The LTI payment requires that Hydro had a positive underlying EBIT in the previous year, and is based partly on return on capital employed achieved in the company and partly on return on capital employed achieved in proportion to a weighted average of return on capital employed achieved by a group of peer companies. The participants will be required to invest the net amount after tax in Hydro shares and such shares must be held for at least three years.

See list in the right-hand column of primary insiders that on April 26, 2018, have acquired Hydro shares under the LTI plan at NOK 54.60 per share. A total of 62,037 shares have been sold by Hydro to the participants in the LTI plan.

Sale of shares to employees

Norsk Hydro employees have purchased shares under a general arrangement offered to employees employed by Norsk Hydro in Norway each year.

All employees employed by Norsk Hydro in Norway have been offered to purchase shares valued at NOK 25,000 with a 50 percent discount. 88 percent of the employees entitled to the offer have subscribed, and have each been allocated 443 shares at NOK 28.20 per share. The total number of shares allocated and transferred under the employee share plan on April 26, 2018 is 1 543,412.

To view primary insiders who have purchased shares under the two abovementioned programs, see the attached in the right-hand column.

Following the transactions under the two abovementioned programs, Norsk Hydro ASA holds 22,695,479 own shares and the total number of outstanding shares are 2,068,998,276.

Cautionary note

Certain statements included in this announcement contain forward-looking information, including, without limitation, information relating to (a) forecasts, projections and estimates, (b) statements of Hydro management concerning plans, objectives and strategies, such as planned expansions, investments, divestments, curtailments or other projects, (c) targeted production volumes and costs, capacities or rates, start-up costs, cost reductions and profit objectives, (d) various expectations about future developments in Hydro's markets, particularly prices, supply and demand and competition, (e) results of operations, (f) margins, (g) growth rates, (h) risk management, and (i) qualified statements such as "expected", "scheduled", "targeted", "planned", "proposed", "intended" or similar.

Although we believe that the expectations reflected in such forward-looking statements are reasonable, these forward-looking statements are based on a number of assumptions and forecasts that, by their nature, involve risk and uncertainty. Various factors could cause our actual results to differ materially

from those projected in a forward-looking statement or affect the extent to which a particular projection is realized. Factors that could cause these differences include, but are not limited to: our continued ability to reposition and restructure our upstream and downstream businesses; changes in availability

and cost of energy and raw materials; global supply and demand for aluminum and aluminum products; world economic growth, including rates of inflation and industrial production; changes in the relative value of currencies and the value of commodity contracts; trends in Hydro's key markets and competition; and legislative, regulatory and political factors.

No assurance can be given that such expectations will prove to have been correct.  Hydro disclaims any obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.