +0.01% | 50% | +0.12% |
Last 3 years, pulled 2026-09-21. Reaction = percent move vs. the price at the news timestamp. Counts and medians only. The same measurement runs across every name in the dataset. 3 further classes were observed with fewer than 10 measured events and are not published. See how EVBG ranks against every other measured name →
That’s how EVBG usually reacts — get an email when it moves on news →Email me when EVBG moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to EVBG's baseline. Nothing else.
Recent EVBG events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 15-12G EVERBRIDGE, INC. | SEC filing · Form 15-12G | SEC EDGAR | — | — | |
| Form EFFECT EVERBRIDGE, INC. | SEC filing · Form EFFECT | SEC EDGAR | — | — | |
| Form POSASR EVERBRIDGE, INC. | SEC filing · Form POSASR | SEC EDGAR | — | — | |
| Form 8-K EVERBRIDGE, INC. For: Jul 02 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| Form POS AM EVERBRIDGE, INC. | SEC filing · Form POS | SEC EDGAR | — | — | |
| Form S-8 POS EVERBRIDGE, INC. | SEC filing · Form S-8 | SEC EDGAR | — | — | |
| Form 8-K EVERBRIDGE, INC. For: Jun 25 | SEC filing · Form 8-K | SEC EDGAR | -0.20% | -0.20% | |
| Toronto Zoo Selects Everbridge to Help Safeguard Both Guests and Staff | Press release | Business Wire | +0.00% | -0.09% | |
| Everbridge Appoints Pamela Larson as Chief Security Officer for North America | Press release | Business Wire | +0.00% | +0.03% | |
| Everbridge Announces First Quarter 2024 Financial Results | Press release | Business Wire | -0.01% | -0.06% | |
| Form 10-Q EVERBRIDGE, INC. For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -0.01% | -0.06% | |
| Form 8-K EVERBRIDGE, INC. For: May 09 | SEC filing · Form 8-K | SEC EDGAR | -0.01% | -0.06% | |
| Form 10-K/A EVERBRIDGE, INC. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | -0.06% | +0.26% | |
| Form 8-K EVERBRIDGE, INC. For: Apr 25 | SEC filing · Form 8-K | SEC EDGAR | -0.03% | -0.06% | |
| Form 8-K EVERBRIDGE, INC. For: Apr 12 | SEC filing · Form 8-K | SEC EDGAR | +0.03% | +0.00% | |
| Form DEFA14A EVERBRIDGE, INC. | SEC filing · Form DEFA14A | SEC EDGAR | +0.03% | +0.00% | |
| Boston Athletic Association Utilizes Everbridge Platform for the 128th Running of the Boston Marathon Presented by Bank of America | Press release | Business Wire | +0.03% | +0.09% | |
| SHAREHOLDER INVESTIGATION: Halper Sadeh LLC Investigates NS, EVBG, DOOR, HRT | Press release | PR Newswire | -0.03% | -0.06% | |
| Bronstein, Gewirtz & Grossman, LLC Notifies Shareholders of Everbridge, Inc. (EVBG) Investigation | Press release | Business Wire | -0.09% | -0.17% | |
| Bronstein, Gewirtz & Grossman, LLC Notifies Shareholders of Everbridge, Inc. (EVBG) Investigation | Press release | Accesswire | +0.00% | +0.06% | |
| Bronstein, Gewirtz & Grossman, LLC Notifies Shareholders of Everbridge, Inc. (EVBG) Investigation | Press release | Accesswire | +0.00% | +0.03% | |
| Bronstein, Gewirtz & Grossman, LLC Notifies Shareholders of Everbridge, Inc. (EVBG) Investigation | Press release | Accesswire | +0.02% | -0.09% | |
| Form DEFM14A EVERBRIDGE, INC. | SEC filing · Form DEFM14A | SEC EDGAR | +0.12% | +0.03% | |
| Bronstein, Gewirtz & Grossman, LLC Notifies Shareholders of Everbridge, Inc. (EVBG) Investigation | Press release | Accesswire | +0.00% | -0.03% | |
| Bronstein, Gewirtz & Grossman, LLC Notifies Shareholders of Everbridge, Inc. (EVBG) Investigation | Press release | Accesswire | +0.04% | -0.12% | |
| SHAREHOLDER UPDATE: Halper Sadeh LLC Investigates KAMN, HAYN, EVBG, DOOR | Press release | PR Newswire | +0.12% | +0.06% | |
| SHAREHOLDER UPDATE: Halper Sadeh LLC Investigates CTLT, EVBG, ZFOX | Press release | PR Newswire | +0.01% | +0.00% | |
| Form PREM14A EVERBRIDGE, INC. For: Mar 11 | SEC filing · Form PREM14A | SEC EDGAR | +0.06% | -0.29% | |
| Everbridge Issues New Inducement Grants Under Nasdaq Listing Rule 5635(c)(4) | Press release | Business Wire | +0.20% | -0.26% | |
| Form 8-K EVERBRIDGE, INC. For: Mar 07 | SEC filing · Form 8-K | SEC EDGAR | +0.20% | -0.26% | |
| Everbridge Enters into Amended Merger Agreement with Thoma Bravo | Press release | Business Wire | -1.05% | +0.77% | |
| Form 8-K EVERBRIDGE, INC. For: Feb 29 | SEC filing · Form 8-K | SEC EDGAR | -1.05% | +0.77% | |
| Form DEFA14A EVERBRIDGE, INC. | SEC filing · Form DEFA14A | SEC EDGAR | -1.05% | +0.77% | |
| Thinking about trading options or stock in Tesla, Leidos, Everbridge, Dell Technologies, or NetApp? | Press release | PR Newswire | -0.79% | +0.82% | |
| Form 10-K EVERBRIDGE, INC. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | -0.07% | -0.32% | |
| Form S-8 EVERBRIDGE, INC. | SEC filing · Form S-8 | SEC EDGAR | -0.07% | -0.32% | |
| Everbridge Announces Fourth Quarter and Full Year 2023 Financial Results | Press release | Business Wire | -0.07% | -0.32% | |
| Form 8-K EVERBRIDGE, INC. For: Feb 26 | SEC filing · Form 8-K | SEC EDGAR | -0.07% | -0.32% | |
| Everbridge Cancels Fourth Quarter and Full Year 2023 Financial Results Conference Call | Press release | Business Wire | -0.07% | +0.07% | |
| Form DEFA14A EVERBRIDGE, INC. | SEC filing · Form DEFA14A | SEC EDGAR | -0.04% | -0.04% | |
| SHAREHOLDER UPDATE: Halper Sadeh LLC Investigates DOOR, EVBG, MGRC, SNCE | Press release | PR Newswire | -0.04% | -0.04% | |
| Lifshitz Law PLLC Announces Investigations of EVBG, HAYN, AVRO, and BCAL | Press release | Accesswire | +0.00% | +0.00% | |
| EVBG STOCK ALERT: HALPER SADEH LLC IS INVESTIGATING WHETHER THE SALE OF EVERBRIDGE, INC. IS FAIR TO SHAREHOLDERS | Press release | Accesswire | -0.05% | +0.11% | |
| Thinking about buying stock in Helius Medical Technologies, Peraso, GDS Holdings, Everbridge, or Petros Pharmaceuticals? | Press release | PR Newswire | -0.14% | -0.14% | |
| ALERT: Rowley Law PLLC is Investigating Proposed Acquisition of Everbridge, Inc. | Press release | PR Newswire | -0.21% | -0.21% | |
| EVBG Alert: Monsey Firm of Wohl & Fruchter Investigating Fairness of the Sale of Everbridge to Thoma Bravo | Press release | GlobeNewswire | -0.04% | +0.18% | |
| EVBG Stock Alert: Halper Sadeh LLC is Investigating Whether the Sale of Everbridge, Inc. Is Fair to Shareholders | Press release | Business Wire | -0.04% | +0.18% | |
| Everbridge Enters into Definitive Agreement to Be Acquired by Thoma Bravo for $1.5 Billion | Press release | Business Wire | -0.04% | +0.18% | |
| Form 8-K EVERBRIDGE, INC. For: Feb 04 | SEC filing · Form 8-K | SEC EDGAR | -0.04% | +0.18% | |
| Form DEFA14A EVERBRIDGE, INC. | SEC filing · Form DEFA14A | SEC EDGAR | -0.04% | +0.18% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the EVBG section they belong to.
Where else EVBG is measured.
EVBG earnings → · Analyst actions → · SEC filings →
Other Technology names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| KVH Industries, Inc. (KVHI) | 174 | +0.52% | 59% |
| Activision Blizzard, Inc (ATVI) | 173 | +0.01% | 67% |
| EMCORE Corporation (EMKR) | 172 | 0.00% | 48% |
| Opera Limited - American Depositary Shares (OPRA) | 172 | +0.05% | 50% |
Same sector, same measurement: percent move vs. the price at the news timestamp, read at 30 minutes. Sample sizes differ, so the medians are comparable but the confidence behind them is not.
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Every name we’ve measured, in one place.
How the numbers are made.
How is Everbridge, Inc.'s median reaction calculated?
Every labeled EVBG news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 173 events is what this page reports. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp. 47% of EVBG's measured events are up at 30 minutes; the rest close the window flat or negative.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-09-21.
Does EVBG's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.